Jandaira Formation, Bed 5, 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)

• from the lower sectoin, age ranges from Lower Turonian to the Middle Campanian for this unit, bed studied at the bottom of bed 5

Environment/lithology: lagoonal or restricted shallow subtidal; gypsiferous, calcareous claystone and green, calcareous shale

• lagoonal evaporitic
• carbonate and marine facies, also includes evaporites with primary and secondary gypsum layers, the section contains claystones, some with marly intercalations

Size class: 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 38890: authorized by John Alroy, entered by Erin Leckey on 13.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Foraminifera -
Foraminifera indet. foram
planispiral and trochospiral morphotypes
Branchiopoda
 Limnadioidea - Limnadiidae
Chlorophyceae
  -
Pediastrum sp. Meyen 1829
Magnoliopsida
 Magnoliales - Trimeniaceae
Cretacaeiporites mulleri Herngreen 1973