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
  -
Trilobita
 Phacopida - Calmoniidae
Metacryphaeus sp. Reed 1907 trilobite
Ostracoda
 Podocopida - Bairdiidae
? Bairdia sp. M'Coy 1844 ostracod
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
 Cyrtodontida - Cyrtodontidae
? Ptychodesma sp. Hall and Whitfield 1872 clam
 Cardiidia - Grammysiidae
? Grammysia sp. de Verneuil 1847 clam
 Protobranchia - Malletiidae
Nuculites sp. Conrad 1841 clam
? Palaeoneilo sp. Hall and Whitfield 1869 clam
Gastropoda
 Bellerophontida - Plectonotidae
Plectonotus sp. Clarke 1899 snail
Chondrichthyes
 Acanthodei - Acanthoessidae
? Machaeracanthus sp. Newberry 1857 shark
 Ctenacanthiformes - Ctenacanthidae
? Ctenacanthus sp. Agassiz 1837 elasmobranch
Hyolitha
 Hyolithida - Hyolithidae
"Hyolithes" sp. d'Eichwald 1840
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites sp. von Schlotheim 1820
Strophomenata
 Productida - Chonetidae
Rhynchonellata
 Terebratulida - Meganterididae
 Spiriferida -
"Spiriferacea indet." = Spiriferoidea
"Spiriferacea indet." = Spiriferoidea King 1846
 Rhynchonellida - Eatoniidae
Lingulata
 Lingulida - Lingulidae
? Lingula sp. BruguiƩre 1797
unclassified
  -
Plantae indet. Haeckel 1866
 Ichnofossils -
Nereites sp. MacLeay 1839