Spiriferides, Ponta Grossa Fmn., Jaguariaiva Mbr., Parana Basin (Devonian of Brazil)

Where: Parana, Brazil (24.0° S, 50.0° W: paleocoordinates 77.7° S, 126.2° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Jaguariaiva Member (Ponta Grossa Formation), Emsian (407.6 - 393.3 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)..."

• member-level stratigraphic resolution

Environment/lithology: marine; silty, sandy shale and fine-grained sandstone

• Melo (ref. 9944): Ponta Grossa shale proper is transgressive; Tibaji and Sao Domingos probably regressive; uppermost Sao Domingos transgressive.
• [rough translation] "...consists predominantly of silty or sandy shales, and subsidiary fine sandstone"

Primary reference: R. G. de Carvalho. 1976. Esperiferideos da Bacia do Parana. Anais da Academia Brasileira de Ciencias 48(3):453-461 [M. Foote/M. Foote/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37074: authorized by Michael Foote, entered by Michael Foote on 02.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Spiriferida - Hysterolitidae
 Rhynchonellida - Leptocoeliidae