Also known as GTO-43
Where: Guanajuato, Mexico (21.1° N, 100.8° W: paleocoordinates 21.4° N, 99.2° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Rancho Viejo Beds Formation, Late/Upper Hemphillian (10.3 - 4.9 Ma)
• said to be late Hemphillian
•most material is from a 2 m interval
•immediately underlies a fission track on zircon date of 4.4 +/- 0.3 Ma (Flynn et al. 2005)
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial; lithology not reported
Size classes: macrofossils, mesofossils
Primary reference: O. Carranza-Castaneda. 1992. Una nueva localidad del henfiliano tardio en la mesa central de Mexico. Revista Mexicana de Ciencias Geologicas 10(2):179-196 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 18740: authorized by John Alroy, entered by John Alroy on 12.04.1997, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
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"Agriotherium cf. schneideri" = Huracan schneideri
"Agriotherium cf. schneideri" = Huracan schneideri Sellards 1916 bear described by Miller and Carranza 1996
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Dinohippus mexicanus Lance 1950 horse
Astrohippus stockii Lance 1950 horse
Neohipparion eurystyle Cope 1893 hipparionine horse | |
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