Las Peñas [Tubul Fm] (Pleistocene of Chile)

Where: Chile (37.8° S, 73.3° W: paleocoordinates 37.9° S, 72.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Tubul Formation, Early/Lower Pleistocene (2.6 - 0.8 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: lagoonal; lithified, tuffaceous, gray, sandy mudstone

• ENVIRONMENT: Possibly lagoonal.
• SPECIFIC LITHOLOGY: Light-grey, soft tuffaceous sandy mudstone. LITHIFICATION: Unlithified, on the basis of figured specimens and facies description.

Size class: macrofossils

Preservation: original aragonite

Collected by Biro

Collection methods: bulk, surface (in situ),

• COLLECTOR: L. Biró. REPOSITORY: Universidad de Concepción, Chile.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 89241: authorized by Austin Hendy, entered by Austin Hendy on 11.05.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for mollusca and brachiopoda. NOMENCLATURE: Not an authoritative publication, but identified by specialists, with species-resolution identifications and modern nomenclature.
unclassified
  -
Malacostraca
 Decapoda -
Decapoda indet. Latreille 1802 decapod
Maxillopoda
 Cirripedia -
Rhynchonellata
 Terebratulida - Terebratellidae
Magellania venosa Solander 1789
Bivalvia
 Pectinida - Pectinoidae
Zygochlamys patagonica King and Broderip 1832 scallop
 Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758 mussel
 Carditida - Carditidae
Cyclocardia velutinus Smith 1881 clam
 Cardiida - Mactridae
Darina solenoides King and Broderip 1832 clam
 Cardiida - Veneridae
"Retrotapes exalbidus" = Retrotapes exalbida
"Retrotapes exalbidus" = Retrotapes exalbida Dillwyn 1817 venus clam
 Cardiida - Tellinidae
Macoma inornata Hanley 1844 tellin clam
 Solenida - Pharidae
Ensis macha Molina 1782 clam
 Pandorida - Pandoridae
Pandora cistula Gould 1850 clam
 Nuculida - Nuculidae
Ennucula grayi d'Orbigny 1846 nut clam
 Protobranchia -
Malletia chilensis des Moulins 1832 clam
Tindariopsis sulcata Gould 1852 clam
Gastropoda
 Ptenoglossa - Epitoniidae
Epitonium (Nitidiscala) magellanicus Philippi 1845 wentletrap
 Cephalaspidea - Cylichnidae
Scaphander interruptus Dall 1889 snail
 Neogastropoda - Nassariidae
Nassarius taeniolatus Philippi 1845 snail
 Neogastropoda - Volutidae
Adelomelon ancilla Lightfoot 1786 volute
 Neogastropoda - Muricidae
"Xymenopsis" cf. dispar Rochebrune and Mabile 1889 murex snail
"Trophon geversianus" = Trophon geversianum Pallas 1774 murex snail
 Neogastropoda - Mangeliidae
Bela paesleri Strebel 1905 snail
 Neogastropoda - Thaisidae
Chorus giganteus Lesson 1830 snail
 Naticoidea - Naticidae
Euspira guamblinensis Frassinetti and Covacevich 1995 moon snail
 Tonnoidea - Ranellidae
Sassia leucostomoides Sowerby 1846 triton shell
Fusitriton magellanicus Chemnitz 1788 triton shell
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin