Southern cliffs: Oligocene - Miocene, Argentina
collected by A. L. Cione, E. Tonnin, R. Brunet, and R. Taylor

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Actinopteri - Labriformes - Labridae
Labrodon sp. Gervais 1857
Tetraodontiformes - Molidae
Chondrichthyes - Myliobatiformes
Chondrichthyes - Echinorhiniformes - Echinorhinidae
Chondrichthyes - Squatinidae
Squatina sp. Dumeril 1806
Chondrichthyes - Heterodontiformes - Heterodontidae
Heterodontus sp. de Blainville 1816
Chondrichthyes - Lamniformes - Lamnidae
Lamna cattica (Philippi 1846)
Procarcharodon sp. Casier 1960
Chondrichthyes - Carcharhiniformes - Galeocerdidae
Chondrichthyes - Carcharhiniformes - Scyliorhinidae
Chondrichthyes - Carcharhiniformes - Sphyrnidae
Sphyrna sp. Rafinesque 1810
see common names

Geography
Country:Argentina State/province:Chubut County:Gaiman
Coordinates: 43.3° South, 65.5° West (view map)
Paleocoordinates:42.9° South, 61.9° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Paleogene - Neogene Epoch: Oligocene - Miocene
10 m.y. bin: Cenozoic 4 - Cenozoic 5-6
Key time interval: Oligocene - Miocene
Age range of interval: 33.9 - 5.333 m.y. ago
Stratigraphy
Formation:Gaiman Member:Monte Leon
Stratigraphic resolution:member
Stratigraphy comments: "They are restricted to the first ten meters above the contact with sediments of continental origin bearing Colhuehuapian fauna."
Lithology and environment
Primary lithology:fine,tuffaceous,shelly/skeletal,gray silty sandstone
Includes fossils?Y
Lithology description: The sediments are gray, fine grained, tuffaceous sandstones and siltstones with some oyster banks.
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some genera
Collection methods:surface (in situ),field collection,survey of museum collection
Reason for describing collection:taxonomic analysis
Museum repositories:MLP
Collectors:A. L. Cione, E. Tonnin, R. Brunet, and R. Taylor
Metadata
Database number:133690
Authorizer:S. Peters Enterer:S. McMullen
Research group:vertebrate
Created:2012-09-25 07:00:07 Last modified:2025-02-22 15:12:02
Access level:the public Released:2012-09-25 07:00:07
Creative Commons license:CC0
Reference information

Primary reference:
43103. A. L. Cione. 1986. A New Megascyliorhinus (Chondrichthyes, Galeomorphii) from the Middle Tertiary of Patagonia. Journal of Vertebrate Paleontology 6(2):105-112 [S. Peters/S. McMullen]