Where: Para, Brazil (1.0° S, 48.0° W: paleocoordinates 1.0° S, 43.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Estacao Limestone Member (Pirabas Formation), Early/Lower Miocene (23.0 - 16.0 Ma)
• Collection from "bed 8" within the limestone unit. No description of the section is given so this collection cannot be placed in a stratigraphic framework. Fauna not very much like that of the Rio Pirabas outcrop, although many species are in common. Molluscan fauna indicate a Lower Miocene age. The deposit is stratigraphically near to the Pirabas Formation, but paleontological evidence is insufficient for an exact correlation. Maury (1924) suggested that it could be synchronous, slightly younger or slightly older. No specimens of Orthaulax have been ound in the fauna, suggesting a younger age, perhaps equivalent to the Gatun Fm. Simone (1994) does not illustrate any other Miocene units in the Parnaiba Basin other than the Pirabas Formation, for which I conclude the Estacao Limestone must now be considered a member of. The Pirabas Fm has a latest Late Oligocene to Middle Miocene age according text. Early Miocene in Vokes (1990), and is accordingly assigned to Early Miocene here.
• bed-level stratigraphic resolution
Environment/lithology: lithified, fine-grained, shelly/skeletal, gray, calcareous limestone
Size class: macrofossils
Preservation: cast, mold/impression
Collection methods: quarrying,
• Artificial casts of the external molds were made. Collected by F. de Carvalho and Dr. Gonzaga for G. de Campos of the Brazil Geological Survey. Types are reposited at the Museum of the Brazil Geological Survey.
Primary reference: C. J. Maury. 1924. Fosseis Terciarios Do Brazil. Servico Geologico E Mineralogico Do Brazil Monographia 49 [A. Miller/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 60984: authorized by Austin Hendy, entered by Austin Hendy on 28.05.2006
Creative Commons license: CC BY (attribution)