Twin Peaks (Cretaceous of the United States)

Also known as Case Estuary Site 2:30

Where: Washaki County, Wyoming (44.1° N, 107.7° W: paleocoordinates 51.0° N, 75.6° W)

• coordinate based on nearby landmark

When: Teapot Sandstone Member (Mesaverde Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

Environment/lithology: estuary or bay; sandstone

Size classes: macrofossils, mesofossils

Primary reference: G. R. Case. 1987. A new selachian fauna from the late Campanian of Wyoming (Teapot Sandstone Member, Mesaverde Formation, Big Horn Basin). Palaeontographica Abteilung A 197(Lfg. 1-3):1-37 [J. Kriwet/W. Glaeser/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 70451: authorized by Juergen Kriwet, entered by Wolfgang Glaeser on 23.03.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Chondrichthyes
 Synechodontiformes - Palaeospinacidae
Synechodus turneri n. sp.
Synechodus turneri n. sp. Case 1987 elasmobranch
 Rajiformes -
Squatirhina roessingi n. sp.
Squatirhina roessingi n. sp. Case 1987 ray
 Rajiformes - Sclerorhynchidae
Ischyrhiza basinensis n. sp., Ischyrhiza mira, Ischyrhiza avonicola
Ischyrhiza mira Leidy 1856 ray
Ischyrhiza avonicola Estes 1964 ray
 Rajiformes - Ptychotrygonidae
Ptychotrygon boothi n. sp., Ptychotrygon ellae n. sp., Ptychotrygon greybullensis n. sp.
Ptychotrygon ellae n. sp. ray
Ptychotrygon greybullensis n. sp. Case 1987 ray
 Rajiformes -
Protoplatyrhina renae
Protoplatyrhina renae Case 1978 guitarfish
 Rajiformes - Rhinobatidae
Myledaphus bipartitus, Rhinobatos casieri
Myledaphus bipartitus Cope 1876 guitarfish
Rhinobatos casieri Herman 1977 guitarfish
 Carcharhiniformes - Triakidae
Archaeotriakis ornatus n. sp., Archaeotriakis rochelleae
Archaeotriakis ornatus n. sp. hound shark
Archaeotriakis rochelleae Case 1978 hound shark
 Orectolobiformes - Orectolobidae
Cretorectolobus olsoni
Cretorectolobus olsoni Case 1978 wobbegong
 Orectolobiformes - Ginglymostomatidae
"Ginglymostoma globidens" = Plicatoscyllium globidens
"Ginglymostoma globidens" = Plicatoscyllium globidens Cappetta and Case 1975 nurse shark
 Orectolobiformes - Brachaeluridae
Brachaelurus bighornensis n. sp.
Brachaelurus bighornensis n. sp. carpet shark
 Lamniformes - Odontaspididae
Pseudodontaspis herbsti n. gen. n. sp., Odontaspis cheathami n. sp., Odontaspis steineri n. sp., Hypotodus grandis
Pseudodontaspis herbsti n. gen. n. sp. sand tiger shark
Odontaspis cheathami n. sp. sand tiger shark
Odontaspis steineri n. sp. sand tiger shark
Hypotodus grandis Case 1978 sand tiger shark
 Lamniformes - Mitsukurinidae
Scapanorhynchus texanus
Scapanorhynchus texanus Roemer 1852 goblin shark
 Lamniformes - Archaeolamnidae
"Plicatolamna arcuata" = Archaeolamna kopingensis
"Plicatolamna arcuata" = Archaeolamna kopingensis Davis 1890 mackerel shark
 Lamniformes - Anacoracidae
Squalicorax kaupi
Squalicorax kaupi Agassiz 1843 crow shark
 Squaliformes - Squalidae
Centrophoroides worlandensis n. sp.
Centrophoroides worlandensis n. sp. dogfish shark
 Hybodontiformes - Lonchidiidae
"Lissodus griffisi n. sp." = Lonchidion griffisi
"Lissodus griffisi n. sp." = Lonchidion griffisi Case 1987 elasmobranch
 Hybodontiformes - Hybodontidae
"Hybodus montanensis" = Meristodonoides montanensis
"Hybodus montanensis" = Meristodonoides montanensis Case 1978 elasmobranch