Yaminue Creek, Cerro Blanco (mudstone): Late/Upper Campanian - Early/Lower Maastrichtian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Reptilia indet. Laurenti 1768
Berbach and Manera 2012 46 specimens
conical teeth
Hadrosauroidea indet. Huene 1954
Berbach and Manera 2012 1 specimen
vertebral centrum
Titanosauria indet. Bonaparte and Coria 1993
Berbach and Manera 2012 2 specimens
caudal centrum, dermal plate
Reptilia - Plesiosauria
Plesiosauroidea indet. Welles 1943
Berbach and Manera 2012 5 specimens
vertebral centra
Reptilia - Testudines - Chelidae
Chelidae indet. Gray 1825
de Broin and de la Fuente 1993 204 specimens
shell fragments from at least three indetermed chelids
Yaminuechelys gasparinii n. gen., n. sp. de la Fuente et al. 2001
1 individual
almost complete specimen
Dipnoi
Dipnoi indet. (Müller 1884)
Berbach and Manera 2012 33 specimens
tooth plates
Actinopteri
Teleostei indet. (Müller 1846)
Berbach and Manera 2012 182 specimens
vertebral centra
Actinopteri - Siluriformes
Siluriformes indet.
Berbach and Manera 2012
3 basioccipitals, fragments of spines, cleithrum
Actinopteri - Siluriformes - Diplomystidae
Diplomystidae indet. Eigenman 1890
Berbach and Manera 2012 1 specimen
spine fragment
Actinopteri - Aspidorhynchiformes - Aspidorhynchidae
Aspidorhynchidae indet. Bleeker 1859
Berbach and Manera 2012 14 specimens
scales
Belonostomus cf. longirostris (Lambe 1902)
Berbach and Manera 2012 9 specimens
fragments of premaxillae and dentary
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteidae indet. Cuvier 1825
Berbach and Manera 2012 22 specimens
teeth and scales
Chondrichthyes
Chondrichthyes indet. Huxley 1880
Berbach and Manera 2012 216 specimens
vertebral centra
Chondrichthyes - Rajiformes
Rajiformes indet. Berg 1940
Berbach and Manera 2012 44 specimens
teeth of two morphotypes
see common names

Geography
Country:Argentina State/province:Río Negro
Coordinates: 40.7° South, 67.2° West (view map)
Paleocoordinates:43.5° South, 53.0° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Key time interval:Late/Upper Campanian - Early/Lower Maastrichtian
Age range of interval:83.60000 - 66.00000 m.y. ago
Stratigraphy
Geological group:Malargüe Formation:Allen Member:Middle
Stratigraphic resolution:bed
Stratigraphy comments: "The sediments are compared to those from the Pellegrini lake area referred to the middle member of the Allen Formation."
Lithology and environment
Primary lithology: mudstone
Secondary lithology:fine sandstone
Includes fossils?Y
Lithology description: turtle was found n a mudstone level belonging to a succession of mudstones and sandstones named as lacustrine
Environment:lacustrine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Associated major elements:all
Fragmentation:occasional
Temporal resolution:snapshot
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: Museo Municipal de Ciencias Naturales "Carlos Darwin" of the city of Punta Alta, Buenos Aires Province MPA 86-86-1C
Metadata
Database number:37039
Authorizer:J. Alroy, R. Benson, M. Carrano Enterer:E. Leckey, M. Carrano, R. Benson
Modifier:M. Carrano Research group:vertebrate
Created:2004-02-24 14:26:51 Last modified:2021-04-12 19:33:01
Access level:the public Released:2004-02-24 14:26:51
Creative Commons license:CC BY
Reference information

Primary reference:
9919. M. de la Fuente, F. de Lapparent de Broin, and T. M. Bianco. 2001. The oldest and first nearly complete skeleton of a chelid, of the Hydromedusa sub-group (Chelidae, Pleurodira), from the Upper Cretaceous of Patagonia. Bulletin de la Société Géologique de France 172(2):237-244 [J. Alroy/E. Leckey/M. Carrano]

Secondary references:

76381 L. Berbach and T. Manera. 2012. Vertebrados cretácicos del Cerro Blanco, Yaminué, provincia de Río Negro, Argentina [Cretaceous vertebrates from Cerro Blanco, Yaminué, Río Negro province, Argentina]. XXVI Jornadas Argentinas de Paleontología de Vertebrados. I Jornadas Argentinas Técnicas en Paleontología de Vertebrados. Resúmenes. Ameghiniana 49(4 (suppl.)):R43 [M. Carrano/M. Carrano/M. Carrano]
42415 F. de Broin and M. de la Fuente. 1993. Les tortues fossiles d'Argentine: synthese [The fossil turtles of Argentina: synthesis]. Annales de Paléontologie (Invertebrés-Vertebrés) 79(3):169-232 [R. Benson/R. Benson/M. Carrano]