Late Emsian/Eifelian Loc. 24 of Melo: Cajari River, station JWB250-AP (Devonian to of Brazil)

Where: Amapa, Brazil (0.5° S, 52.0° W: paleocoordinates 71.0° S, 25.8° W)

• coordinate estimated from map

• local area-level geographic resolution

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

• formation-level stratigraphic resolution

Environment/lithology: marine; sandstone and bioturbated siltstone

• Deposition reflects deepening. See lithology description.
• "The Maecuru Fm. of Emsian/Eifelian age is composed by the Jatapu and Lontra members...Jatapu [consists of] bioturbated silty/shaly layers and argillaceous sandstones...Fluvial sandstones and conglomerates are the main constituents of the Lontra unit. However, locally on the N flank and throughout the subsurface the uppermost Lontra sediments are shallow marine "tempestites", i.e. hummocky cross-stratified sandstones containing the well known Devonian invertebrate fauna recorded by pioneer workers from outcrops of the Maecuru and Curua rivers."

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 37136: authorized by Michael Foote, entered by Michael Foote on 03.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita indet. Walch 1771 trilobite
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
 Ostreida - Pterineidae
"Ptychopteria (Actinopteria) sp." = Actinopteria
"Ptychopteria (Actinopteria) sp." = Actinopteria Hall 1884 oyster
Crinoidea indet. Miller 1821 Sea lily
 Tentaculitida - Tentaculitidae
Tentaculites sp. von Schlotheim 1820
 Productida -
"Chonetacea "gen.nov. A"" = Chonetoidea
"Chonetacea "gen.nov. A"" = Chonetoidea Bronn 1862
 Orthotetida - Schuchertellidae
 Strophomenida - Leptostrophiidae
 Terebratulida - Meganterididae
? Podolella sp.
"possibly Cranaena"
 Spiriferida - Ambocoeliidae
 Spiriferida - Acrospiriferidae
? Acrospirifer sp. Wedekind 1926
  - Tropidoleptidae