Inhamandá 1 (Triassic to of Brazil)

Where: Rio Grande do Sul, Brazil (29.6° S, 54.1° W: paleocoordinates 39.8° S, 16.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Hyperodapedon other zone, Alemoa Member (Santa Maria Formation), Carnian to Carnian (237.0 - 208.5 Ma)

• Santa Maria 2 (upper half of Santa Maria Formation), from the so-called "Rhynchosaur Cenozone" or "Hyperodapedon Assemblage Zone". The Hyperodapedon Assemblage Zone has generally considered been late Carnian in age, but could extend into the early Norian.

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; red mudstone and fine-grained, red sandstone

• "Mudstones intercalated with fine-grained sandstone layers are the commonest facies of the Santa Maria Formation, and were deposited in the floodplains of a braided fluvial system, under a semi-arid climate" (Langer & Schultz 2000)

Size class: macrofossils

Collection methods: quarrying,

• CPE2, Coleção Municipal, São Pedro do Sul, Brazil.

•UFRGS, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.

Primary reference: A. B. Heckert and S. G. Lucas. 2002. South American occurrences of the Adamanian (Late Triassic: latest Carnian) index taxon Stagonolepis (Archosauria: Aetosauria) and their biochronological significance. Journal of Paleontology 76(5):852-863 [R. Butler/R. Butler]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 92319: authorized by Richard Butler, entered by Richard Butler on 06.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Rhynchosauria - Rhynchosauridae
Hyperodapedon mariensis3 Tupi-Caldas 1933 rhynchosaur
Hyperodapedon huenei n. sp.3 Langer and Schultz 2000 rhynchosaur
UFRGS PV 0132T, a nearly complete skull and mandible (holotype). UFRGS PV 0413T, juvenile dentary
 Pseudosuchia -
Aetosauroides scagliai1 Casamiquela 1960 aetosaur
MCP 13a, 13b, parts of the dorsal and ventral carapace, probably of a single individual. "Aetosauroides subsulcatus"
 Pseudosuchia - Stagonolepididae
Aetobarbakinoides brasiliensis n. gen. n. sp.2 Desojo et al. 2012 aetosaur
CPE2 168, partial postcranium