Late Emsian/Eifelian Loc. 25 of Melo: Maecuru River (Devonian of Brazil)

Where: Para, Brazil (2.0° S, 54.0° W: paleocoordinates 68.9° S, 29.4° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Alpenachitina eisenacki other zone, Lontra Member (Maecuru Formation), Eifelian (393.3 - 387.7 Ma)

• Member spans Emsian - Eifelian, but the dense beds of shelly fossils are from the top of the formation (Grahn 2005).

• member-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."

Size class: macrofossils

Preservation: cast

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 37137: authorized by Michael Foote, entered by Michael Foote on 03.03.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Favositida - Micheliniidae
Pleurodictyum sp.
Pleurodictyum sp. Goldfuss 1829 tabulate coral
Pteraspidomorpha
 Pteraspidiformes -
? Pteraspis sp.
? Pteraspis sp. Kner 1847
Chondrichthyes
  - Machaeracanthidae
? Machaeracanthus sp.
? Machaeracanthus sp. Newberry 1857 spiny fish
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
 Monobathrida - Melocrinitidae
? Ctenocrinus sp.
? Ctenocrinus sp. Bronn 1840 Sea lily
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites sp.
Tentaculites sp. von Schlotheim 1820
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Rhynchonellata
 Spiriferida - Acrospiriferidae
Acrospirifer sp.
Acrospirifer sp. Wedekind 1926
 Spiriferida - Mucrospiriferidae
? Mucrospirifer sp.
? Mucrospirifer sp. Grabau 1931
"mostly 'Spirifer' pedroanus Rathbun 1874 and related forms"
 Spiriferida - Ambocoeliidae
Plicoplasia sp.
 Spiriferida -
"Spiriferacea indet." = Spiriferoidea
"Spiriferacea indet." = Spiriferoidea King 1846
"various definite species"
  - Tropidoleptidae
Tropidoleptus sp.
 Orthida - Rhipidomellidae
Discomyorthis sp.
Discomyorthis sp. Johnson 1970
 Orthida - Platyorthidae
Platyorthis sp.
 Terebratulida - Meganterididae
"? Paranaia sp." = Derbyina, ? Podolella sp.
"? Paranaia sp." = Derbyina
? Podolella sp.
"possibly Cranaena"
 Terebratulida - Centronellidae
Amphigenia sp.
 Spiriferinida - Cyrtinidae
? Cyrtina sp.
? Cyrtina sp. Davidson 1858
 Rhynchonellida - Leptocoeliidae
? Leptocoelia sp.
 Rhynchonellida - Camarotoechiidae
? Camarotoechia sp.
? Camarotoechia sp. Hall and Clarke 1893
 Rhynchonellida - Rhynchonellidae
"Rhynchonella" sp.
"Rhynchonella" sp. Fischer 1809
Strophomenata
 Productida - Productellidae
Productella sp.
 Strophomenida -
"Chonetacea "gen.nov. A"" = Chonetoidea, "Chonetacea indet." = Chonetoidea
"Chonetacea "gen.nov. A"" = Chonetoidea Bronn 1862
"Chonetacea indet." = Chonetoidea Bronn 1862
"various definite species"
 Strophomenida - Anopliidae
Anoplia sp.
 Strophomenida - Strophodontidae
""Stropheodonta" sp." = Strophomena (Strophodonta), Megastrophia sp.
""Stropheodonta" sp." = Strophomena (Strophodonta) Hall 1852
Megastrophia sp. Caster 1939
 Strophomenida - Leptostrophiidae
Protoleptostrophia sp.
 Orthotetida - Schuchertellidae
"Schuchertella" sp.
Polychaeta
 Serpulimorpha -
? Hicetes sp.
Tentaculita
 Styliolinida - Styliolinidae
Styliolina sp.
Styliolina sp. Karpinsky 1884
Bivalvia
 Ostreida - Pterineidae
Leptodesma (Leiopteria) sp., "Ptychopteria (Actinopteria) sp." = Actinopteria
"Ptychopteria (Actinopteria) sp." = Actinopteria Hall 1884 oyster
 Pectinida - Pterinopectinidae
Pseudaviculopecten sp.
Pseudaviculopecten sp. Newell 1938 scallop
 Cardiida -
? Cypricardella sp.
? Cypricardella sp. Hall 1856 clam
 Modiomorphida - Modiomorphidae
? Guerangeria sp., Modiomorpha sp.
? Guerangeria sp. Oehlert 1880 clam
Modiomorpha sp. Hall and Whitfield 1869 clam
 Cardiidia - Grammysiidae
? Grammysioidea sp., Cimitaria sp., "Sphenotus" sp., Grammysia sp.
? Grammysioidea sp. Williams 1916 clam
Cimitaria sp. Hall and Whitfield 1869 clam
"Sphenotus" sp. Hall 1884 clam
Grammysia sp. de Verneuil 1847 clam
 Trigoniida - Myophoriidae
Toechomya sp.
 Nuculanida - Malletiidae
Palaeoneilo sp.
Palaeoneilo sp. Hall and Whitfield 1869 clam
 Nuculanida - Cucullellidae
Nuculites sp.
Nuculites sp. Conrad 1841 clam
 Nuculida - Nuculidae
Nuculoidea sp.
Nuculoidea sp. Williams and Berger 1916 nut clam
Gastropoda
 Bellerophontida -
Bellerophontoidea indet.
Bellerophontoidea indet. M'Coy 1851 snail
 Bellerophontida - Bucanellidae
? Bucanella sp.
? Bucanella sp. Meek 1871 snail
 Bellerophontida - Bucaniidae
"Bucania" sp.
"Bucania" sp. Hall 1847 snail
 Bellerophontida - Plectonotidae
Ptomatis sp., Plectonotus sp.
Ptomatis sp. Clarke 1899 snail
Plectonotus sp. Clarke 1899 snail
 Euomphalina - Platyceratidae
"Platyceras (Platyostoma) sp." = Platyostoma, Platyceras (Platyceras) sp.
"Platyceras (Platyostoma) sp." = Platyostoma Conrad 1842 snail
Platyceras (Platyceras) sp. Conrad 1840 snail
Trilobita
  -
Trilobita indet.
Trilobita indet. Walch 1771 trilobite
"Clarke's (1890) 'Acidaspis? or Ceraurus?' "
 Phacopida -
Phacopida indet.
Phacopida indet. Salter 1864 trilobite
 Phacopida - Dalmanitidae
"Dalmanites" sp.
"Dalmanites" sp. Barrande 1852 trilobite
" 'Dalmanites' (gen.indet., cf. Odontochile or Gamonedaspis)"
 Phacopida - Homalonotidae
? Trimerus sp.
? Trimerus sp. Green 1832 trilobite