Puerto Piramide - Entrerriense Fm (Miocene of Argentina)

Where: Chubut, Argentina (42.3° S, 64.1° W: paleocoordinates 42.4° S, 61.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Entrerriense Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• Entrerriense Formation. This is tentatively placed in the early Late Miocene, as revealed by the presence of typical warm-water genera, with notable generica affinities to the Panamanian, Carribean, and Neozelandic bioprovinces, associated with paleoaustral and cosmopolitan genera. The formation may be correlated with the Parana Formation (Entre Rios), Camacho Formation (Uruguay), and those recorded from subsurface wells in Cuenca de Pelotas and Rio Grande (Brazil), and Laguna del Sauce and Chuy (Uruguay). The Miocene has been divided into Patagoniense, Entrerriense, and Riogrense, and alternatively the Gaiman (Patagoniense Fm), Puerto Madryn (Entrerriense, and Riogrense Fm's).

• formation-level stratigraphic resolution

Environment/lithology: marine

• No paleoenvironmental information reported.
• No lithological information reported.

Size class: macrofossils

Collection methods: quarrying,

• Taxa are lodged in the MPEF.

Primary reference: R.F.J. Brunet. 1995. New Species of Mollusca from the Entrerriense Formation (Upper Miocene) of Chubut Province, Argentina and species not previously reported from this formation. Part 1 - Gastropoda and Scaphopoda. Tulane Studies in Geology and Paleontology 28(1-2):1-56 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42146: authorized by Austin Hendy, entered by Austin Hendy on 24.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Comprises taxa described taxonomically in this work. No synopsis list is provided for collection sites or the formation. Only includes mollusca.
 Ptenoglossa - Epitoniidae
 Patellogastropoda - Nacellidae
 Patellogastropoda - Acmaeidae
Pectinodonta sp. Dall 1892 limpet
 Patellogastropoda - Lottiidae
Scurria scurra Lesson 1830 limpet
 Opisthobranchia - Retusidae
 Opisthobranchia - Cylichnidae
Acteocina piramidesia barrel-bubble
 Triphoroidea - Newtoniellidae
 Neogastropoda - Olividae
 Neogastropoda - Buccinidae
 Neogastropoda - Marginellidae
Prunum sp. Swainson 1840 margin shell
 Neogastropoda - Volutidae
 Neogastropoda - Muricidae
 Neogastropoda - Mangeliidae
Bellaspira sp. Conrad 1868 snail
 Neogastropoda - Drilliidae
Drillia sp. Gray 1838 snail
 Neogastropoda - Turridae
Polystira sp. Woodring 1928 turrid
 Capuloidea - Capulidae
 Littorinoidea - Littorinidae
Littorina saxatilis Olivi 1792 periwinkle
"Littorina nebulosa" = Littoraria nebulosa Lamarck 1822 periwinkle
Subspecies: Littorina nebulosa tessellata
 Naticoidea - Naticidae
"Polinices (Euspira) ortmanni" = Polynices ortmanni Ihering 1907 moon snail
"Polinices (Euspira) consimilis" = Polynices consimilis Ihering 1907 moon snail
 Calyptraeoidea - Calyptraeidae
Crepidula ancestra slipper shell
 Sorbeoconcha - Turritellidae
Turritella heimi turret shell
Turritella broggii turret shell
Turritella figueirasi turret shell
Turritella flechensis turret shell
Turritella hodsoni turret shell
Turritella alzolai turret shell
 Pulmonata - Succineidae
 Pyramidelloidea - Pyramidellidae
 Trochoidea - Trochidae
 Trochoidea - Liotiidae