PBDB Collection

Dinosaur State Park, Rocky Hill tracksite (Jurassic of the United States)

Where: Connecticut (41.7° N, 72.7° W: paleocoordinates 22.4° N, 19.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: East Berlin Formation (Meriden Group), Hettangian (201.3 - 199.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, gray sandstone and gray mudstone

• area described as a Triassic "mud hole"; later "a large permanent lake"; also "subaerial and shallow-water lacustrine conditions"

• "Tracks are in a sequence of gray arkoses and and gray shales. The traks are best preserved in the arkosic units as the bedding planes are well developed. The arkosic units display excellent ripple marks, raindrop impressions, mud cracks and cross bedding."

Size class: macrofossils

Preservation: mold/impression, trace

Collected by E. McCarthy in 1966-1968; reposited in the YPM

Collection methods: surface (in situ),

• discovered 24 August 1966

Primary reference: J. H. Ostrom. 1967. Peabody paleontologists assist new dinosaur-track park. Discovery 2(2):21-24 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 55741: authorized by Matthew Carrano, entered by Kaitlin Maguire on 03.11.2005, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Reptilia
Theropoda - Grallatoridae	"Grallator cuneatus" = Grallator tenuis², Eubrontes sp.¹, Eubrontes giganteus, "Anchisauripus sillimani" = Eubrontes sillimani "Grallator cuneatus" = Grallator tenuis² Hitchcock 1858 theropod Eubrontes sp.¹ Hitchcock 1845 theropod swimming tracks Eubrontes giganteus Hitchcock 1836 theropod "Anchisauripus sillimani" = Eubrontes sillimani Hitchcock 1843 theropod
Pseudosuchia - Batrachopodidae	Batrachopus dispar Batrachopus dispar Lull 1904 aetosaur

¹Coombs 1980; ²Ostrom and Quarrier 1968