Quebrada El Asiento, Profil 2, Sample 2-61: Late Pliensbachian, Chile
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Rhynchonellida
- Tetrarhynchiidae
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Tetrarhynchia tetrahedra
(Sowerby 1812)
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5 individuals | ||||||
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Quadratirhynchia informal sp. B
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9 individuals | ||||||
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Rhynchonellata
- Terebratulida
- Terebratulidae
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"Terebratula" informal sp. A
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16 individuals | ||||||
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"Terebratula" informal sp. B
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10 individuals | ||||||
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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2 individuals | ||||||
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Gastropoda
- Pleurotomariidae
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"Pleurotomaria" informal sp. A
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1 individual | ||||||
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Gastropoda
- Eucyclidae
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Amberleya cf. americana
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1 individual | ||||||
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Gastropoda
- Heterostropha
- Tubiferidae
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Striactaeonina transatlantica
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3 individuals | ||||||
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Bivalvia
- Trigoniida
- Myophorellidae
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Myophorella (Myophorella) araucana
(Leanza 1942)
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19 individuals | ||||||
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Bivalvia
- Trigoniida
- Laevitrigoniidae
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Quadratojaworskiella pustulata
(Reyes and Perez 1980)
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8 individuals | ||||||
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Bivalvia
- Trigoniida
- Trigoniidae
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Myophorigonia aff. neuquensis
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2 individuals | ||||||
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Bivalvia
- Carditida
- Astartidae
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Astartidae indet.
d'Orbigny 1844
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2 individuals | ||||||
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Bivalvia
- Cardiida
- Cardiidae
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Protocardia striatula
Sowerby 1829
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7 individuals | ||||||
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Bivalvia
- Cardiida
- Arcticidae
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Arcticidae indet.
Newton 1891
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5 individuals | ||||||
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Bivalvia
- Pholadida
- Pleuromyidae
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Pleuromya uniformis
Sowerby 1813
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21 individuals | ||||||
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya (Pholadomya) corrugata
(Koch and Dunker 1837)
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10 individuals | ||||||
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Pholadomya (Pholadomya) multilineata
(Gabb 1870)
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4 individuals | ||||||
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Pholadomya (Pholadomya) fidicula
(Sowerby 1826)
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1 individual | ||||||
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Bivalvia
- Pandorida
- Laternulidae
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? Platymyoidea cf. longa
(Buvignier 1852)
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1 individual | ||||||
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Cercomy (Cercomya) undulata
Sowerby 1827
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1 individual | ||||||
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Bivalvia
- Lucinida
- Lucinidae
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Mesomiltha bellona
d'Orbigny 1850
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35 individuals | ||||||
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Bivalvia
- Mytilida
- Mytilidae
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Modiolus (Modiolus) lonsdalei
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1 individual | ||||||
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Modiolus (Modiolus) chilensis
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5 individuals | ||||||
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Bivalvia
- Pectinida
- Limidae
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Plagiostoma informal sp. B
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2 individuals | ||||||
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Bivalvia
- Pectinida
- Entoliidae
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Entolium corneolum
(Young and Bird 1828)
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22 individuals | ||||||
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Bivalvia
- Pectinida
- Neitheidae
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Weyla (Lywea) unca
(Philippi 1899)
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1 individual | ||||||
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Weyla (Weyla) alata
(von Buch 1838)
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37 individuals | ||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Gryphaea (Gryphaea) cf. dumortieri
Joly 1907
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34 individuals | ||||||
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Bivalvia
- Ostreida
- Malleidae
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Gervilleioperna (Gervilletia) turgida
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2 individuals | ||||||
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Anthozoa
- Scleractinia
- Thecosmiliidae
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Montlivaltia sp.
Lamouroux 1821
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16 individuals | ||||||
| see common names | |||||||
Geography
| Country: | Chile |
| Coordinates: | 26.5° South, 69.3° West (view map) |
| Paleocoordinates: | 26.7° South, 32.1° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Early Jurassic |
| Stage: | Pliensbachian | 10 m.y. bin: | Jurassic 2 |
| Key time interval: | Late Pliensbachian | ||
| Age range of interval: | 192.9 - 184.2 m.y. ago |
Stratigraphy
| Local section: | Quebrada El Asiento | Local bed: | 2-61 |
| Local order: | bottom to top | ||
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | lithified "mixed carbonate-siliciclastic" | ||
| Environment: | open shallow subtidal | Tectonic setting: | back-arc basin |
Taphonomy
| Modes of preservation: | body,mold/impression,original calcite,replaced with silica |
| Size of fossils: | macrofossils |
| Articulated whole bodies: | some |
| Temporal resolution: | time-averaged |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | mechanical |
| Collection size: | 283 individuals |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 33883 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | M. Manojlovic | Research group: | marine invertebrate |
| Created: | 2003-08-08 06:07:48 | Last modified: | 2016-08-11 11:23:31 |
| Access level: | the public | Released: | 2003-08-08 06:07:48 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 487. | M. Aberhan. 1992. Palokologie und zeitliche Verbreitung benthischer Faunengemeinschaften im Unterjura von Chile. Beringeria 5:1-174 [M. Kosnik/M. Kosnik] |