Quebrada La Totora, Profil 4, Sample 5-1: Middle Toarcian, Chile
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Heterostropha
- Nerinellidae
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? Nerinella sp.
Sharpe 1849
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2 individuals | ||||||
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Bivalvia
- Trigoniida
- Myophorellidae
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Vaugonia informal sp. A
Crickmay 1930
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3 individuals | ||||||
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Bivalvia
- Lucinida
- Lucinidae
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? Mesomiltha huayquimili
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1 individual | ||||||
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Mesomiltha bellona
d'Orbigny 1850
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10 individuals | ||||||
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya fidicula
Sowerby 1826
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68 individuals | ||||||
| recombined as Pholadomya (Pholadomya) fidicula | |||||||
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Bivalvia
- Pandorida
- Laternulidae
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Cercomya undulata
Sowerby 1827
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12 individuals | ||||||
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Bivalvia
- Pholadida
- Ceratomyidae
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Gresslya peregrina
(Phillips 1829)
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102 individuals | ||||||
| original and current combination Unio peregrinus | |||||||
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Bivalvia
- Pholadida
- Pleuromyidae
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Pleuromya uniformis
Sowerby 1813
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77 individuals | ||||||
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Bivalvia
- Cardiida
- Cardiidae
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Protocardia striatula
Sowerby 1829
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1 individual | ||||||
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Bivalvia
- Mytilida
- Mytilidae
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Modiolus baylei
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3 individuals | ||||||
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Modiolus imbricatus
(Sowerby 1818)
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2 individuals | ||||||
| recombined as Modiolus (Modiolus) imbricatus | |||||||
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Modiolus giganteus
Quenstedt 1857
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3 individuals | ||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea (Idonearca) cf. rothi
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4 individuals | ||||||
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Bivalvia
- Ostreida
- Bakevelliidae
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Gervillaria hartmanni
(Münster 1834)
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1 individual | ||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Gryphaea sp.
Lamarck 1801
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2 individuals | ||||||
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Gryphaea (Bilobissa) latior
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2 individuals | ||||||
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Rhynchonellata
- Terebratulida
- Lobothyrididae
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Lobothyris subpunctata
(Davidson 1851)
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3 individuals | ||||||
| synonym of Lobothyris punctata | |||||||
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Rhynchonellata
- Rhynchonellida
- Rhynchonellidae
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Rhynchonelloidea informal sp. A
Buckman 1917
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5 individuals | ||||||
| see common names | |||||||
Geography
| Country: | Chile |
| Coordinates: | 28.7° South, 70.2° West (view map) |
| Paleocoordinates: | 27.2° South, 33.1° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Toarcian | 10 m.y. bin: | Jurassic 3 |
| Key time interval: | Middle Toarcian | ||
| Age range of interval: | 182.90000 - 180.40000 m.y. ago |
Stratigraphy
| Local section: | Quebrada La Totora | Local bed: | 5-1 |
| Local order: | bottom to top | ||
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | lithified sandstone | ||
| 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 |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | mechanical |
| Collection size: | 301 individuals |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 35447 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2003-12-16 01:08:43 | Last modified: | 2017-08-01 18:58:31 |
| Access level: | the public | Released: | 2003-12-16 01:08:43 |
| 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] |