Late Eifelian/Give. Loc. 21 of Melo: Picos region (Devonian to of Brazil)

Where: Piaui, Brazil (7.0° S, 42.0° W: paleocoordinates 75.3° S, 6.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Cabecas 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.

• 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 restricted to its lower section (Passagem Member), as mostly associated to storm beds."

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

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Calmoniidae
Metacryphaeus sp. Reed 1907 trilobite
 Xiphosurida -
Eurypterida indet. Burmeister 1843 eurypterid
 Cardiidia - Grammysiidae
Cimitaria sp. Hall and Whitfield 1869 clam
? Grammysioidea sp. Williams 1916 clam
 Nuculida - Nuculidae
Nuculoidea sp. Williams and Berger 1916 nut clam
 Protobranchia - Malletiidae
Nuculites sp. Conrad 1841 clam
Palaeoneilo sp. Hall and Whitfield 1869 clam
 Euomphalina - Platyceratidae
 Bellerophontida - Plectonotidae
Plectonotus sp. Clarke 1899 snail
 Orthocerida - Orthoceratidae
? Michelinoceras sp. Foerste 1932
Crinoidea indet. Miller 1821 Sea lily
 Tentaculitida - Tentaculitidae
Tentaculites sp. von Schlotheim 1820
 Productida -
"Chonetacea "gen.nov. C"" = Chonetoidea, "Chonetacea indet." = Chonetoidea
"Chonetacea "gen.nov. C"" = Chonetoidea Bronn 1862
"Chonetacea indet." = Chonetoidea Bronn 1862
"various definite species"
 Terebratulida -
Terebratulida indet. Waagen 1883
"Rhipidothyrididae or Mutationellidae indet. D"
 Terebratulida - Meganterididae
 Terebratulida - Rhipidiothyrididae
 Spiriferida -
"Spiriferacea indet." = Spiriferoidea
"Spiriferacea indet." = Spiriferoidea King 1846
 Spiriferida - Mucrospiriferidae
? Mucrospirifer sp. Grabau 1931
"mostly 'Spirifer' pedroanus Rathbun, 1874 and related forms"
 Spiriferida -
? Pustulatia sp. Cooper 1956
  - Tropidoleptidae
Plantae indet. Haeckel 1866
 Ichnofossils -
Gyrophyllites sp. Glocker 1841
Cruziana sp. d'Orbigny 1842
Rusophycus sp. Hall 1852