Hell's Bar (Cretaceous of the United States)

Also known as KU-GOV-42

Where: Gove County, Kansas (38.7° N, 100.7° W: paleocoordinates 42.0° N, 67.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Clioscaphites choteauensis ammonoid zone, Niobrara Formation (Colorado Group), Santonian (86.3 - 83.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Preservation: adpression

Collected in 1976, 1977; reposited in the AMNH

Collection methods: mechanical, acetic

• University of Kansas Museum of Natural History collection

•"a large number" of fishes were collected by "examining the interiors of Inoceramus shells"

•material was "cleaned with pins and washed gently in 5% acetic acid"

Primary reference: E. O. Wiley and J. D. Stewart. 1981. Urenchelys abditus, new species, the first undoubted eel (Teleostei: Anguilliformes) from the Cretaceous of North America. Journal of Vertebrate Paleontology 1(1):43-47 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 94652: authorized by John Alroy, entered by John Alroy on 06.03.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Maxillopoda
 Acrothoracica -
Acrothoracica indet. Gruvel 1905 barnacle
"acrothoracican borings"
 Scalpelliformes - Scalpellidae
Scalpellidae indet. Pilsbry 1907 barnacle
Bivalvia
 Myalinida - Inoceramidae
"Inoceramus platinus" = Platyceramus platinus
"Inoceramus platinus" = Platyceramus platinus Logan 1898 clam
 Ostreida - Ostreidae
 Hippuritida - Radiolitidae
Cephalopoda
 Ammonitida - Scaphitidae
 Ammonitida - Baculitidae
Baculites sp. Lamarck 1799 ammonite
Chondrichthyes
 Hybodontiformes - Ptychodontidae
Ptychodus mortoni Agassiz 1843 elasmobranch
 Lamniformes - Anacoracidae
Squalicorax kaupi Agassiz 1843 crow shark
Squalicorax falcatus Agassiz 1843 crow shark
 Lamniformes - Cretoxyrhinidae
Cretoxyrhina mantelli Agassiz 1843 mackerel shark
Actinopteri
 Anguilliformes - Muraenidae
Urenchelys abditus n. sp. Wiley and Stewart 1981 eel
 Albuliformes - Albulidae
 Tselfatiiformes - Plethodidae
 Salmoniformes - Enchodontidae
 Holocentriformes - Holocentridae
Holocentridae indet.
"at least two" forms
 Ichthyodectiformes - Saurodontidae
 Ichthyodectiformes - Ichthyodectidae
Xiphactinus audax Leidy 1870
 Crossognathiformes - Pachyrhizodontidae
 Pachycormiformes - Pachycormidae
Reptilia
 Testudines - Toxochelyidae
Toxochelyidae indet. Baur 1895 sea turtle
 Pterosauria -
Pteranodon sp. Marsh 1876 pterosaur
 Squamata - Mosasauridae
Mosasauridae indet. Gervais 1852 mosasaur
 Plesiosauria -