Where: Plymouth County, Iowa (42.6° N, 96.5° W: paleocoordinates 42.6° N, 60.3° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Greenhorn Limestone Formation, Early/Lower Turonian (93.5 - 89.3 Ma)
• Bottom-most 2 m of the basal Greenhorn Limestone
• group of beds-level stratigraphic resolution
Environment/lithology: lithified limestone
Size class: macrofossils
Collection methods: chemical, acetic
• Repostory: Sternberg Museum of Natural History, Fort Hays State University (FHSM)
Primary reference: K. L. Gorman, K. Shimada, and B. J. Witzke. 2014. Late Cretaceous marine fishes from the basal Greenhorn Limestone in western Iowa. Transactions of the Kansas Academy of Science 117:91-99 [M. Clapham/M. Clapham]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 213400: authorized by Matthew Clapham, entered by Matthew Clapham on 30.08.2020
Creative Commons license: CC BY (attribution)
Taxonomic list
Actinopteri | |
? Hadrodus sp. Leidy 1857 | |
Caturidae indet. Owen 1860 bowfin | |
Ichthyodectiformes indet. Bardack and Sprinkle 1969 | |
Pachyrhizodus minimus Stewart 1899 | |
? Apateodus sp. Woodward 1901 | |
Enchodus gladiolus Cope 1872
Enchodus shumardi Leidy 1856 | |
Plethodidae indet. Loomis 1900 | |
Chondrichthyes | |
Ptychodus cf. whipplei Marcou 1858 elasmobranch | |
? Pteroscyllium sp. Cappetta 1980 cat shark | |
Archaeolamna cf. kopingensis Davis 1890 mackerel shark | |
Squalicorax cf. falcatus Agassiz 1843 crow shark
Squalicorax cf. pawpawensis Siverson et al. 2007 crow shark | |
Cretoxyrhina mantelli Agassiz 1835 mackerel shark | |
Bivalvia | |
Mytiloides sp. Brongniart 1822 clam |