Palmeirais (PB 190) (Permian of Brazil)

Where: Brazil (5.5° S, 42.9° W: paleocoordinates 29.9° S, 12.3° W)

• coordinate estimated from map

When: Pedra de Fogo Formation, Cisuralian (298.9 - 273.0 Ma)

Environment/lithology: terrestrial; lithified, massive, brown mudstone and lithified, fine-grained sandstone

• "...where the new captorhinids were found, suggests a more terrestrial depositional environment in that area, with marginal lacustrine facies still present but with more floodplain and fluvial channel deposits than in the southern and western parts of the basin."
• The captorhinids from the quarry site PB190 were preserved in a massively-bedded light-brown mudstone containing randomly orientated claystone chips within the upper wavy-laminated part of the lacustrine facies. Further along strike, this facies displays sand-filled polygonal mudcracks associated with algal mounds and gypsum blade casts. In places, the fossiliferous interval has been incised by a series of 5–10 m wide channels filled with climbing ripple cross-laminated fine-grained sandstone.

Size class: macrofossils

Collection methods: All specimens were recovered at quarries along the PI-130 highway, where silicified claystone blocks are extracted for use as construction material in Teresina and neighbouring cities.

Primary reference: J. C. Cisneros, K. Angielczyk, C. F. Kammerer, R. M. H. Smith, J. Fröbisch, C. A. Marsicano, and M. Richter. 2020. Captorhinid reptiles from the lower Permian Pedra de Fogo Formation, Piauí, Brazil: the earliest herbivorous tetrapods in Gondwana. PeerJ 8:e8719 [B. Gee/B. Gee/B. Gee]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 218110: authorized by Bryan Gee, entered by Bryan Gee on 18.02.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Osteichthyes
 Osteichthyes -
Osteichthyes indet.
Osteichthyes indet. Huxley 1880 bony fish
Uncatalogued 'fish hash' (disarticulated scales, teeth, elements)
Reptilia
 Eureptilia - Captorhinidae
Captorhinikos sp.
Captorhinikos sp. Olson 1954 eureptile
MAP PV855 (right dentary)