Big Water, Tropic Shale (Cretaceous of the United States)

Where: Utah (37.1° N, 111.7° W: paleocoordinates 40.6° N, 77.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Mammites nodosoides ammonoid zone, Tropic Shale Formation, Early/Lower Turonian (93.5 - 89.3 Ma)

• late early Turonian, ca. 4.5 m below the Lowest Stratigraphic Datum of the Mammites nodosoides ammonite zone and 65 m above base of formation

• bed-level stratigraphic resolution

Environment/lithology: marine; shale

Size class: macrofossils

Collected by MNA in 2000–2001

Collection methods: quarrying, surface (float), surface (in situ), mechanical,

Primary reference: D. D. Gillette, L. B. Albright, A. L. Titus and M. Graffam. 2001. Discovery and paleogeographic implications of a therizinosaurid dinosaur from the Turonian (Late Cretaceous) of southern Utah. Journal of Vertebrate Paleontology 21(3, suppl.):54A [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 67973: authorized by Matthew Carrano, entered by Matthew Carrano on 19.12.2006, edited by Hallie Street

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Acanthoceratidae
Mammites nodosoides Schlüter 1871 ammonite
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Reptilia
 Theropoda - Therizinosauridae
Nothronychus graffami n. sp.3 Zanno et al. 2009 coelurosaur
UMNH VP 16420
 Plesiosauria - Polycotylidae
Eopolycotylus rankini n. gen. n. sp.1
Eopolycotylus rankini n. gen. n. sp.1 Albright et al. 2007 plesiosaur
MNA V9445
Actinopteri
 Ichthyodectiformes - Saurodontidae
Gillicus arcuatus2 Cope 1875
MNA V10081