Las Peñas [Tubul Fm]: Early Pleistocene, Chile
collected by Biro

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes
Echinoidea
Thecostraca
Cirripedia indet. (Rafinesque 1816)
225 specimens
Malacostraca - Decapoda
2 specimens
Rhynchonellata - Terebratulida - Terebratellidae
Magellania venosa Solander 1789
260 specimens
unclassified
Bryozoa indet. Ehrenberg 1831
Scaphopoda - Dentaliida - Dentaliidae
2 specimens
Gastropoda - Opisthobranchiata - Cylichnidae
6 specimens
Gastropoda - Neogastropoda - Thaisidae
Chorus giganteus (Lesson 1830)
17 specimens
Gastropoda - Neogastropoda - Nassariidae
Nassarius taeniolatus (Philippi 1845)
3 specimens
Gastropoda - Neogastropoda - Mangeliidae
Bela paesleri Strebel 1905
14 specimens
Gastropoda - Neogastropoda - Volutidae
Adelomelon ancilla (Lightfoot 1786)
1 specimen
Gastropoda - Neogastropoda - Muricidae
Trophon geversianus (Pallas 1774)
9 specimens
"Xymenopsis" cf. dispar (Rochebrune and Mabile 1889)
16 specimens
Gastropoda - Ranellidae
Fusitriton magellanicus (Chemnitz 1788)
20 specimens
Sassia leucostomoides (Sowerby 1846)
6 specimens
Gastropoda - Naticidae
37 specimens
Gastropoda - Epitoniidae
1 specimen
Bivalvia - Pectinida - Pectinidae
Zygochlamys patagonica (King and Broderip 1832)
305 specimens
Bivalvia - Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758
1 specimen
Bivalvia - Carditida - Carditidae
19 specimens
Bivalvia - Solenida - Pharidae
Ensis macha (Molina 1782)
38 specimens
Bivalvia - Pandorida - Pandoridae
Pandora cistula Gould 1850
53 specimens
Bivalvia - Cardiida - Tellinidae
Macoma inornata (Hanley 1844)
8 specimens
Bivalvia - Cardiida - Mactridae
Darina solenoides (King and Broderip 1832)
1 specimen
Bivalvia - Cardiida - Veneridae
Retrotapes exalbidus (Dillwyn 1817)
669 specimens
Bivalvia - Nuculida - Nuculidae
Ennucula grayi (d'Orbigny 1846)
47 specimens
Bivalvia - Nuculanida - Malletiidae
Malletia chilensis des Moulins 1832
9 specimens
Tindariopsis sulcata (Gould 1852)
1850 specimens
see common names

Geography
Country:Chile
Coordinates: 37.8° South, 73.3° West (view map)
Paleocoordinates:37.7° South, 73.1° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Quaternary Epoch: Pleistocene
10 m.y. bin: Cenozoic 6
Key time interval: Early Pleistocene
Age range of interval: 2.58 - 0.774 m.y. ago
Stratigraphy
Formation:Tubul
Stratigraphic resolution:bed
Stratigraphy comments: LITHOSTRATIGRAPHY: From the Tubul Fm, which is overlies the Ranquil Fm (Late Miocene). AGE: Dated as middle Pliocene (Martínez and Osorio, 1968), late Pliocene (Martínez, 1976), but is regarded as Early Pleistocene in the present publciation, on the basis of macrofossil and microfossil biostratigraphy.
Lithology and environment
Primary lithology:tuffaceous,gray lithified sandy mudstone
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Light-grey, soft tuffaceous sandy mudstone. LITHIFICATION: Unlithified, on the basis of figured specimens and facies description.
Environment:lagoonal
Geology comments: ENVIRONMENT: Possibly lagoonal.
Taphonomy
Modes of preservation:body,original aragonite
Size of fossils:macrofossils
Preservation of anatomical detail:medium
Collection methods and comments
Collection methods:bulk,surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collectors:Biro
Collection method comments: COLLECTOR: L. Biró. REPOSITORY: Universidad de Concepción, Chile.
Taxonomic list comments:COVERAGE: Exhaustive for mollusca and brachiopoda. NOMENCLATURE: Not an authoritative publication, but identified by specialists, with species-resolution identifications and modern nomenclature.
Metadata
Database number:89241
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:M. Krause Research group:marine invertebrate
Created:2009-05-11 11:58:00 Last modified:2025-02-22 15:12:02
Access level:the public Released:2009-05-11 11:58:00
Creative Commons license:CC0
Reference information

Primary reference:
29934. S. N. Nielson and C. Valdovinos. 2008. Early Pleistocene mollusks of the Tubul Formation, south-central Chile. The Nautilus 122(4):201-216 [A. Hendy/A. Hendy]

Secondary references:

57324 C. Valdovinos and S. N. Nielsen. 2006. Molluscs of the Tubul Formation (South-central Chile): Implications for the early Pleistocene climate of the. Southeastern Pacific. Actas 2 [W. Kiessling/M. Krause]