Table Mesa, Comanche National Grassland (Cretaceous of the United States)

Where: Baca County, Colorado (37.5° N, 103.1° W: paleocoordinates 37.0° N, 66.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lincoln Limestone Member (Greenhorn Limestone Formation), Middle Cenomanian (99.6 - 93.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified packstone

• calcarenite

Size class: macrofossils

Collected by B.A. Schumacher

Collection methods: chemical, acetic

• Repository: Sternberg Museum of Natural History, Fort Hays State University (FHSM)

Primary reference: C. Gallardo, K. Shimada, and B. A. Schumacher. 2012. A new Late Cretaceous marine vertebrate assemblage from the Lincoln Limestone Member of the Greenhorn Limestone in southeastern Colorado. Transactions of the Kansas Academy of Science 115:107-116 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 213403: authorized by Matthew Clapham, entered by Matthew Clapham on 30.08.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Amiiformes - Caturidae
? Caturidae indet. Owen 1860 bowfin
 Pycnodontiformes - Mesturidae
 Pycnodontiformes - Pycnodontidae
Pycnodontidae indet. Agassiz 1833
 Albuliformes - Albulidae
cf. Albulidae indet. Bleeker 1859 bonefish
 Crossognathiformes - Pachyrhizodontidae
 Tselfatiiformes - Plethodidae
Plethodidae indet. Loomis 1900
 Aulopiformes - Enchodontidae
 Pachycormiformes - Pachycormidae
Protosphyraena sp. Leidy 1857
Reptilia
 Squamata -
 Squamata - Dolichosauridae
Coniasaurus crassidens Owen 1850 squamates
Chondrichthyes
 Hybodontiformes - Ptychodontidae
Ptychodus occidentalis Leidy 1868 elasmobranch
Ptychodus rhombodus Underwood and Cumbaa 2010 elasmobranch
 Rajiformes - Rajidae
Rajidae indet. Blainville 1816 skate
 Rajiformes - Rhinobatidae
Rhinobatos cf. incertus Cappetta 1973 guitarfish
 Euselachii -
Lamniformes indet. Berg 1958 mackerel shark
 Lamniformes - Odontaspididae
"Megachasma comanchensis" = Pseudomegachasma comanchensis, Eostriatolamia tenuiplicatus, "Carcharias saskatchewanensis" = Microcarcharias saskatchewanensis
"Megachasma comanchensis" = Pseudomegachasma comanchensis Shimada 2007 sand tiger shark
Eostriatolamia tenuiplicatus Cappetta and Case 1975 sand tiger shark
"Carcharias saskatchewanensis" = Microcarcharias saskatchewanensis Case et al. 1990 sand tiger shark
 Lamniformes - Otodontidae
Cretalamna appendiculata Agassiz 1835 mackerel shark
 Lamniformes - Aquilolamnidae
Cretomanta canadensis Case et al. 1990 mackerel shark
 Lamniformes - Anacoracidae
Squalicorax curvatus Williston 1900 crow shark
 Lamniformes - Cretoxyrhinidae
Cretoxyrhina mantelli Agassiz 1835 mackerel shark
 Lamniformes - Archaeolamnidae
Telodontaspis agassizensis Underwood and Cumbaa 2010 mackerel shark
Archaeolamna cf. kopingensis Davis 1890 mackerel shark