Marine Invertebrate Fossils of Pierre Shale, Kremmling, CO
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Ammonite\n(Placenticeras?)\nCollector: Tom Nelson

Ammonite
(Placenticeras?)
Collector: Tom Nelson

Gastropods\nCollector: Gail Nelson

Gastropods
Collector: Gail Nelson

Ammonite, male\nJeletzkytes nodosus

Ammonite, male
Jeletzkytes nodosus

Reverse\nAmmonite, male\nJeletzkytes nodosus

Reverse
Ammonite, male
Jeletzkytes nodosus

Ammonite\nJeletzkytes nodosus

Ammonite
Jeletzkytes nodosus

Ammonite\nJeletzkytes nodosus\nAnother view of previous specimen

Ammonite
Jeletzkytes nodosus
Another view of previous specimen

Ammonite\nHoploscaphites sp. (?)

Ammonite
Hoploscaphites sp. (?)

Ammonite\nHoploscaphites sp. (?)

Ammonite
Hoploscaphites sp. (?)

Unidentified ammonite

Unidentified ammonite

Ammonite\nPlacenticeras costatum

Ammonite
Placenticeras costatum

Reverse\nAmmonite\nPlacenticeras costatum

Reverse
Ammonite
Placenticeras costatum

Bivalve: Pinna laqueata (razor clam)\n\nOther possiblities: Bivalve (Pinna cretacea, Atrina reginamaris).  ID'ed as Pinna laqueata (razor clam) by Keith at cretaceousfossils.com (see image 7500).

Bivalve: Pinna laqueata (razor clam)

Other possiblities: Bivalve (Pinna cretacea, Atrina reginamaris). ID'ed as Pinna laqueata (razor clam) by Keith at cretaceousfossils.com (see image 7500).

Another view\nBivalve: Pinna laqueata (razor clam)

Another view
Bivalve: Pinna laqueata (razor clam)

Another view\nBivalve: Pinna laqueata (razor clam)

Another view
Bivalve: Pinna laqueata (razor clam)

Another view\nBivalve: Pinna laqueata (razor clam)

Another view
Bivalve: Pinna laqueata (razor clam)

Pinna laqueata (razor clam) image for comparison with previous 4 images.  Species also occurs in the following:\n\nNew Jersey:  Monmouth Group: Navesink and Mount Laurel Fms; Matawan Group:  Woodbury and Merchantville Fms\nDelaware: Matawan Group: Merchantville\nMississippi: Owl Creek Formation (type specimen)\nTexas: Taylor Group:  Wolfe City and Anacacho Fms; Navarro Group:  Nacatoch Sand (Campanian to Early Maastrichtian ~ same level as the Pierre Shale in Grand County, CO.)\nNotes: Izett, Cobban, & Gill's paper on the Pierre near Kremmling did not list Pinna, nor did Meek & Hayden, Reeside, Conrad, etc.\n{from Keith at Creteceousfossils.com}

Pinna laqueata (razor clam) image for comparison with previous 4 images. Species also occurs in the following:

New Jersey: Monmouth Group: Navesink and Mount Laurel Fms; Matawan Group: Woodbury and Merchantville Fms
Delaware: Matawan Group: Merchantville
Mississippi: Owl Creek Formation (type specimen)
Texas: Taylor Group: Wolfe City and Anacacho Fms; Navarro Group: Nacatoch Sand (Campanian to Early Maastrichtian ~ same level as the Pierre Shale in Grand County, CO.)
Notes: Izett, Cobban, & Gill's paper on the Pierre near Kremmling did not list Pinna, nor did Meek & Hayden, Reeside, Conrad, etc.
{from Keith at Creteceousfossils.com}

For reference to Pinna laqueata in previous 5 images\nPlate from Whitfield, R. P.  1886\nFig's 1-2 = Pinna laqueata Conrad\nFig's 3-4 = Pinna rostriformis Morton\nFig 5 = Gervilliopsis ensiformis Conrad\nBrachiopoda and lamellibranchiata of the Raritan clays and greensand marls.  Geological Survey of New Jersey; plate XVI.

For reference to Pinna laqueata in previous 5 images
Plate from Whitfield, R. P. 1886
Fig's 1-2 = Pinna laqueata Conrad
Fig's 3-4 = Pinna rostriformis Morton
Fig 5 = Gervilliopsis ensiformis Conrad
Brachiopoda and lamellibranchiata of the Raritan clays and greensand marls. Geological Survey of New Jersey; plate XVI.

Baculite

Baculite

Bivalve\nInoceramus sp.

Bivalve
Inoceramus sp.

Another view\nBivalve\nInoceramus sp.

Another view
Bivalve
Inoceramus sp.

Unidentified

Unidentified

Cross-section of bed of bivalves.\nInoceramus sp.

Cross-section of bed of bivalves.
Inoceramus sp.

Another view\nCross-section of bed of bivalves.\nInoceramus sp.

Another view
Cross-section of bed of bivalves.
Inoceramus sp.

Unidentified ammonite

Unidentified ammonite

Unidentified ammonite

Unidentified ammonite

Unidentified ammonite

Unidentified ammonite

Ammonite\nHoploscaphites sp. (?)

Ammonite
Hoploscaphites sp. (?)

Ammonite\nHoploscaphites sp. (?)

Ammonite
Hoploscaphites sp. (?)

Misc ammonites\nSW00766

Misc ammonites
SW00766

Misc ammonites\nSW00766

Misc ammonites
SW00766

Unidentified

Unidentified

Unidentified\nAnother view of previous image

Unidentified
Another view of previous image

Baculite

Baculite

Misc. baculites

Misc. baculites

Bivalves\nInoceramus sp.

Bivalves
Inoceramus sp.