Gypsum mine, ca. 2 km NE Santana do Cariri: Late Aptian, Brazil

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Testudines - Araripemydidae
1 specimen
DGM-DNPM 756-R; shell
see common names

Geography
Country:Brazil State/province:Ceará
Coordinates: 7.2° South, 39.7° West (view map)
Paleocoordinates:5.0° South, 2.6° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Early Cretaceous
10 m.y. bin: Cretaceous 2-3
Key time interval: Late Aptian
Age range of interval: 119.57 - 113.2 m.y. ago
Stratigraphy
Geological group:Santana Formation:Romualdo
Stratigraphic resolution:bed
Stratigraphy comments: The Romualdo Member of the Santana Formation lies between the Crato Member of the Santana Formation (below) and the Exu Formation, which overlies the Santana Formation. Both of the latter horizons are most likely Albian in age. This suggests an Albian age (early Cretaceous, ± 110 mya) for the Romualdo Member of the Santana Formation and for Araripemys (Maisey, 1990, 1991).
From Melo et al. 2020: In summary, this integrated study of foraminifera, ostracodes and other microfossil data from the Romualdo Formation indicates that the local Alagoas Stage (Ostracoda Zone RT-011) can now be constrained to the Aptian. Arai and Assine 2020 also support that the Romualdo Formation is entirely Aptian in age.
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: Divisao de Geologia e Mineralogia, Departamento Nacional de Producao Mineral, Rio de Janeiro, DGM-DNPM collection
Metadata
Also known as:Araripemys barretoi type locality
Database number:128565
Authorizer:R. Benson Enterer:R. Benson
Modifier:M. Carrano Research group:vertebrate
Created:2012-06-11 21:10:19 Last modified:2025-02-22 15:12:02
Access level:the public Released:2012-06-11 21:10:19
Creative Commons license:CC0
Reference information

Primary reference:
41978. P. A. Meylan. 1996. Skeletal morphology and relationships of the Early Cretaceous side-necked turtle, Araripemys barretoi (Testudines: Pelomedusoides: Araripemydidae), from the Santana Formation of Brazil. Journal of Vertebrate Paleontology 16(1):20-33 [R. Benson/R. Benson]