Vargas Pena clay pit, Vargas Pena Shale, Paraguay (Silurian of Paraguay)

Where: Paraguay (25.4° S, 57.3° W: paleocoordinates 44.8° S, 142.4° W)

• coordinate based on nearby landmark

When: Vargas Pena Shale Formation, Llandovery (443.4 - 433.4 Ma)

• Age of the formation has been disputed but new biostrat info from organic walled microfossils gives age of early Silurian (Llandoverian).

Environment/lithology: marine; burrowed shale

• no environment info given. "orange/purple/brown fossiliferous shale."

Primary reference: L. E. Babcock, J. Gray, A. J. Boucot, G. T. Himes, and P. K. Siegele. 1990. First Silurian conulariids from Paraguay. Journal of Paleontology 64(6):897-902 [J. Alroy/M. Sommers/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 908: authorized by John Alroy, entered by Mike Sommers on 09.03.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Conulariids primarily, some vague other taxa given, also listed are "trace fossils."
Show authors, comments, and common names
Brachiopoda
  -
Brachiopoda indet.
Brachiopoda indet. Cuvier 1805
articulate brachiopods
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
loxonematid gastropod
 Bellerophontida - Bellerophontidae
Bellerophontidae indet.
Bellerophontidae indet. M'Coy 1851 snail
plectonotid bellerophontid
unclassified
  -
? Arthropoda indet.
? Arthropoda indet. Latreille 1829
possible arthropod - originally entered as "? Arthropoda indet."
Scyphozoa
 Conulariida - Conulariidae
Conularia paraguayensis, Conularia clarkei