La Cancha (Oligocene of Argentina)

Also known as GBV-4

Where: Chubut, Argentina (45.7° S, 68.7° W: paleocoordinates 47.5° S, 60.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Tinguirirican mammal zone, Vera Member (Sarmiento Formation), Early/Lower Oligocene (33.9 - 28.4 Ma)

• "a flat exposure with a surface area roughly that of a "soccer pitch" near the top of the Vera Member at Profile K" of Gran Barranca.

•Tinguirirican SALMA, Early Oligocene (Woodburne et al. 2014).

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: R. H. Madden, R. F. Kay, M. G. Vucetich and A. A. Carlini. 2010. Gran Barranca: a twenty-three million year record of Middle-Cenozoic faunal evolution in Patagonia. In R. H. Madden, A. A. Carlini, M. G. Vucetich, R. F. Kay (eds.), The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia 423-439 [J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 176200: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 31.01.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Notoungulata - Notohippidae
Eomorphippus sp.3 Ameghino 1901 notoungulate
MPEF-PV 6217, isolated upper premolars and molars
Eomorphippus obscurus3 Ameghino 1901 notoungulate
MPEF-PV 6154, isolated upper and lower premolars and molars; MPEF-PV 6188, left lower m3; MPEF-PV 6197, isolated lower incisor; MPEF-PV 6791, isolated upper incisor; MPEF-PV 7945, left dentary fragment with p4-m3
"Eomorphippus pascuali" = Rosendo pascuali3 Simpson 1967 notoungulate
MPEF-PV 6159, right upper M1-2 and left upper M3, MPEF-PV 6243, right m2
 Notoungulata - Archaeohyracidae
"Archaeotypotherium propheticus" = Archaeohyrax propheticus4, "Protarchaeohyrax gracilis" = Bryanpattersonia sulcidens4
"Archaeotypotherium propheticus" = Archaeohyrax propheticus4 Ameghino 1897 notoungulate
"Protarchaeohyrax gracilis" = Bryanpattersonia sulcidens4 Ameghino 1902 notoungulate
 Notoungulata - Interatheriidae
Proargyrohyrax sp.4 Hitz et al. 2000 notoungulate
Santiagorothia chiliensis4 Hitz et al. 2000 notoungulate
Eopachyrucos pliciformis4 Simpson 1967 notoungulate
 Notoungulata - Notopithecidae
Guilielmoscottia sp.4 Ameghino 1901 notoungulate
 Notoungulata -
Puelia sp.3 Roth 1902 notoungulate
MPEF-PV 6170, right and left upper molars; MPEF-PV 5732, upper molar; MPEF-PV 6180, P4 and M1; MPEF-PV 6200, right lower p3; MPEF-PV 6206, left upper M1
 Cingulata - Dasypodidae
Parutaetus chilensis1 Carlini et al. 2009 armadillo
Barrancatatus maddeni n. sp.1 Carlini et al. 2010 armadillo
osteroderms in MPEF PV
Barrancatatus rigidus1 Ameghino 1902 armadillo
Meteutatus sp.1 Ameghino 1902 armadillo
Sadypus minutus n. sp.1 Carlini et al. 2010 armadillo
groups of osteoderms in MPEF PV
Sadypus aff. confluens1 Ameghino 1902 armadillo
 Xenarthra -
Stegotheriini indet.1 Ameghino 1889 edentate
 Sparassodonta - Hathliacynidae
"Hathliacynidae indet." = Hathlyacininae2, "? Hathliacynidae indet." = Hathlyacininae2
"Hathliacynidae indet." = Hathlyacininae2 Ameghino 1894 metatherian
MPEF-PV 4345 (right M?1)
"? Hathliacynidae indet." = Hathlyacininae2 Ameghino 1894 metatherian
MPEF-PV 4344 (right ?lower premolar)
 Polydolopimorphia - Argyrolagidae
Klohnia major n. sp.2 Goin et al. 2010 metatherian
MPEF-PV 4279 (dentary m1-3), isolated teeth and dentary and maxilla fragments
Klohnia cf. major2 Goin et al. 2010 metatherian
MPEF-PV, isolated teeth and dentary and maxilla fragments
 Polydolopimorphia - Rosendolopidae
Rosendolopidae indet.2 Goin et al. 2010 metatherian
MPEF-PV 4477 Mx, 4476 Mx, 4446 Mx
Rosendolops sp.2 Goin and Candela 1996 metatherian
MPEF-PV 4487 Mx, 4497 Mx
Rosendolops ebaios n. sp.2 Goin et al. 2010 metatherian
MPEF-PV 4449 (M?3, holotype), 4477 M?1, 4446 M?2, 4476 M?2. Tentatively referred: 3917 mx
Hondonadia cf. fierroensis2 metatherian
MPEF-PV 4412 mx, 4388 mx, 4439 Mx
Hondonadia sp.2 Goin and Candela 1998 metatherian
MPEF-PV 4416 mx, 4142 mx, 4424 Mx fragment, 4446 Mx, 4485 Mx
Hondonadia praecipitia n. sp.2 Goin et al. 2010 metatherian
MPEF-PV 4144 (maxilla M1-4, holotype), 4383 maxilla M2-3, 4384 maxilla M1-2, 4435 M1, 4442 M1, 4386 M1, 4151 M1, 4429 M2, 4438 M2, 4441 M2, 4437 M2, 4434 M3, 4436 M3, 4132 dentary with p2-3 roots and m1, 4233 m1, 4423 m2, 4418 m2, 4229 fragment m2, 4417 m2, 4385 m2, 4250 m2, 4420 m3, 4419 fragment mx. Referred: 4440 fragment Mx, 4427 fragment Mx, 4428 fragment Mx, 4430 fragment Mx, 4432 fragment Mx, 4228 fragment Mx, 4431 fragment Mx, 4433 fragment Mx, 4415 mx, 4422 mx, 4414 mx, 4425 mx, 4426 mx, 4413 mx, 4421 mx
Hondonadia pumila n. sp.2 Goin et al. 2010 metatherian
MPEF-PV 4239 (maxilla M2-3, holotype); isolated molars and dentaries
 Polydolopimorphia -
Praedens aberrans n. gen. n. sp.2
Praedens aberrans n. gen. n. sp.2 Goin et al. 2010 metatherian
MPEV-PV 4243 (Mx, holotype), 7 referred isolated teeth, 3 tentatively referred isolated teeth
 Polydolopimorphia - Polydolopidae
Kramadolops fissuratus n. sp.2 Goin et al. 2010 metatherian
MPEF-PV 4342 (M1, holotype), isolated teeth
 Theriiformes - Peradectidae
Canchadelphys cristata n. gen. n. sp.2
Canchadelphys cristata n. gen. n. sp.2 Goin et al. 2010 metatherian
MPEF-PV 4460 (left M?2, holotype), 4461 (right M?3), 4242 (right M?1)
 Theriiformes - Sternbergiidae
Sternbergiidae indet.2 Szalay 1994 marsupial
MPEF-PV 4459 (left M4), 4457 (right mx)
 Didelphimorphia - Glasbiidae
Periakros ambiguus n. gen. n. sp.2
Periakros ambiguus n. gen. n. sp.2 Goin et al. 2010 marsupial
MPEF-PV 4498 (Mx, holotype). Tentatively referred: 4496 fragment Mx, 4495 fragment maxillary with two Mx, 4493 fragment Mx
 Microbiotheria - Microbiotheriidae
Microbiotherium sp.2 Ameghino 1887 marsupial
MPEF-PV 4365 mx, 4348 mx, 4366 dentary p3-m1, 4371 Mx, 4362 M1, 4367 Mx, 4359 M?3, 4135 M?3
Clenia brevis n. sp.2 Goin et al. 2010 marsupial
MPEV-PV 4368 (m1, holotype), 4353 m1, 4364 m1, 4349 m1, 4361 m1, 4358 m2, 4354 m2, 4363 m2, 4355 m3, 4360 m3, (unnumbered) maxilla M2-3, 4146 maxilla M2-3, 4238 M1, 4372 M2. Tentatively referred: 4346 mx, 4356 mx
Eomicrobiotherium matutinum n. sp.2 Goin et al. 2010 marsupial
MPEF-PV 4369 (m1, holotype), 4370 (m2), 4352 (m2), 4350 (m2 trigonid), 4373 (m3), 4232 (M1), 4374 (M2)
 Paucituberculata - Pichipilidae
? Pichipilidae indet.2 Marshall 1980 marsupial
MPEF-PV 4410 (right mx), 4402 (left mx), 4494 (right dentary fragment with m3–4)
 Paucituberculata - Caenolestidae
Pilchenia antiqua n. sp.2 Goin et al. 2010 marsupial
MPEF-PV 4490 (maxillary P3-M2, holotype), 4486 (maxillary M2-3), 4482 (fragment M1), 4483 (fragment M1), 4484 (M2), 4148 (fragment M2), 4479 (M3), 4481 (M3), 4480 (M3), 4478 (M3), 4474 (M4), 4129 (dentary p3, partial m1), 4126 (p3), 4489 (m1), 4235 (m2), 4470 (m2), 4488 (partial m2), 4469 (m3), 4465 (m3), 4468 (m3), 4467 (m3), 4471 (m3), 4466 (m3), 4464 (fragment m3), 4462 (m4), 4463 (m4)