Dromicosuchus Quarry (Triassic to of the United States)

Where: Durham County, North Carolina (35.9° N, 78.9° W: paleocoordinates 7.6° N, 21.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Carnian to Carnian (237.0 - 208.5 Ma)

• Late Carnian or early Norian.

•All fossils found together in one bed within the "Lithofacies Association II". "Huber et al. (1993) regarded Lithofacies Association II as the stratigraphic equivalent of the lower Sanford Formation in the neighboring Sanford sub-basin. Based on the occurrence of the palaeonisciform fish Turseodus, Olsen et al. (1989) correlated Lithofacies Association II of the Deep River basin with the Lockatong Formation of the Newark basin and the 'upper member' of the Cow Branch Formation of the Dan River basin and thus regarded its age as late Carnian. Lucas et al. (1998) used the presence of the stagonolepidid Stegomus arcuatus (which they referred to Aetosaurus) to argue for an early to middle Norian age for what they termed the 'Neshanician land-vertebrate faunachron,' which includes the vertebrate assemblage from Lithofacies Association II...The biostratigraphic evidence cannot definitely resolve the question whether the tetrapod assemblage from Lithofacies Association II is late Carnian or early Norian in age."

• bed-level stratigraphic resolution

Environment/lithology: fluvial; bioturbated, red, calcareous sandstone and sandy mudstone

• "adjacent to a channel deposit"
• "red, bioturbated calcareous sandstone and sandy mudstone"

Size class: macrofossils

Collection methods: salvage, quarrying, mechanical,

Primary reference: H. -D. Sues, P. E. Olsen, and J. G. Carter. 1999. A Late Triassic traversodont cynodont from the Newark Supergroup of North Carolina. Journal of Vertebrate Paleontology 19:351-354 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 32343: authorized by John Alroy, entered by John Alroy on 25.06.2003, edited by Alexander Kourmadas and Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Amphibia
 Temnospondyli -
? Temnospondyli indet.3 tetrapod
Single bone
Osteichthyes
 Therapsida - Traversodontidae
Plinthogomphodon herpetairus n. gen. n. sp. Sues et al. 1999 cynodont
UNC 15576, snout, left coracoid and humerus
 Dicynodontia -
Dicynodontia indet.3 Owen 1859 dicynodont
two articulated phalanges of a large dicynodont
Reptilia
 Pseudosuchia - Stagonolepididae
Stegomus sp.3 Marsh 1896 aetosaur
bones/osteoderms
 Loricata -
Crocodylomorpha indet.1 Hay 1930 crocodilian
NCSM 21722, complete, articulated skeleton with osteoderms of an undescribed basal crocodylomorph
Dromicosuchus grallator n. gen. n. sp.3 Sues et al. 2003 crocodilian
UNC 15574 (holotype), skull and partial skeleton
 Loricata - Rauisuchidae
Postosuchus alisonae n. sp.2 Peyer et al. 2008 rauisuchid
UNC 15575 (holotype), partial skeleton