Posto Queimado (Permian to of Brazil)

Also known as Paraná Basin

Where: Rio Grande do Sul, Brazil (30.0° S, 54.2° W: paleocoordinates 46.3° S, 28.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Morro Pelado Member (Rio do Rasto Formation), Wordian to Wordian (268.8 - 259.9 Ma)

• The beds from which vertebrates come are correlated with the Tapinocephalus Assemblage Zone (Karroo) and the Isheevo Complex (Russia), which are Capitanian or Wordian to Capitanian in age (Cisneros et al. 2005, fig. 6; Tsuji & Müller, 2008, Can. J. Earth Sci. 45, fig. 2). For discussion see Cisneros et al. (2005, p. 21).

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; claystone and conglomerate

• The depositional environment of the Morro Pelado Member has been interpreted as meandering fluvial to lacustrine, deltaic and aeolian (Rohn 1994), Holz et al. (2010a) suggesting alluvial conditions with coalescing flood plains, including crevasse splay deposits and inundites of occasional shallow river channels.
• "The rocks outcropping at the Posto Queimado locality belong to the Morro Pelado Member, and are characterized by a sequence of pelites, interspersed with clay lenses, sand and intraformational conglomerates." Pacheco et al. 2016

Size class: macrofossils

Primary reference: J. C. Cisneros, F. Abdala, and M.C. Malabarba. 2005. Pareiasaurids from the Rio do Rasto Formation, Southern Brazil: biostratigraphic implications for Permian faunas of the Paraná basin. Revista Brasileira de Paleontologia 8(1):13-24 [J. Mueller/J. Dummasch]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78657: authorized by Johannes Mueller, entered by Jana Dummasch on 13.02.2008, edited by Torsten Liebrecht and Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes -
Hybodontoidea indet.3 Agassiz 1834 elasmobranch
MCP 4274-PV
Osteichthyes
 Actinopterygii -
Actinopterygii indet.2 Cope 1887 ray-finned fish
 Dipnoi - Gnathorhizidae
cf. Gnathorhizidae indet.2 Miles 1977 lungfish
 Tetrapoda -
Tetrapoda indet. Jaekel 1911 tetrapod
"aquatic amphibian"; specimen (humerus) formerly assigned to Provelosaurus americanus (see Malabarba et al., 2003, Rev. Bras. Paleont. 6)
Amphibia
 Temnospondyli -
Temnospondyli indet.3 tetrapod
MCP 4275-PV, an incomplete right mandibular ramus
Osteichthyes
 Therapsida - Titanosuchidae
Titanosuchidae indet.2 Broom 1903 therapsid
MCP 3838-PV, tooth
 Therapsida -
Tapinocephalia indet.1 therapsid
MCN PV 2351
 Therapsida - Tapinocephalidae
Tapinocephalidae indet.1 Owen 1876 therapsid
MCP 4266-PV
 Therapsida - Anteosauridae
Anteosauridae indet.1 Boonstra 1954 therapsid
UFRGS PV0249T, tooth
Anteosauridae indet.1 Boonstra 1954 therapsid
UFRGS PV0314T, tooth
Reptilia
 Procolophonomorpha - Pareiasauridae
Provelosaurus americanus3 Araújo 1985 parareptile
MCP 4263PV