Monte Leon, Paleosurface II: Early/Lower Miocene, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Odontocymbiola sp. Clench and Turner 1964
2 specimens
Malacostraca - Decapoda - Geryonidae
Chaceon peruvianus (d'Orbigny 1842)
1 specimen
Scaphopoda - Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758
1 specimen
Gastropoda - Turritellidae
Turritella patagonica
31 specimens
Gastropoda - Neotaenioglossa - Calyptraeidae
Calyptraea sp. Lamarck 1799
2 specimens
Gastropoda - Cerithiopsidae
Cerithiopsis juliana
1 specimen
Gastropoda - Neogastropoda - Volutidae
Proscaphella gracilior (Ihering 1896)
1 specimen
synonym of Miomelon gracilis
Gastropoda - Neogastropoda - Terebridae
Terebra santacruzensis
1 specimen
Gastropoda - Neogastropoda - Raphitomidae
Austrotoma cuevensis
1 specimen
Gastropoda - Neogastropoda - Cancellariidae
Zeadmete ameghinoi
5 specimens
Gastropoda - Neogastropoda - Volutomitridae
Neoimbricaria patagonica (Ihering 1897)
2 specimens
Gastropoda - Naticidae
Natica sp. Scopoli 1777
4 specimens
Gastropoda - Trochidae
Calliostoma peraratum
1 specimen
Bivalvia - Ostreida - Ostreidae
? Crassostrea hatcheri (Ihering 1899)
9 specimens
Bivalvia - Pectinida - Pectinidae
Zygochlamys sp. Ihering 1907
3 specimens
Bivalvia - Arcida - Cucullaeidae
Cucullaea alta Sowerby 1846
1 specimen
Bivalvia - Cardiida - Mactridae
Mactra patagonica d'Orbigny 1846
1 specimen
Bivalvia - Cardiida - Veneridae
Retrotapes striatolamellata
1 specimen
Dosinia laeviuscula
67 specimens
Bivalvia - Cardiida - Cardiidae
Cardium sp. Linnaeus 1758
1 specimen
Bivalvia - Cardiida - Tellinidae
Tellinidae indet. Blainville 1814
1 specimen
Bivalvia - Hiatellida - Hiatellidae
Panopea quemadensis
21 specimens
Bivalvia - Carditida - Carditidae
Pleuromeris sp. Conrad 1867
7 specimens
unclassified
Bryozoa indet. Ehrenberg 1831
11 specimens
Echinoidea
Echinoidea indet. (Leske 1778)
4 specimens
see common names

Geography
Country:Argentina
Coordinates: 50.3° South, 68.9° West (view map)
Paleocoordinates:51.1° South, 62.2° West
Basis of coordinate:stated in text
Altitude:0 meters
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Early/Lower Miocene
Age range of interval:23.03000 - 15.98000 m.y. ago
Stratigraphy
Formation:Monte Leon
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:very fine,volcaniclastic poorly lithified silty sandstone
Includes fossils?Y
Environment:offshore
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:excellent
Abundance in sediment:abundant
Articulated whole bodies:many
Associated major elements:many
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:surface (in situ),mechanical,field collection
Reason for describing collection:paleoecologic analysis
Collection method comments: Repository: GHUNLPam, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Santa Rosa, La Pampa, Argentina.
Metadata
Database number:185968
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2017-05-31 22:29:45 Last modified:2017-05-31 22:29:45
Access level:the public Released:2017-05-31 22:29:45
Creative Commons license:CC BY
Reference information

Primary reference:
30007.decapod R. S. Crawford, S. Casadio, R. M. Feldmann, M. Griffin, A. Parras and C. E. Schweitzer. 2008. Mass mortality of fossil decapods within the Monte Leon Formation (early Miocene), southern Argentina: victims of Andean Volcanism?. Annals of Carnegie Museum 77(2):259-287 [C. Schweitzer/C. Schweitzer/M. Uhen]