Arroyo de Las Pulgas-7 (Carboniferous to of Mexico)

Also known as API-7

Where: Oaxaca, Mexico (17.6° N, 97.1° W: paleocoordinates 15.7° S, 50.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Ixaltepec Formation, Morrowan to Morrowan (323.2 - 306.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, gray shale

• Dark gray shale, brown when weathered. Cross bedding in some strata. At 210 m above base of column

Size class: macrofossils

Primary reference: S. A. Quiroz-Barroso and M. Del Carmen Perrilliat. 1998. Pennsylvanian bivalves from the Ixaltepec formation, Mexico. Journal of Paleontology 72(6):1011-1024 [J. Alroy/C. Simpson/C. Simpson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 44305: authorized by John Alroy, entered by Carl Simpson on 08.09.2004, edited by Pedro Monarrez

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Trigoniida - Schizodidae
Schizodus cf. ulrichi
Schizodus cf. ulrichi Worthen 1890 clam
 Cardiida - Kalenteridae
Permophorus spinulosa, Permophorus cf. oblongus
Permophorus cf. oblongus Meek and Hayden 1872 clam
 Cardiidia - Grammysiidae
Ectogrammysia prolata
Ectogrammysia prolata Hoare 1993 clam
 Arcida - Parallelodontidae
Parallelodon tenuistriatus
Parallelodon tenuistriatus Meek and Worthen 1866 clam
 Pectinida - Aviculopectinidae
Aviculopecten "sp. B", Aviculopecten "sp. A", Aviculopecten "sp. C", Aviculopecten cf. basilicus
Aviculopecten "sp. B" M'Coy 1851 scallop
Aviculopecten "sp. A" M'Coy 1851 scallop
Aviculopecten "sp. C" M'Coy 1851 scallop
Aviculopecten cf. basilicus Newell 1938 scallop
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Brachiopoda
  -
Brachiopoda indet.
Brachiopoda indet. Cuvier 1805
Strophomenata
 Productida - Echinoconchidae
Karavankina cf. fasciata, Echinaria knighti
 Productida - Linoproductidae
Nuanducosia sulcata, Linoproductus platyumbonus, Linoproductus cf. prattenianus, Marginovatia cf. pumila, Marginovatia aureocollis, Cancrinella nunduva
Nuanducosia sulcata Torres-Martínez and Sour-Tovar 2012
Linoproductus cf. prattenianus Norwood and Pratten 1855
Marginovatia cf. pumila Gordon and Henry 1990
Marginovatia aureocollis Gordon and Henry 1990
Cancrinella nunduva Torres-Martínez and Sour-Tovar 2012