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
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 | |
? Caturidae indet. Owen 1860 bowfin | |
Pycnodontidae indet. Agassiz 1833 | |
cf. Albulidae indet. Bleeker 1859 bonefish | |
Pachyrhizodus minimus Stewart 1899 | |
Plethodidae indet. Loomis 1900 | |
Enchodus cf. shumardi Leidy 1856
Enchodus cf. gladiolus Cope 1872 | |
Protosphyraena sp. Leidy 1857 | |
Reptilia | |
Scincomorpha indet. squamates | |
Coniasaurus crassidens Owen 1850 squamates | |
Chondrichthyes | |
Ptychodus occidentalis Leidy 1868 elasmobranch
Ptychodus rhombodus Underwood and Cumbaa 2010 elasmobranch | |
Rajidae indet. Blainville 1816 skate | |
Rhinobatos cf. incertus Cappetta 1973 guitarfish | |
Lamniformes indet. Berg 1958 mackerel shark | |
"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 | |
Cretalamna appendiculata Agassiz 1835 mackerel shark | |
Cretomanta canadensis Case et al. 1990 mackerel shark | |
Squalicorax curvatus Williston 1900 crow shark | |
Cretoxyrhina mantelli Agassiz 1835 mackerel shark | |
Telodontaspis agassizensis Underwood and Cumbaa 2010 mackerel shark
Archaeolamna cf. kopingensis Davis 1890 mackerel shark |