Campo da Pedra (Triassic to of Brazil)

Also known as holotype site of Procolophon pricei; Dilermando de Aguiar; Catuçaba, Catucaba

Where: Rio Grande do Sul, Brazil (29.8° S, 54.2° W: paleocoordinates 49.3° S, 23.6° W)

• coordinate stated in text

• local area-level geographic resolution

When: Sanga do Cabral Formation (Rosario do Sul Group), Induan to Induan (252.2 - 247.2 Ma)

• The Sanga do Cabral Fm. is correlated with the "impoverished zone" (Procolophon subzone) of the Lystrosaurus Assemblage Zone of the Main Karoo Basin of South Africa by some authors on the basis of the abundant records of Procolophon, i.e., it is Upper Induan to Lower Olenekian in age (see Dias-da-Silva et al., 2006, Can. J. Earth Sci. and references therein). However, Langer et al. (2007; New Mexico Mus. Nat. Hist. Sci. Bull. 41) pointed out that the prevalence of Procolophon in the Brazilian sequence might represent a taphonomic bias, and that only an undifferentiated Lower Triassic age is currently possible.

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; poorly lithified conglomerate

• The deposits represented by the Sanga do Cabral Fm. "are interpreted as being deposited by braided river systems which poorly confined channels that developed on a low-gradient alluvial plain." (Dias-da-Silva et al., 2006, Can. J. Earth Sci. 43(11)).
• Intraformational conglomerate with fine-grained, weakly cemented matrix (Lavina, 1983).

Size class: macrofossils

Preservation: permineralized

Collected by V. Ochagavia da Costa, D. Cargnin in 1980, 1981

Collection methods: mechanical

• UFRGS PV = vertebrate paleontology collections of the Universidade Federal do Rio Grande do Sul, Porto Alegre

Primary reference: E. L. Lavina. 1983. Procolophon pricei sp. n., um novo réptil procolofonídeo do Triássico do Rio Grande do Sul. Iheringia, Série Geologia 9:51-78 [J. Mueller/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 94112: authorized by Johannes Mueller, entered by Torsten Liebrecht on 09.02.2010, edited by Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

• Dias-da-Silva et al. (2005) did not specify the localities for their rhytidosteid temnospondyl material, but Langer et al. (2007) indicated that at least some of it was from the Catucaba locality
 Temnospondyli - Rhytidosteidae
Rhytidosteidae indet.2 Huene 1920 tetrapod
UFRGS PV, cranial fragments
 Procolophonia - Procolophonidae
"Procolophon pricei n. sp." = Procolophon trigoniceps
"Procolophon pricei n. sp." = Procolophon trigoniceps Owen 1876 parareptile
UFRGS PV 0231 T (type), 0233 T, 0234 T, 0235 T
 Eosuchia -
Prolacertiformes indet.3 Camp 1945 archosauromorph
 Therapsida -
Cynodontia indet.1 therapsid
UFRGS PV 351-354 T, femoral and humeral fragments