Blue Lizard Mine (Triassic of the United States)

Where: San Juan County, Utah (37.6° N, 110.3° W: paleocoordinates 13.2° N, 48.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Monitor Butte Member (Chinle Formation), Norian (228.0 - 208.5 Ma)

• Five meters above the contact with the Shinarump Conglomerate

•

•This is also to the Blue Mesa Member of the Chinle formation which has been dated to Norian age between magneto zones PF5r and PF8n (roughly 221.75–216.97Ma) (Kent et al. 2019)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; brown mudstone and lenticular limestone

• "The small bones were weathering out of several limestone lenses within a tan to brown mudstone."

Size class: macrofossils

Collected by Parrish, Good, Dubiel in 1983–1988

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

• UCM: University of Colorado Museum

Primary reference: J. M. Parrish. 1999. Small fossil vertebrates from the Chinle Formation (Upper Triassic) of southern Utah. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:44-50 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 92808: authorized by Richard Butler, entered by Richard Butler on 30.11.2009, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• Also includes numerous coprolites of unspecified affinity.
Show authors, comments, and common names
Bivalvia
 Unionida - Unionidae
Unionidae indet.
Unionidae indet. Rafinesque 1820 freshwater mussel
Reptilia
 Diapsida - Doswelliidae
Vancleavea campi2, Doswellia sp.1
Vancleavea campi2 Long and Murry 1995 archosauromorph
UCM 76193 partim, proximal humerus
Doswellia sp.1 Weems 1980 archosauromorph
UCM 76194, three osteoderms
 Loricata -
Crocodylomorpha indet.
Crocodylomorpha indet. crocodilian
UCM 76191-76195, vertebrae, paramedian and lateral armor plates, partial humeri, femur and fibula
1Heckert et al. 2007; 2Nesbitt et al. 2009