Las Peñas [Tubul Fm]: Early/Lower Pleistocene, Chile
collected by Biro
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Echinoidea
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Echinoidea indet.
(Leske 1778)
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unclassified
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Chondricthyes indet.
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Rhynchonellata
- Terebratulida
- Terebratellidae
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Magellania venosa
Solander 1789
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260 specimens | ||||||
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unclassified
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Bryozoa indet.
Ehrenberg 1831
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium sp.
Linnaeus 1758
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2 specimens | ||||||
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Gastropoda
- Opisthobranchia
- Cylichnidae
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Scaphander interruptus
Dall 1889
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6 specimens | ||||||
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Gastropoda
- Epitoniidae
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Epitonium (Nitidiscala) magellanicus
(Philippi 1845)
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1 specimen | ||||||
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Gastropoda
- Naticidae
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Euspira guamblinensis
(Frassinetti and Covacevich 1995)
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37 specimens | ||||||
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Gastropoda
- Neogastropoda
- Nassariidae
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Nassarius taeniolatus
(Philippi 1845)
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3 specimens | ||||||
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Gastropoda
- Neogastropoda
- Thaisidae
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Chorus giganteus
(Lesson 1830)
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17 specimens | ||||||
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Gastropoda
- Neogastropoda
- Mangeliidae
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Bela paesleri
Strebel 1905
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14 specimens | ||||||
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Gastropoda
- Neogastropoda
- Volutidae
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Adelomelon ancilla
(Lightfoot 1786)
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Muricidae
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"Xymenopsis" cf. dispar
(Rochebrune and Mabile 1889)
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16 specimens | ||||||
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Trophon geversianus
(Pallas 1774)
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9 specimens | ||||||
| recombined as Trophon geversianum | |||||||
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Gastropoda
- Ranellidae
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Sassia leucostomoides
(Sowerby 1846)
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6 specimens | ||||||
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Fusitriton magellanicus
(Chemnitz 1788)
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20 specimens | ||||||
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Bivalvia
- Nuculanida
- Malletiidae
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Malletia chilensis
des Moulins 1832
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9 specimens | ||||||
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Tindariopsis sulcata
(Gould 1852)
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1850 specimens | ||||||
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Bivalvia
- Nuculida
- Nuculidae
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Ennucula grayi
(d'Orbigny 1846)
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47 specimens | ||||||
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Bivalvia
- Mytilida
- Mytilidae
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Mytilus sp.
Linnaeus 1758
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1 specimen | ||||||
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Bivalvia
- Pectinida
- Pectinidae
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Zygochlamys patagonica
(King and Broderip 1832)
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305 specimens | ||||||
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Bivalvia
- Cardiida
- Tellinidae
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Macoma inornata
(Hanley 1844)
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8 specimens | ||||||
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Bivalvia
- Cardiida
- Veneridae
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Retrotapes exalbidus
(Dillwyn 1817)
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669 specimens | ||||||
| recombined as Retrotapes exalbida | |||||||
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Bivalvia
- Cardiida
- Mactridae
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Darina solenoides
(King and Broderip 1832)
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1 specimen | ||||||
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Bivalvia
- Solenida
- Pharidae
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Ensis macha
(Molina 1782)
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38 specimens | ||||||
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Bivalvia
- Pandorida
- Pandoridae
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Pandora cistula
Gould 1850
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53 specimens | ||||||
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Bivalvia
- Carditida
- Carditidae
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Cyclocardia velutinus
(Smith 1881)
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19 specimens | ||||||
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Malacostraca
- Decapoda
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Decapoda indet.
Latreille 1802
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2 specimens | ||||||
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Thecostraca
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Cirripedia indet.
(Rafinesque 1816)
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225 specimens | ||||||
| see common names | |||||||
Geography
| Country: | Chile |
| Coordinates: | 37.8° South, 73.3° West (view map) |
| Paleocoordinates: | 37.9° South, 72.8° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Early/Lower Pleistocene | ||
| Age range of interval: | 2.58000 - 0.77400 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: | 2015-12-10 09:01:47 |
| Access level: | the public | Released: | 2009-05-11 11:58:00 |
| Creative Commons license: | CC BY |
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] |