South-central Republic County (Jetmore Chalk) (Cretaceous of the United States)

Where: Republic County, Kansas (39.7° N, 97.7° W: paleocoordinates 40.1° N, 62.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Jetmore Chalk Member (Greenhorn Limestone Formation), Early/Lower Turonian (93.5 - 89.3 Ma)

• A chalky shale portion of the Jetmore Chalk, specifically between Hattin’s (1975) Marker Units JT-9 and JT-10.

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, calcareous shale

Size class: macrofossils

Collection methods: bulk, surface (in situ), chemical, acetic

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

Primary reference: F. Guzzo and K. Shimada. 2018. A new fossil vertebrate locality of the Jetmore Chalk Member of the Upper Cretaceous Greenhorn Limestone in north-central Kansas, U.S.A. Transactions of the Kansas Academy of Science 121:59-68 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 213385: authorized by Matthew Clapham, entered by Matthew Clapham on 30.08.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Lamniformes - Anacoracidae
Squalicorax cf. falcatus Agassiz 1843 crow shark
 Lamniformes - Archaeolamnidae
Archaeolamna kopingensis Davis 1890 mackerel shark
 Lamniformes - Cretoxyrhinidae
Cretoxyrhina mantelli Agassiz 1835 mackerel shark
 Lamniformes - Cardabiodontidae
Cardabiodon sp. Siverson 1999 mackerel shark
 Hybodontiformes - Ptychodontidae
Ptychodus cf. whipplei Marcou 1858 elasmobranch
Actinopteri
 Crossognathiformes - Pachyrhizodontidae
Pachyrhizodus sp. Agassiz 1850
Pachyrhizodus minimus Stewart 1899
 Ichthyodectiformes - Ichthyodectidae
Xiphactinus audax Leidy 1870
 Tselfatiiformes - Plethodidae
Plethodidae indet. Loomis 1900
 Amiiformes - Caturidae
Caturidae indet. Owen 1860 bowfin
 Pycnodontiformes - Pycnodontidae
Hadrodus sp. Leidy 1857
Osteichthyes
 Acipenseriformes -
Cylindracanthus sp. Leidy 1856 ray-finned fish
Reptilia
 Squamata - Dolichosauridae
Coniasaurus cf. crassidens Owen 1850 squamates