Also known as Helagras prisciformes type locality
Where: San Juan County, New Mexico (36.3° N, 108.1° W: paleocoordinates 43.2° N, 87.2° W)
• coordinate estimated from map
When: Nacimiento Formation, Puercan (66.0 - 63.3 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size classes: macrofossils, mesofossils
Collected by D. Baldwin, Cope in 1881, 1884
Primary reference: C. W. Gilmore. 1938. Fossil snakes of North America. Geological Society of America Special Paper (9)1-96 [J. Head/J. Head]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 125183: authorized by Mark Uhen, entered by Margaret Shalap on 06.03.2012, edited by Terri Cleary, Philip Mannion and Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Helagras prisciformis n. gen. n. sp.
Helagras prisciformis n. gen. n. sp. Cope 1883 snake AMNH 1628 (holotype), two posterior thoracic vertebrae; AMNH 1629, about 90 anterior and posterior thoracic vertebrae
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"Aspideretes vegetus n. sp." = Plastomenus vegetus2
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Mammalia | |
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