Bivalves, Ponta Grossa Fmn., Sao Domingos Mbr., at Ponta Grossa (Devonian to of Brazil)

Where: Brazil (25.1° S, 50.2° W: paleocoordinates 84.7° S, 102.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Sao Domingos Member (Ponta Grossa Formation), Eifelian to Eifelian (393.3 - 372.2 Ma)

• Members of Ponta Grossa Fm., from bottom to top, are Jaguariaiva, Tibagi, and Sao Domingos.

•Melo (ref. 9944) restricts the name "Ponta Grossa" to "the lower, richly fossiliferous transgressive shaly section of the Devonian in the Apucarana Sub-basin, the name Jaguariaiva being regarded as a junior synonym...The Ponta Grossa and Sao Domingos shales are interpreted to be units of equal lithostratigraphic rank...The Tibaji "Sandstone" (in fact more silty than sandy) should be kept as a subordinate unit of the Ponta Grossa shale due to its restricted distribution...The Ponta Grossa Shale is well known for its abundant marine invertebrate fauna of Emsian/early Eifelian age, first described by Clarke (1913)..." Melo seems to restrict this member to Givetian-Frasnian in age.

• member-level stratigraphic resolution

Environment/lithology: marine; shale

• Melo (ref. 9944): Ponta Grossa shale proper is transgressive; Tibaji and Sao Domingos probably regressive; uppermost Sao Domingos transgressive.

Primary reference: S. M. Morsch. 1986. Bivalves (Mollusca) na Formacao Ponta Grossa (Bacia do Parana - Devoniano). Revisao Sistematica. Anais da Academia Brasileira de Ciencias 58(3):403-431 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37073: authorized by Michael Foote, entered by Michael Foote on 02.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Carditida - Crassatellidae
 Cardiidia - Grammysiidae
 Modiomorphida - Modiomorphidae
 Solenida - Orthonotidae
 Pholadomyida -
 Protobranchia - Solemyidae
"Solemya (? Janeia) brasiliensis" = Janeia
"Solemya (? Janeia) brasiliensis" = Janeia Awning Clam
 Protobranchia - Malletiidae
 Protobranchia - Nuculanidae
? Nuculana viator pointed nut clam