El Pajarito ( of Argentina)

Where: Chubut, Argentina (43.8° S, 69.6° W: paleocoordinates 45.0° S, 62.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Deseadan mammal zone, Sarmiento Formation, Deseadan (29.0 - 21.0 Ma)

• "Middle section of the Sarmiento Formation" Deseaden SALMA

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by R. Pascual, P. Bondesio; reposited in the MLP

Primary reference: Z. Gasparini. 1984. New Tertiary Sebecosuchia (Crocodylia: Mesosuchia) from Argentina. Journal of Vertebrate Paleontology 4(1):85-95 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92670: authorized by John Alroy, entered by John Alroy on 23.11.2009, edited by Jelle Zijlstra and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Astrapotheria - Astrapotheriidae
Parastrapotherium indet.5 Ameghino 1895 placental
 Theriamorpha - Pyrotheridae
Pyrotherium indet.5 Ameghino 1888 placental
 Notoungulata - Leontiniidae
Ancylocoelus frequens4 Ameghino 1894 notoungulate
Leontinia gaudryi4 Ameghino 1894 notoungulate
 Notoungulata - Interatheriidae
Argyrohyrax proavus6 Ameghino 1897 notoungulate
MLP 61-IV-107-108
Cochilius sp.6 Ameghino 1902 notoungulate
MLP 61-IV-11-170-185, 198-202 and 314
 Notoungulata - Mesotheriidae
Trachytherus spegazzinianus1 Ameghino 1889 notoungulate
"Numerous" specimens, MLP 61-VI-11-...
 Notoungulata - Archaeohyracidae
Archaeohyrax patagonicus3 Ameghino 1897 notoungulate
 Cingulata - Glyptatelidae
Clypeotherium magnum n. gen. n. sp.5
Clypeotherium magnum n. gen. n. sp.5 Scillato-Yané 1977 edentate
MLP 61-IV-11-76, 35 scutes of the same individual
 Cingulata - Propalaehoplophoridae
"Propalaehoplophorinae indet." = Propalaehoplophoridae5
"Propalaehoplophorinae indet." = Propalaehoplophoridae5 Ameghino 1891 edentate
 Panameriungulata - Adianthidae
Tricoelodus bicuspidatus2 Ameghino 1897 placental
MLP 61-IV-11-65, maxillary fragments with right P4-M3, left P2-4, M2-3
Reptilia
 Loricata - Sebecidae
Sebecidae indet. Savage 1951 crocodilian
MLP 75-II-6-23 (frontal)