Road BR 316, km 305, near Picos (Devonian to of Brazil)

Also known as Late Eifelian/Give. Loc. 21 of Melo: Picos region

Where: Piaui, Brazil (7.1° S, 41.7° W)

• Paleocoordinates: 67.7° S, 17.3° W (Wright 2013)

• coordinate estimated from map

• local area-level geographic resolution

When: Pimenteira Formation, Eifelian to Eifelian (393.3 - 382.7 Ma)

• Collection not explicitly said to come from Cabecas Fmn., but this seems rather clear from stratigraphic and geographic context. PJW: Caputo & dos Santos (2020) note that this is now Pimenteira formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; sandstone

• See lithology description.
• "The Cabecas Formation is a thick, progradational sandy unit resembling the Chapada unit no. 3 of the Parana Basin due to its massive appearance and monotonous development of sigmoidal lobes. It often displays synsedimentary slumping structures and is locally cut through by wide, shallow channels. The fairly abundant marine fauna...is restricted to its lower section (Passagem Member), as mostly associated to storm beds."

Size class: macrofossils

Primary reference: J. H. G. Melo. 1988. The Malvinokaffric realm in the Devonian of Brazil. N. J. McMillan, A. F. Embry, and D. J. Glass, eds. Devonian of the World, Volume I. Canadian Society of Petroleum Geologists. Calgary, Alberta, Canada 669-703 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 37170: authorized by Michael Foote, entered by Michael Foote on 03.03.2004, edited by Pete Wagner

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Eurypterida
 Eurypterida -
Eurypterida indet.
Eurypterida indet. Burmeister 1843 eurypterid
Trilobita
 Phacopida - Calmoniidae
Metacryphaeus meloi
Metacryphaeus meloi Carvalho et al. 1997 trilobite
Gastropoda
 Bellerophontida - Plectonotidae
Plectonotus sp.
Plectonotus sp. Clarke 1899 snail
 Euomphalina - Platyceratidae
"Platyceras (Platyostoma) sp." = Platyostoma
"Platyceras (Platyostoma) sp." = Platyostoma Conrad 1842 snail
Bivalvia
 Cardiidia - Grammysiidae
Cimitaria sp., ? Grammysioidea sp.
Cimitaria sp. Hall and Whitfield 1869 clam
? Grammysioidea sp. Williams 1916 clam
 Nuculida - Nuculidae
Nuculoidea sp.
Nuculoidea sp. Williams and Berger 1916 nut clam
 Nuculanida - Cucullellidae
Nuculites sp.
Nuculites sp. Conrad 1841 clam
 Nuculanida - Malletiidae
Palaeoneilo sp.
Palaeoneilo sp. Hall and Whitfield 1869 clam
Cephalopoda
 Orthocerida - Orthoceratidae
? Michelinoceras sp.
? Michelinoceras sp. Foerste 1932
Rhynchonellata
 Spiriferida -
"Spiriferacea indet." = Spiriferoidea
"Spiriferacea indet." = Spiriferoidea King 1846
 Spiriferida - Mucrospiriferidae
? Mucrospirifer sp.
? Mucrospirifer sp. Grabau 1931
"mostly 'Spirifer' pedroanus Rathbun, 1874 and related forms"
 Spiriferida -
? Pustulatia sp.
? Pustulatia sp. Cooper 1956
  - Tropidoleptidae
Tropidoleptus sp.
 Terebratulida -
Terebratulida indet.
Terebratulida indet. Waagen 1883
"Rhipidothyrididae or Mutationellidae indet. D"
 Terebratulida - Rhipidiothyrididae
Rhipidothyris sp.
 Terebratulida - Meganterididae
Mutationellinae "indet. D"
Strophomenata
 Strophomenida -
"Chonetacea "gen.nov. C"" = Chonetoidea, "Chonetacea indet." = Chonetoidea
"Chonetacea "gen.nov. C"" = Chonetoidea Bronn 1862
"Chonetacea indet." = Chonetoidea Bronn 1862
"various definite species"
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites sp.
Tentaculites sp. von Schlotheim 1820
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
unclassified
  -
Plantae indet.
Plantae indet. Haeckel 1866
 Ichnofossils -
Gyrophyllites sp., Cruziana sp., Rusophycus sp.
Gyrophyllites sp. Glocker 1841
Cruziana sp. d'Orbigny 1842
Rusophycus sp. Hall 1852