Baculite Mesa, Pierre Shale, Pueblo, CO

Baculite Mesa, Pierre Shale, Pueblo, CO - 5/17/2003
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Close-up of Roger Palmer's sand dollar (from a previous year's trip). This specimen in the process of being described. Rusty Zone or Tepee Zone of Pierre Shale

Close-up of Roger Palmer's sand dollar (from a previous year's trip). This specimen in the process of being described. Rusty Zone or Tepee Zone of Pierre Shale

With a watchful eye, you can easily find many specimens, such as this ammonite, partially exposed in a canyon wall of the Pierre Shale. Rusty Zone or Tepee Zone of Pierre Shale. At GPS waypoint: B03. Collector: Steve Wagner
$Partial ammonite extracted from wall in previous image \nPlacenticeras intercalare (?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner$

Partial ammonite extracted from wall in previous image
Placenticeras intercalare (?)
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner

$Large Inoceramid clam\nRusty Zone or Tepee Zone of Pierre Shale\n(not collected)$

Large Inoceramid clam
Rusty Zone or Tepee Zone of Pierre Shale
(not collected)
$Ammonite \nExiteloceras jenneyi (Whitfield)\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nCollector: Roger Palmer.$

Ammonite
Exiteloceras jenneyi (Whitfield)
Rusty Zone or Tepee Zone of Pierre Shale
Late Cretaceous Period, Approx 74.8 mya.
Collector: Roger Palmer.

In places, the canyon walls are filled with large platter-sized clams like this Inoceramus (?) They are easily identifiable by their thin prism structure. Rusty Zone or Tepee Zone of Pierre Shale.

Some concretions contain crystal structures which formed over millions of years during the fossilization processes. Rusty Zone or Tepee Zone of Pierre Shale.

$Tiny unident. gastropod or scaphopod (?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Susan Passmore.$

Tiny unident. gastropod or scaphopod (?)
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Susan Passmore.
$Unidentified structure.\nRusty Zone or Tepee Zone of Pierre Shale$

Unidentified structure.
Rusty Zone or Tepee Zone of Pierre Shale
$Small bivalve\nInoceramus sp. (strong ribs)\nRusty Zone or Tepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$

Small bivalve
Inoceramus sp. (strong ribs)
Rusty Zone or Tepee Zone of Pierre Shale.
Cretaceous Period, Upper Campanian Stage
Collector: Steve Wagner.
$Ammonite \nPlacenticeras intercalare (?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Larry Bowlds$

Ammonite
Placenticeras intercalare (?)
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Larry Bowlds

$Reverse of ammonite in previous image.\nPlacenticeras intercalare (?)\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: Larry Bowlds.$

Reverse of ammonite in previous image.
Placenticeras intercalare (?)
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Larry Bowlds.
$Baculites scotti (Cobban)\nShowing beautifully preserved sutures.\nBaculites scotti zone of Pierre Shale\nUpper Campanian Stage\nCollector: WIPS member.$

Baculites scotti (Cobban)
Showing beautifully preserved sutures.
Baculites scotti zone of Pierre Shale
Upper Campanian Stage
Collector: WIPS member.
$Ammonite\nDidymocerus sp.\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: WIPS member.$

Ammonite
Didymocerus sp.
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: WIPS member.
$Ammonite curling around in a concretion\nExiteloceras jenneyi (Whitfield) ?\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$

Ammonite curling around in a concretion
Exiteloceras jenneyi (Whitfield) ?
Rusty Zone or Tepee Zone of Pierre Shale
Late Cretaceous Period, Approx 74.8 mya.
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: WIPS member.

$Ammonite curling around in a concretion\nExiteloceras jenneyi (Whitfield) ?\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$

Ammonite curling around in a concretion
Exiteloceras jenneyi (Whitfield) ?
Rusty Zone or Tepee Zone of Pierre Shale
Late Cretaceous Period, Approx 74.8 mya.
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: WIPS member.
$Ammonite curling around in a concretion\n(left side of previous image)\nExiteloceras jenneyi (Whitfield) ?\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$

Ammonite curling around in a concretion
(left side of previous image)
Exiteloceras jenneyi (Whitfield) ?
Rusty Zone or Tepee Zone of Pierre Shale
Late Cretaceous Period, Approx 74.8 mya.
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: WIPS member.
$Ammonite curling around in a concretion\n(right side of previous images)\nExiteloceras jenneyi (Whitfield) ?\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$

Ammonite curling around in a concretion
(right side of previous images)
Exiteloceras jenneyi (Whitfield) ?
Rusty Zone or Tepee Zone of Pierre Shale
Late Cretaceous Period, Approx 74.8 mya.
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: WIPS member.
$Small bivalve\nInoceramus sp. (smooth?)\nCretaceous Period, Upper Campanian Stage\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$

Small bivalve
Inoceramus sp. (smooth?)
Cretaceous Period, Upper Campanian Stage
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: WIPS member.

$Small bivalve\nInoceramus sp. (smooth?)\nCretaceous Period, Upper Campanian Stage\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$

Small bivalve
Inoceramus sp. (smooth?)
Cretaceous Period, Upper Campanian Stage
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: WIPS member.

Most large clams found here are poorly preserved. Rusty Zone or Tepee Zone of Pierre Shale.
$Baculites grandis\nA 26" section of a very large baculite (poorly preserved) found in one of the side canyons \nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner.$

Baculites grandis
A 26" section of a very large baculite (poorly preserved) found in one of the side canyons
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner.
$Large baculite from previous image (center) seen in side canyon near its excavation location (slighly up and to left). Only a small portion of the larger end was initially visible.\nBaculites grandis\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: Steve Wagner.$

Large baculite from previous image (center) seen in side canyon near its excavation location (slighly up and to left). Only a small portion of the larger end was initially visible.
Baculites grandis
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner.

In some places, the Pierre Shale erodes away leaving concretion "bridges" exposed. Rusty Zone or Tepee Zone of Pierre Shale.
$Small bivalve\nInoceramus sp. (strong ribs)\nCretaceous Period, Upper Campanian Stage\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: Steve Wagner.$

Small bivalve
Inoceramus sp. (strong ribs)
Cretaceous Period, Upper Campanian Stage
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner.
$Section of ammonite found in two parts.\nDidymoceras nebrascense? (Meek and Hayden)\nThe ribs of Didymoceras nebrascense are more closely\nspaced than those of Didymoceras stevensoni.\nRusty Zone or Tepee Zone of Pierre Shale.\nUpper Campanian Stage\nCollector: Steve Wagner.$

Section of ammonite found in two parts.
Didymoceras nebrascense? (Meek and Hayden)
The ribs of Didymoceras nebrascense are more closely
spaced than those of Didymoceras stevensoni.
Rusty Zone or Tepee Zone of Pierre Shale.
Upper Campanian Stage
Collector: Steve Wagner.
$Oxybeloceras sp. (?)\nRusty Zone or Tepee Zone of Pierre Shale\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$

Oxybeloceras sp. (?)
Rusty Zone or Tepee Zone of Pierre Shale
Cretaceous Period, Upper Campanian Stage
Collector: Steve Wagner.

$Small bivalve\nInoceramus sp. (strong ribs)\nCretaceous Period, Upper Campanian Stage\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: Steve Wagner.$

Small bivalve
Inoceramus sp. (strong ribs)
Cretaceous Period, Upper Campanian Stage
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner.
$Small bivalve\nInoceramus sp. (strong ribs?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$

Small bivalve
Inoceramus sp. (strong ribs?)
Rusty Zone or Tepee Zone of Pierre Shale.
Cretaceous Period, Upper Campanian Stage
Collector: Steve Wagner.
$Ammonite\nDidymoceras nebrascense? (Meek and Hayden)\nRusty Zone or Tepee Zone of Pierre Shale.\nUpper Campanian Stage\nCollector: Steve Wagner.$

Ammonite
Didymoceras nebrascense? (Meek and Hayden)
Rusty Zone or Tepee Zone of Pierre Shale.
Upper Campanian Stage
Collector: Steve Wagner.
$Baculites sp. \nPoorly preserved, yet ribs help with identification.\nCretaceous Period, Upper Campanian Stage\nBaculites scotti zone of Pierre Shale\nRusty Zone of Pierre Shale.\nCollector: Steve Wagner.$

Baculites sp.
Poorly preserved, yet ribs help with identification.
Cretaceous Period, Upper Campanian Stage
Baculites scotti zone of Pierre Shale
Rusty Zone of Pierre Shale.
Collector: Steve Wagner.

$Small clam\nNymphalucina occidentalis (Morton)?\nTepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$

Small clam
Nymphalucina occidentalis (Morton)?
Tepee Zone of Pierre Shale.
Cretaceous Period, Upper Campanian Stage
Collector: Steve Wagner.
$Medium-sized clam for Baculite Mesa.\nInoceramus sp. (smooth)\nRusty Zone or Tepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$

Medium-sized clam for Baculite Mesa.
Inoceramus sp. (smooth)
Rusty Zone or Tepee Zone of Pierre Shale.
Cretaceous Period, Upper Campanian Stage
Collector: Steve Wagner.
$Section of Ammonite\nDidymocerus nebrascense (?)\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$

Section of Ammonite
Didymocerus nebrascense (?)
Rusty Zone or Tepee Zone of Pierre Shale
Collector: Steve Wagner.
$Partial ammonite\nPlacenticeras intercalare (?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner$

Partial ammonite
Placenticeras intercalare (?)
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner

$Small bivalve\nInoceramus sp.\nRusty Zone or Tepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$

Small bivalve
Inoceramus sp.
Rusty Zone or Tepee Zone of Pierre Shale.
Cretaceous Period, Upper Campanian Stage
Collector: Steve Wagner.
$Baculite (unident.) with interesting branching pattern. The larger piece was found in a tiny 5" wide ravine. The smaller portion was found approximately 25 feet above it in the ravine.\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner.$

Baculite (unident.) with interesting branching pattern. The larger piece was found in a tiny 5" wide ravine. The smaller portion was found approximately 25 feet above it in the ravine.
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner.
$Baculite (unident.) \nPossibly Baculites baculus Meek and Hayden\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$

Baculite (unident.)
Possibly Baculites baculus Meek and Hayden
Rusty Zone or Tepee Zone of Pierre Shale
Collector: Steve Wagner.

Baculite (unident.) showing predation markings where another creature left small trough structures after the baculite died. Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.

$Ammonite.\nDidymoceras nebrascense? (Meek and Hayden)\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$

Ammonite.
Didymoceras nebrascense? (Meek and Hayden)
Rusty Zone or Tepee Zone of Pierre Shale
Collector: Steve Wagner.
$Baculites baculus? (Meek & Hayden) showing predation markings where another creature left small trough structures after the baculite died. \nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner.$

Baculites baculus? (Meek & Hayden) showing predation markings where another creature left small trough structures after the baculite died.
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner.
$Baculites compressus (?)\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$

Baculites compressus (?)
Rusty Zone or Tepee Zone of Pierre Shale
Collector: Steve Wagner.
$Baculites scotti (?)\nNot sure why the section at left is higher than at right, unless it just shifted during the fossilization process or in subsequent movements.\nCretaceaous Period, Middle Campanian\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner.$

Baculites scotti (?)
Not sure why the section at left is higher than at right, unless it just shifted during the fossilization process or in subsequent movements.
Cretaceaous Period, Middle Campanian
Rusty Zone or Tepee Zone of Pierre Shale.
Collector: Steve Wagner.

$Baculites scotti (?)\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$

Baculites scotti (?)
Rusty Zone or Tepee Zone of Pierre Shale
Collector: Steve Wagner.
$EXAMPLE FROM DMNS EXHIBIT:\nAmmonite\nDidymocerus nebrascense\nLate Cretaceous Period, 75 mya.\nFall River County, Nebraska$

EXAMPLE FROM DMNS EXHIBIT:
Ammonite
Didymocerus nebrascense
Late Cretaceous Period, 75 mya.
Fall River County, Nebraska
$EXAMPLE FROM DMNS EXHIBIT:\nAmmonite\nExiteloceras jenneyi\nLate Cretaceous Period, Approx 74.8 mya.\nPueblo County, Colorado$

EXAMPLE FROM DMNS EXHIBIT:
Ammonite
Exiteloceras jenneyi
Late Cretaceous Period, Approx 74.8 mya.
Pueblo County, Colorado
$EXAMPLE FROM DMNS EXHIBIT:\nAmmonite\nDidymocerus cheyennense\nLate Cretaceous Period, 74.3 mya\nPennington County, South Dakota$

EXAMPLE FROM DMNS EXHIBIT:
Ammonite
Didymocerus cheyennense
Late Cretaceous Period, 74.3 mya
Pennington County, South Dakota

$EXAMPLE FROM DMNS EXHIBIT:\nBaculite\nBaculites compressus\nLate Cretaceous Period, 73.4 mya\nMeade County, South Dakota$

EXAMPLE FROM DMNS EXHIBIT:
Baculite
Baculites compressus
Late Cretaceous Period, 73.4 mya
Meade County, South Dakota
$EXAMPLE FROM DMNS EXHIBIT:\nClams & fossil pearls (1 at left)\nInoceramus balchi (left) &\nInoceramus bauabini (right)\nLate Cretaceous Period, 70 mya\nDawson County, Montana$

EXAMPLE FROM DMNS EXHIBIT:
Clams & fossil pearls (1 at left)
Inoceramus balchi (left) &
Inoceramus bauabini (right)
Late Cretaceous Period, 70 mya
Dawson County, Montana
$EXAMPLE FROM DMNS EXHIBIT:\nHeteromorph ammonites\nDidymoceras stevensoni\nLate Cretaceous Period, 75 mya\nWeston County, Wyoming$

EXAMPLE FROM DMNS EXHIBIT:
Heteromorph ammonites
Didymoceras stevensoni
Late Cretaceous Period, 75 mya
Weston County, Wyoming
$EXAMPLE FROM DMNS EXHIBIT:\nHeteromorph ammonites:\nHyphantoceras sp. (left)\nLate Cretaceous Period, 90 mya\nWestfalen, Germany\n---\nDidymoceras sp. (right)\nLate Cretaceous Period, 75 mya\nPueblo County, Colorado$

EXAMPLE FROM DMNS EXHIBIT:
Heteromorph ammonites:
Hyphantoceras sp. (left)
Late Cretaceous Period, 90 mya
Westfalen, Germany
---
Didymoceras sp. (right)
Late Cretaceous Period, 75 mya
Pueblo County, Colorado

Close-up of Roger Palmer's sand dollar (from a previous year's trip). This specimen in the process of being described. Rusty Zone or Tepee Zone of Pierre Shale	Close-up of Roger Palmer's sand dollar (from a previous year's trip). This specimen in the process of being described. Rusty Zone or Tepee Zone of Pierre Shale	With a watchful eye, you can easily find many specimens, such as this ammonite, partially exposed in a canyon wall of the Pierre Shale. Rusty Zone or Tepee Zone of Pierre Shale. At GPS waypoint: B03. Collector: Steve Wagner	$Partial ammonite extracted from wall in previous image \nPlacenticeras intercalare (?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner$ Partial ammonite extracted from wall in previous image Placenticeras intercalare (?) Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner
$Large Inoceramid clam\nRusty Zone or Tepee Zone of Pierre Shale\n(not collected)$ Large Inoceramid clam Rusty Zone or Tepee Zone of Pierre Shale (not collected)	$Ammonite \nExiteloceras jenneyi (Whitfield)\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nCollector: Roger Palmer.$ Ammonite Exiteloceras jenneyi (Whitfield) Rusty Zone or Tepee Zone of Pierre Shale Late Cretaceous Period, Approx 74.8 mya. Collector: Roger Palmer.	In places, the canyon walls are filled with large platter-sized clams like this Inoceramus (?) They are easily identifiable by their thin prism structure. Rusty Zone or Tepee Zone of Pierre Shale.	Some concretions contain crystal structures which formed over millions of years during the fossilization processes. Rusty Zone or Tepee Zone of Pierre Shale.
$Tiny unident. gastropod or scaphopod (?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Susan Passmore.$ Tiny unident. gastropod or scaphopod (?) Rusty Zone or Tepee Zone of Pierre Shale. Collector: Susan Passmore.	$Unidentified structure.\nRusty Zone or Tepee Zone of Pierre Shale$ Unidentified structure. Rusty Zone or Tepee Zone of Pierre Shale	$Small bivalve\nInoceramus sp. (strong ribs)\nRusty Zone or Tepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$ Small bivalve Inoceramus sp. (strong ribs) Rusty Zone or Tepee Zone of Pierre Shale. Cretaceous Period, Upper Campanian Stage Collector: Steve Wagner.	$Ammonite \nPlacenticeras intercalare (?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Larry Bowlds$ Ammonite Placenticeras intercalare (?) Rusty Zone or Tepee Zone of Pierre Shale. Collector: Larry Bowlds
$Reverse of ammonite in previous image.\nPlacenticeras intercalare (?)\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: Larry Bowlds.$ Reverse of ammonite in previous image. Placenticeras intercalare (?) Rusty Zone or Tepee Zone of Pierre Shale. Collector: Larry Bowlds.	$Baculites scotti (Cobban)\nShowing beautifully preserved sutures.\nBaculites scotti zone of Pierre Shale\nUpper Campanian Stage\nCollector: WIPS member.$ Baculites scotti (Cobban) Showing beautifully preserved sutures. Baculites scotti zone of Pierre Shale Upper Campanian Stage Collector: WIPS member.	$Ammonite\nDidymocerus sp.\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: WIPS member.$ Ammonite Didymocerus sp. Rusty Zone or Tepee Zone of Pierre Shale. Collector: WIPS member.	$Ammonite curling around in a concretion\nExiteloceras jenneyi (Whitfield) ?\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$ Ammonite curling around in a concretion Exiteloceras jenneyi (Whitfield) ? Rusty Zone or Tepee Zone of Pierre Shale Late Cretaceous Period, Approx 74.8 mya. Rusty Zone or Tepee Zone of Pierre Shale. Collector: WIPS member.
$Ammonite curling around in a concretion\nExiteloceras jenneyi (Whitfield) ?\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$ Ammonite curling around in a concretion Exiteloceras jenneyi (Whitfield) ? Rusty Zone or Tepee Zone of Pierre Shale Late Cretaceous Period, Approx 74.8 mya. Rusty Zone or Tepee Zone of Pierre Shale. Collector: WIPS member.	$Ammonite curling around in a concretion\n(left side of previous image)\nExiteloceras jenneyi (Whitfield) ?\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$ Ammonite curling around in a concretion (left side of previous image) Exiteloceras jenneyi (Whitfield) ? Rusty Zone or Tepee Zone of Pierre Shale Late Cretaceous Period, Approx 74.8 mya. Rusty Zone or Tepee Zone of Pierre Shale. Collector: WIPS member.	$Ammonite curling around in a concretion\n(right side of previous images)\nExiteloceras jenneyi (Whitfield) ?\nRusty Zone or Tepee Zone of Pierre Shale\nLate Cretaceous Period, Approx 74.8 mya. \nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$ Ammonite curling around in a concretion (right side of previous images) Exiteloceras jenneyi (Whitfield) ? Rusty Zone or Tepee Zone of Pierre Shale Late Cretaceous Period, Approx 74.8 mya. Rusty Zone or Tepee Zone of Pierre Shale. Collector: WIPS member.	$Small bivalve\nInoceramus sp. (smooth?)\nCretaceous Period, Upper Campanian Stage\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$ Small bivalve Inoceramus sp. (smooth?) Cretaceous Period, Upper Campanian Stage Rusty Zone or Tepee Zone of Pierre Shale. Collector: WIPS member.
$Small bivalve\nInoceramus sp. (smooth?)\nCretaceous Period, Upper Campanian Stage\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: WIPS member.$ Small bivalve Inoceramus sp. (smooth?) Cretaceous Period, Upper Campanian Stage Rusty Zone or Tepee Zone of Pierre Shale. Collector: WIPS member.	Most large clams found here are poorly preserved. Rusty Zone or Tepee Zone of Pierre Shale.	$Baculites grandis\nA 26" section of a very large baculite (poorly preserved) found in one of the side canyons \nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner.$ Baculites grandis A 26" section of a very large baculite (poorly preserved) found in one of the side canyons Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.	$Large baculite from previous image (center) seen in side canyon near its excavation location (slighly up and to left). Only a small portion of the larger end was initially visible.\nBaculites grandis\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: Steve Wagner.$ Large baculite from previous image (center) seen in side canyon near its excavation location (slighly up and to left). Only a small portion of the larger end was initially visible. Baculites grandis Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.
In some places, the Pierre Shale erodes away leaving concretion "bridges" exposed. Rusty Zone or Tepee Zone of Pierre Shale.	$Small bivalve\nInoceramus sp. (strong ribs)\nCretaceous Period, Upper Campanian Stage\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: Steve Wagner.$ Small bivalve Inoceramus sp. (strong ribs) Cretaceous Period, Upper Campanian Stage Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.	$Section of ammonite found in two parts.\nDidymoceras nebrascense? (Meek and Hayden)\nThe ribs of Didymoceras nebrascense are more closely\nspaced than those of Didymoceras stevensoni.\nRusty Zone or Tepee Zone of Pierre Shale.\nUpper Campanian Stage\nCollector: Steve Wagner.$ Section of ammonite found in two parts. Didymoceras nebrascense? (Meek and Hayden) The ribs of Didymoceras nebrascense are more closely spaced than those of Didymoceras stevensoni. Rusty Zone or Tepee Zone of Pierre Shale. Upper Campanian Stage Collector: Steve Wagner.	$Oxybeloceras sp. (?)\nRusty Zone or Tepee Zone of Pierre Shale\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$ Oxybeloceras sp. (?) Rusty Zone or Tepee Zone of Pierre Shale Cretaceous Period, Upper Campanian Stage Collector: Steve Wagner.
$Small bivalve\nInoceramus sp. (strong ribs)\nCretaceous Period, Upper Campanian Stage\nRusty Zone or Tepee Zone of Pierre Shale. \nCollector: Steve Wagner.$ Small bivalve Inoceramus sp. (strong ribs) Cretaceous Period, Upper Campanian Stage Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.	$Small bivalve\nInoceramus sp. (strong ribs?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$ Small bivalve Inoceramus sp. (strong ribs?) Rusty Zone or Tepee Zone of Pierre Shale. Cretaceous Period, Upper Campanian Stage Collector: Steve Wagner.	$Ammonite\nDidymoceras nebrascense? (Meek and Hayden)\nRusty Zone or Tepee Zone of Pierre Shale.\nUpper Campanian Stage\nCollector: Steve Wagner.$ Ammonite Didymoceras nebrascense? (Meek and Hayden) Rusty Zone or Tepee Zone of Pierre Shale. Upper Campanian Stage Collector: Steve Wagner.	$Baculites sp. \nPoorly preserved, yet ribs help with identification.\nCretaceous Period, Upper Campanian Stage\nBaculites scotti zone of Pierre Shale\nRusty Zone of Pierre Shale.\nCollector: Steve Wagner.$ Baculites sp. Poorly preserved, yet ribs help with identification. Cretaceous Period, Upper Campanian Stage Baculites scotti zone of Pierre Shale Rusty Zone of Pierre Shale. Collector: Steve Wagner.
$Small clam\nNymphalucina occidentalis (Morton)?\nTepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$ Small clam Nymphalucina occidentalis (Morton)? Tepee Zone of Pierre Shale. Cretaceous Period, Upper Campanian Stage Collector: Steve Wagner.	$Medium-sized clam for Baculite Mesa.\nInoceramus sp. (smooth)\nRusty Zone or Tepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$ Medium-sized clam for Baculite Mesa. Inoceramus sp. (smooth) Rusty Zone or Tepee Zone of Pierre Shale. Cretaceous Period, Upper Campanian Stage Collector: Steve Wagner.	$Section of Ammonite\nDidymocerus nebrascense (?)\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$ Section of Ammonite Didymocerus nebrascense (?) Rusty Zone or Tepee Zone of Pierre Shale Collector: Steve Wagner.	$Partial ammonite\nPlacenticeras intercalare (?)\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner$ Partial ammonite Placenticeras intercalare (?) Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner
$Small bivalve\nInoceramus sp.\nRusty Zone or Tepee Zone of Pierre Shale.\nCretaceous Period, Upper Campanian Stage\nCollector: Steve Wagner.$ Small bivalve Inoceramus sp. Rusty Zone or Tepee Zone of Pierre Shale. Cretaceous Period, Upper Campanian Stage Collector: Steve Wagner.	$Baculite (unident.) with interesting branching pattern. The larger piece was found in a tiny 5" wide ravine. The smaller portion was found approximately 25 feet above it in the ravine.\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner.$ Baculite (unident.) with interesting branching pattern. The larger piece was found in a tiny 5" wide ravine. The smaller portion was found approximately 25 feet above it in the ravine. Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.	$Baculite (unident.) \nPossibly Baculites baculus Meek and Hayden\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$ Baculite (unident.) Possibly Baculites baculus Meek and Hayden Rusty Zone or Tepee Zone of Pierre Shale Collector: Steve Wagner.	Baculite (unident.) showing predation markings where another creature left small trough structures after the baculite died. Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.
$Ammonite.\nDidymoceras nebrascense? (Meek and Hayden)\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$ Ammonite. Didymoceras nebrascense? (Meek and Hayden) Rusty Zone or Tepee Zone of Pierre Shale Collector: Steve Wagner.	$Baculites baculus? (Meek & Hayden) showing predation markings where another creature left small trough structures after the baculite died. \nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner.$ Baculites baculus? (Meek & Hayden) showing predation markings where another creature left small trough structures after the baculite died. Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.	$Baculites compressus (?)\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$ Baculites compressus (?) Rusty Zone or Tepee Zone of Pierre Shale Collector: Steve Wagner.	$Baculites scotti (?)\nNot sure why the section at left is higher than at right, unless it just shifted during the fossilization process or in subsequent movements.\nCretaceaous Period, Middle Campanian\nRusty Zone or Tepee Zone of Pierre Shale.\nCollector: Steve Wagner.$ Baculites scotti (?) Not sure why the section at left is higher than at right, unless it just shifted during the fossilization process or in subsequent movements. Cretaceaous Period, Middle Campanian Rusty Zone or Tepee Zone of Pierre Shale. Collector: Steve Wagner.
$Baculites scotti (?)\nRusty Zone or Tepee Zone of Pierre Shale\nCollector: Steve Wagner.$ Baculites scotti (?) Rusty Zone or Tepee Zone of Pierre Shale Collector: Steve Wagner.	$EXAMPLE FROM DMNS EXHIBIT:\nAmmonite\nDidymocerus nebrascense\nLate Cretaceous Period, 75 mya.\nFall River County, Nebraska$ EXAMPLE FROM DMNS EXHIBIT: Ammonite Didymocerus nebrascense Late Cretaceous Period, 75 mya. Fall River County, Nebraska	$EXAMPLE FROM DMNS EXHIBIT:\nAmmonite\nExiteloceras jenneyi\nLate Cretaceous Period, Approx 74.8 mya.\nPueblo County, Colorado$ EXAMPLE FROM DMNS EXHIBIT: Ammonite Exiteloceras jenneyi Late Cretaceous Period, Approx 74.8 mya. Pueblo County, Colorado	$EXAMPLE FROM DMNS EXHIBIT:\nAmmonite\nDidymocerus cheyennense\nLate Cretaceous Period, 74.3 mya\nPennington County, South Dakota$ EXAMPLE FROM DMNS EXHIBIT: Ammonite Didymocerus cheyennense Late Cretaceous Period, 74.3 mya Pennington County, South Dakota
$EXAMPLE FROM DMNS EXHIBIT:\nBaculite\nBaculites compressus\nLate Cretaceous Period, 73.4 mya\nMeade County, South Dakota$ EXAMPLE FROM DMNS EXHIBIT: Baculite Baculites compressus Late Cretaceous Period, 73.4 mya Meade County, South Dakota	$EXAMPLE FROM DMNS EXHIBIT:\nClams & fossil pearls (1 at left)\nInoceramus balchi (left) &\nInoceramus bauabini (right)\nLate Cretaceous Period, 70 mya\nDawson County, Montana$ EXAMPLE FROM DMNS EXHIBIT: Clams & fossil pearls (1 at left) Inoceramus balchi (left) & Inoceramus bauabini (right) Late Cretaceous Period, 70 mya Dawson County, Montana	$EXAMPLE FROM DMNS EXHIBIT:\nHeteromorph ammonites\nDidymoceras stevensoni\nLate Cretaceous Period, 75 mya\nWeston County, Wyoming$ EXAMPLE FROM DMNS EXHIBIT: Heteromorph ammonites Didymoceras stevensoni Late Cretaceous Period, 75 mya Weston County, Wyoming	$EXAMPLE FROM DMNS EXHIBIT:\nHeteromorph ammonites:\nHyphantoceras sp. (left)\nLate Cretaceous Period, 90 mya\nWestfalen, Germany\n---\nDidymoceras sp. (right)\nLate Cretaceous Period, 75 mya\nPueblo County, Colorado$ EXAMPLE FROM DMNS EXHIBIT: Heteromorph ammonites: Hyphantoceras sp. (left) Late Cretaceous Period, 90 mya Westfalen, Germany --- Didymoceras sp. (right) Late Cretaceous Period, 75 mya Pueblo County, Colorado