Monte Leon, Paleosurface I (Miocene of Argentina)

Where: Argentina (50.3° S, 68.9° W: paleocoordinates 51.1° S, 62.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Monte Leon Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, volcaniclastic, silty sandstone

Size class: macrofossils

Collection methods: surface (in situ), mechanical,

• Repository: GHUNLPam, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Santa Rosa, La Pampa, Argentina.

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 185967: authorized by Matthew Clapham, entered by Matthew Clapham on 31.05.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Decapoda - Geryonidae
Chaceon peruvianus d'Orbigny 1842 crab
 Terebratulida - Terebratellidae
 Arcida - Arcidae
"Arca patagonica" = Arca (Arca) patagonica
"Arca patagonica" = Arca (Arca) patagonica Ihering 1897 ark
 Arcida - Glycymerididae
 Arcida - Cucullaeidae
Cucullaea alta Sowerby 1846 clam
 Arcida - Limopsidae
Limopsis insolita Sowerby 1846 clam
 Pectinida - Anomiidae
Anomiidae indet. Rafinesque 1815 scallop
 Ostreida - Ostreidae
Crassostrea hatcheri Ihering 1899 oyster
 Carditida - Crassatellidae
 Carditida - Carditidae
 Cardiida - Mactridae
Mactra patagonica d'Orbigny 1846 clam
 Cardiida - Veneridae
"Ameghinomya sp." = Leukoma Römer 1857 venus clam
Chionopsis sp. Olsson 1932 venus clam
Pitar julianum venus clam
 Cardiida - Tellinidae
Serratina sp. Pallary 1922 tellin clam
Tellina sp. Linnaeus 1758 tellin clam
 Cardiida - Cardiidae
"Cardium puelchum" = Trachycardium puelchum, Cardium sp.
"Cardium puelchum" = Trachycardium puelchum Sowerby 1846 cockle
Cardium sp. Linnaeus 1758 cockle
 Hiatellida - Hiatellidae
 Lucinida - Lucinidae
 Nuculida - Nuculidae
Nucula sp. Lamarck 1799 nut clam
 Neogastropoda - Cancellariidae
Sveltia major Ihering 1899 snail
 Neogastropoda - Mitridae
Austroimbricaria quemadensis Ihering 1897 mitre shell
 Neogastropoda - Volutidae
"Proscaphella gracilior" = Miomelon gracilis
"Proscaphella gracilior" = Miomelon gracilis Philippi 1887 volute
 Neogastropoda - Muricidae
Trophon santacrucensis, "Xymenella dautzembergi" = Xymene
Trophon santacrucensis Ihering 1897 murex snail
"Xymenella dautzembergi" = Xymene murex snail
 Neogastropoda - Turridae
"Eoturris santacrucensis" = Eopleurotoma
"Eoturris santacrucensis" = Eopleurotoma turrid
 Stromboidea - Struthiolariidae
Struthiolarella patagoniensis Camacho and Zinsmeister 1989 snail
Struthiolarella ameghinoi Ihering 1897 snail
 Naticoidea - Naticidae
Bulbus sp. Brown 1839 moon snail
 Vermetoidea - Vermetidae
Vermetidae indet. Rafinesque 1815 worm shell
 Calyptraeoidea - Calyptraeidae
Calyptraea sp. Lamarck 1799 slipper shell
 Tonnoidea - Ranellidae
Sassia bicegoi triton shell
 Sorbeoconcha - Turritellidae
 Trochoidea - Trochidae
Bryozoa indet. Ehrenberg 1831
Echinoidea indet. Leske 1778 sea urchin
 Scleractinia - Flabellidae
Flabellum sp. Lesson 1831 stony coral