Late Emsian/Eifelian Loc. 19a of Melo: Picos region, Lower Pimenteira Formation (Devonian to of Brazil)

Where: Piaui, Brazil (7.0° S, 42.0° W: paleocoordinates 80.7° S, 4.6° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Pimenteira Formation, Emsian to Emsian (407.6 - 387.7 Ma)

• "Although the age of the [Pimenteira Fm.] is probably restricted to the Middle Devonian along the eastern outcrop belt [of which this locality is a part] its full range is Emsian through Famennian in the subsurface of central portions of the basin."

• member-level stratigraphic resolution

Environment/lithology: marine; sandstone and siltstone

• See lithology description.
• "The Pimenteira Fm. records the first widespread Devonian transgression over the Parnaiba Basin and conformably overlies the Itaim Mbr. It consists of interlayered sandstones and siltstones/shales mostly deposited as offshore bars or shelf sediments under the influence of storm generated waves and currents ("tempestites"), as indicated by the widespread development of large scale hummocky cross stratification throughout the section."

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 37126: authorized by Michael Foote, entered by Michael Foote on 03.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Gastropoda
 Bellerophontida - Plectonotidae
Plectonotus sp. Clarke 1899 snail
Bivalvia
 Cyrtodontida - Cyrtodontidae
? Ptychodesma sp. Hall and Whitfield 1872 clam
 Cardiidia - Grammysiidae
? Grammysia sp. de Verneuil 1847 clam
 Nuculanida - Cucullellidae
Nuculites sp. Conrad 1841 clam
 Nuculanida - Malletiidae
? Palaeoneilo sp. Hall and Whitfield 1869 clam
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites sp. von Schlotheim 1820
Strophomenata
 Strophomenida - Chonetidae
Rhynchonellata
 Rhynchonellida - Eatoniidae
 Spiriferida -
"Spiriferacea indet." = Spiriferoidea
"Spiriferacea indet." = Spiriferoidea King 1846
 Terebratulida - Meganterididae
Lingulata
 Lingulida - Lingulidae
? Lingula sp. BruguiƩre 1797
Hyolitha
 Hyolithida - Hyolithidae
"Hyolithes" sp. d'Eichwald 1840
Ostracoda
 Podocopida - Bairdiidae
? Bairdia sp. M'Coy 1844 ostracod
Trilobita
 Phacopida - Calmoniidae
Metacryphaeus sp. Reed 1907 trilobite
Chondrichthyes
  - Machaeracanthidae
? Machaeracanthus sp. Newberry 1857 spiny fish
 Ctenacanthiformes - Ctenacanthidae
? Ctenacanthus sp. Agassiz 1836 elasmobranch
 Life -
Nereites sp. MacLeay 1839