Also known as Cerdas beds
Where: Bolivia (20.9° S, 66.3° W: paleocoordinates 21.4° S, 62.1° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Burdigalian to Burdigalian (20.4 - 13.8 Ma)
• The stratigraphic section is exposed on both sides of the road between Cerdas and Atocha and is about 250 m thick (Fig. 2), spanning ca. 3800–4050 m elevation.
•There are multiple fossiliferous levels shown in fig. 2.
•This collection had been assigned to the Langhian, but the dates also fall within the Burdigalian.
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•Townsend and Croft 2010: Friasian?
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; silty sandstone and mudstone
Size classes: macrofossils, mesofossils
Collected in 2012-2014
Primary reference: D. A. Croft, F. Anaya, D. Auerbach, C. Garzione, and B. J. MacFadden. 2009. New Data on Miocene Neotropical Provinciality from Cerdas, Bolivia. Journal of Mammal Evolution 16:175-198 [D. Croft/M. Sameh/M. Sameh]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 91435: authorized by Darin Croft, entered by Melissa Sameh on 26.09.2009, edited by Jelle Zijlstra, Grace Varnham, Miranta Kouvari and Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Borhyaenoidea sp.2 Ameghino 1894 metatherian Gen. et sp. nov. "UATF-V-001984, associated cranial and postcranial bones including a partial basicranium; partial ante- rior palate preserving several alveoli; partial mandible in several pieces preserving the symphysis, p1–m4 alveoli on both sides, partial Lp3–m3, complete Lm4, partial Rp3, complete Rm3, par- tial Rm4; several partial vertebrae (articulated); other unpre- pared postcranial fragments."
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"Protypotherium cf. attenuatum" = Protypotherium praerutilum Ameghino 1887 notoungulate UATF-V-000860
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"Plesiotypotherium" minus4 Croft 2007 notoungulate Plesiotypotherium minus and "Plesiotypotherium" minus. But they say that none of P. minus from Cerdas are actually partaining in the genus. So both are "P". minus
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Hegetotherium cerdasensis n. sp.2
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Uruguaytheriinae sp.2 Kraglievich 1928 placental Gen.? et sp. nov. "UATF-V-001981, many craniodental fragments."
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"Xyophorus cf. bondesioi" = Mcdonaldocnus bondesioi
"Xyophorus cf. bondesioi" = Mcdonaldocnus bondesioi Scillato-Yané 1979 edentate UATF-V-000871, partial right mandible, UATF-V-0008850, manual ungual phalanx, UATF- V-0008825, pedal ungual phalanx
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Megatheriinae indet.2 Gill 1872 edentate "UATF-V-001989, partial right dentary preserving the last molariform (m4) and the coronoid process."
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