Cantera de la Pala Mécanica (MPCA) (Cretaceous to of Argentina)

Also known as Cinco Saltos, Lago Pellegrini

Where: Río Negro, Argentina (38.8° S, 68.0° W: paleocoordinates 41.7° S, 52.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Anacleto Formation (Neuquén Group), Early/Lower Campanian to Early/Lower Campanian (83.5 - 70.6 Ma)

• lower part of Allen Formation, Rio Colorado Subgroup - reassigned to Anacleto Fm.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; medium-grained, coarse, yellow sandstone

• "medium to coarse light yellowish friable sandstones"

Size classes: macrofossils, mesofossils

Collected by R. Abel in 1975–1983

Collection methods: mechanical,

• Listed as 1983 in Bonaparte (1996)

Primary reference: J. F. Bonaparte. 1984. I dinosauri dell’Argentina [. In G. M. Ronzoni, M. L. Greggio, & T. B. Guarinoni (eds.), Sulle Orme dei Dinosauri 125-143 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 32339: authorized by Matthew Carrano, entered by Matthew Carrano on 25.06.2003, edited by Roger Benson and Jonathan Tennant

Creative Commons license: CC BY (attribution)

Taxonomic list

 Testudines -
"Chelonii indet." = Testudines2
"Chelonii indet." = Testudines2 Batsch 1788 turtle
 Saurischia - Titanosauridae
"Titanosaurus araukanicus" = Laplatasaurus araukanicus5
"Titanosaurus araukanicus" = Laplatasaurus araukanicus5 Huene 1927 titanosaurid
 Saurischia -
Pellegrinisaurus powelli n. gen. n. sp.4
Pellegrinisaurus powelli n. gen. n. sp.4 Salgado 1996 sauropod
Powell 1986; MPCA 1500
 Saurischia - Abelisauridae
Abelisaurus comahuensis n. gen. n. sp.1
Abelisaurus comahuensis n. gen. n. sp.1 Bonaparte 1984 ceratosaur
MC 11098, skull
 Sauropterygia -
Plesiosauroidea indet.3 Welles 1943 plesiosaur
MUCPv 131, 1 cervical, 2 dorsals, 3 caudals, 1 tarsal or carpal, 3 phalanges, & 1 fragment of scapular girdle
 Sauropterygia - Polycotylidae
Polycotylidae indet.3 Williston 1908 plesiosaur
MML-Pv 43, partial subadult postcranial skeleton: 10 cervical vertebral centra, some very damaged; several fragments of cervical neural arches; some incomplete cervical ribs; 6 cervical neural spines; 6 dorsal vertebral centra, some very incomplete; numerous incomplete dorsal ribs, some with articular ends
 Sauropterygia - Elasmosauridae
Elasmosauridae indet.3 Cope 1869 elasmosaur
MCS 4, series of 24 vertebrae, several ribs, incomplete R scapula, 1 coracoid fragment, proximal end of R humerus; pelvis formed by both incomplete pubes and ischia; MUCPv-92, MLP 71-II-13-1 (postcranial skeletons)