Clayton Lake tracksite (Mesa Rica Sandstone) (Cretaceous of the United States)

Where: Union County, New Mexico (36.6° N, 103.3° W: paleocoordinates 35.1° N, 61.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Mesa Rica Sandstone Formation (Dakota Group), Albian (113.0 - 100.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; burrowed, medium-grained, coarse sandstone

• "Sandstone, quartzose, medium to coarse grained, subrounded to rounded, poorly sorted, grayish orange (10 YR 7/4) unweathered, weathers to dark yellowish orange (10 YR 6/6); bedforms range from planar crossbeds to ripple laminae to trough crossbeds; clay pebbles and gravel present in trough bases, Thalassinoides burrows on top bedding plan."

Size class: macrofossils

Preservation: trace

Collected in 1982

Collection methods: surface (in situ),

Primary reference: Anonymous. 1982. Discovery of dinosaur tracks in New Mexico a bonanza. Geo Dec 1982:124 [M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 52161: authorized by Matthew Carrano, entered by Kaitlin Maguire on 28.07.2005, edited by Matthew Carrano and Steven Miller

Creative Commons license: CC BY (attribution)

Taxonomic list

• Ornithopoda includes ichnogenus Amblydactylus
Reptilia
 Ornithischia - Iguanodontipodidae
Amblydactylus sp.4 Sternberg 1932 ornithopod
Caririchnium sp.2 Leonardi 1984 ornithopod
 Theropoda - Grallatoridae
Grallator sp.3 Hitchcock 1858 theropod
 Theropoda - Ornithomimipodidae
"cf. Irenichnites gracilis" = Ornithomimipus gracilis1, Magnoavipes sp.2
"cf. Irenichnites gracilis" = Ornithomimipus gracilis1 Sternberg 1932 coelurosaur
Magnoavipes sp.2 Lee 1997 coelurosaur
or bird
 Pterosauria -