Where: Chubut, Argentina (45.4° S, 67.4° W: paleocoordinates 47.7° S, 58.0° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Barrancan zone, Bartonian (41.3 - 38.0 Ma)
• Cifelli (1985) listed this collection as a Casamayoran locality without specifying its allocation to the Barrancan or Vacan, but the fauna is Barrancan.
•
•Woodburne et al. (2014) consider the Barrancan to be Middle Eocene (late Lutetian–Bartonian) in age.
Environment/lithology: terrestrial; lithology not reported
Size class: mesofossils
Primary reference: R. Cifelli. 1985. Biostratigraphy of the Casamayoran, Early Eocene of Patagonia. American Museum Novitates 2820:1-26 [J. Zijlstra/J. Zijlstra]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 176168: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 30.01.2016, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
| Mammalia | |
"Isotemnus distentus n. sp." = Anisotemnus distentus2, Pleurostylodon sp.4, "Pleurostylodon modicus" = Pleurostylodon modicus, "Dialophus simus n. sp." = Pleurostylodon modicus2
"Isotemnus distentus n. sp." = Anisotemnus distentus2 Ameghino 1901 notoungulate MACN 10588, jaws, isolated teeth, and other fragments, probably all of one individual. Labeled as from "Este de R. Chico. Golfo de S. Jorge. Pico Salamanca."
"Pleurostylodon modicus" = Pleurostylodon modicus Ameghino 1897 notoungulate
"Dialophus simus n. sp." = Pleurostylodon modicus2 Ameghino 1897 notoungulate MACN 10589, left M1 (lectotype), and various other teeth and jaw fragments that may not be conspecific
| |
|
| |
"Notopithecus adapinus" = Notopithecus adapinus, "Epipithecus confluens n. sp." = Notopithecus adapinus2
"Notopithecus adapinus" = Notopithecus adapinus Ameghino 1897 notoungulate
"Epipithecus confluens n. sp." = Notopithecus adapinus2 Ameghino 1897 notoungulate MACN 10862, maxilla P4-M2
| |
Isotypotherium annulatum n. gen. n. sp.2
| |
|
Notostylops appressus1 Ameghino 1902 notoungulate One specimen from the AMNH and one from the Feruglio collection
| |