AMNH 33-1, Middle Dome (Cretaceous of the United States)

Also known as Tenontosaurus type site, AMNH 3040

Where: Wheatland County, Montana (46.3° N, 109.7° W: paleocoordinates 45.9° N, 63.8° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Himes Member (Cloverly Formation), Albian (113.0 - 100.5 Ma)

• questionable stratigraphic assignment; = Ostrom's Unit VII, fossils from approx. 60 ft below base of Unit VIII

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; claystone

Size classes: macrofossils, mesofossils

Collected by B. Brown in 1933; reposited in the AMNH

Collection methods: quarrying, mechanical,

Primary reference: J. H. Ostrom. 1970. Stratigraphy and paleontology of the Cloverly Formation (Lower Cretaceous) of the Bighorn Basin area, Wyoming and Montana. Peabody Museum Bulletin 35:1-234 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 47346: authorized by Matthew Carrano, entered by Matthew Carrano on 23.02.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Avetheropoda - Caenagnathidae
Microvenator celer n. gen. n. sp.
Microvenator celer n. gen. n. sp. Ostrom 1970 coelurosaur
AMNH 3041
 Avetheropoda - Dromaeosauridae
Deinonychus antirrhopus Ostrom 1969 coelurosaur
numerous teeth
 Neornithischia -
Tenontosaurus tilletti n. gen. n. sp.
Tenontosaurus tilletti n. gen. n. sp. Ostrom 1970 bird foot dinosaur
AMNH 3040