Pierre Shale Formation
349 distinct taxa, from 1,155 fossil occurrences the Paleobiology Database records under this name.
The Paleobiology Database files this name in 2 countries. That can be one body of rock crossing a border, or two rocks that happen to share a name. The database does not say which, so nothing below is added across them.
Wyoming, Colorado, South Dakota, Kansas · US
314 taxa · 1,049 fossils · 84–66 MyaFiled under the Montana Group. Members recorded: Red Bird Silty, Upper Unnamed Shale, Mitten Black Shale, Sharon Springs, Larimer Sandstone, Lower unnamed shale, upper unnamed shale, lower unnamed shale, Gammon Ferruginous, Kara Bentonitic, DeGrey, Mobridge.
Macrostrat places this rock in the Montana Group. Macrostrat’s own record
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127 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Inoceramus
- Bryozoa
- Hoploscaphites
- Cataceramus subcompressus
- Exiteloceras jenneyi
- Baculites perplexus
- Baculites gregoryensis
- Nuculana
- Placenticeras
- Baculites gilberti
- Ostrea
- Pteranodon longiceps
- Baculites
- Baculites eliasi
- Cirroceras conradi
- Drepanocheilus
- Baculites grandis
- Euspira
- Dakoticancer overanus
- Phelopteria linguaeformis
- Scaphites (Hoploscaphites) gilli
- Anaklinoceras minutum
- Baculites reesidei
- Eomunidopsis cobbani
- Nostoceras larimerense
- Rhaeboceras halli
- Tenea
- Baculites scotti
- Cymbophora
- Dentalium
- Diploconcha
- Dosiniopsis deweyi
- Nucula
- Protocardia
- Solenoceras texanum
- Anomia
- Baculites compressus
- Discoscaphites
- Hoploscaphites nodosus
- Hoploscaphites sargklofak
The 40 most often recorded, of 314.
Manitoba, Alberta, Saskatchewan · CA
45 taxa · 106 fossils · 90–66 MyaFiled under the Montana Group. Members recorded: Pembina, Millwood, Gammon Ferruginous.
Macrostrat places this rock in the Montana Group. Macrostrat’s own record
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16 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Hesperornis
- Hesperornis regalis
- Hesperornithiformes
- Enchoteuthis melanae
- Hesperornis chowi
- Toxochelys latiremis
- Chelonioidea
- Platecarpus
- Chatangiella
- Cimolichthys nepaholica
- Hesperornis macdonaldi
- Hesperornithidae
- Latoplatecarpus nichollsae
- Cretalamna appendiculata
- Enchodus
- Ichthyodectes ctenodon
- Laciniadinium
- Trinacromerum kirki
- Tylosaurus
- Ammonitida
- Bananogmius
- Brodavis
- Callocardiinae
- Cretacocarcinus smithi
- Dinogymnium
- Dinosauria
- Enchodus saevus
- Enchodus shumardi
- Hesperornis lumgairi
- Hesperornis mengeli
- Hesperornis rossicus
- Hylobiites cretaceus
- Ichthyornithes
- Isabelidinium acuminatum
- Isabelidinium cooksoniae
- Latoplatecarpus willistoni
- Osteichthyes
- Pachyrhizodus caninus
- Pachyrhizodus minimus
- Protosphyraena
The 40 most often recorded, of 45.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.