Jandaira Formation, Bed 14, Potiguar Basin (Cretaceous of Brazil)

Where: Brazil (5.8° S, 37.4° W: paleocoordinates 12.0° S, 13.4° W)

• coordinate estimated from map

When: Jandaira Formation, Turonian (93.9 - 89.8 Ma)

• age ranges from Lower Turonian to the Middle Campanian for this unit

Environment/lithology: lagoonal or restricted shallow subtidal; gypsiferous, calcareous claystone and shelly/skeletal, argillaceous grainstone

• carbonate and marine facies, also includes evaporites with primary and secondary gypsum layers, the section contains claystones, some with marly intercalations. This unit is a bioclastic muddy calcarenites

Size classes: macrofossils, mesofossils, microfossils

Primary reference: C. C. Lana and I. S. Carvalho. 2002. Cretaceous conchostracans from Potiguar Basin (northeas Brazin): relationships with West African conchostracan faunas and palaeoecological inferences. Cretaceous Research 23:351-362 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38891: authorized by John Alroy, entered by Erin Leckey on 13.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Crustacea
  -
Crustacea indet. BrĂ¼nnich 1772
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
"echinoid spines and plates"
Foraminferea
 Miliolida - Miliolidae
Pyrgo sp. Defrance 1824
 Miliolida - Hauerinidae
Triloculina sp. d'Orbigny 1826