Arroyo de Las Pulgas-2 (Carboniferous to of Mexico)

Also known as API-2

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)

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified shale and lithified limestone

• Bright shale, interbedded with massive limestone. At 70m above base of column. Fossils: Bryozoans, corals, brachiopods, bivalves, and conulariids

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 43452: authorized by John Alroy, entered by Carl Simpson on 13.08.2004, edited by Pedro Monarrez

Creative Commons license: CC BY (attribution)

Taxonomic list

• Fossils: Bryozoans, corals, brachiopods, bivalves, and conulariids
Bivalvia
 Ostreida - Pterineidae
 Pectinida - Limipectinidae
Limipecten cf. texanus Girty 1904 scallop
 Pectinida - Euchondriidae
Euchondria cf. levicula Newell 1938 scallop
 Myalinida - Myalinidae
"Myalinella mieeki" = Myalina (Myalinella)
"Myalinella mieeki" = Myalina (Myalinella) clam
 Cardiidia - Grammysiidae
Ectogrammysia prolata Hoare 1993 clam
 Carditida - Astartidae
Astartella concentrica Conrad 1842 clam
Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
Strophomenata
 Productida - Aulostegidae
? Sinuatella sp. Muir-Wood 1928
Stated as Chesterian in age
 Productida - Linoproductidae
Marginovatia minor Gordon and Henry 1990
Stated as Chesterian in age
 Productida - Monticuliferidae
Ovatia muralis
Stated as Chesterian in age
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Scyphozoa
 Conulariida -
Conulariida indet. Miller and Gurley 1896 jellyfish
Anthozoa
  -
Anthozoa indet. Ehrenberg 1834