SDMNH 2780: Late/Upper Pleistocene, Mexico
collected by C.L. Hubbs 1969
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Patellida
- Lottiidae
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Collisella limatula
(Carpenter 1864)
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| original and current combination Patella limatula | ||||||||||
| (Carpenter) | ||||||||||
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Collisella scabra
(Gould 1846)
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| original and current combination Patella (Lottia) scabra | ||||||||||
| (Gould) | ||||||||||
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Gastropoda
- Tegulidae
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Tegula eiseni
Jordan 1936
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| recombined as Agathistoma eiseni | ||||||||||
| Jordan | ||||||||||
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Gastropoda
- Phasianellidae
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Tricolia sp.
Risso 1826
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Gastropoda
- Trochidae
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Norrisia norrisi
(Sowerby I 1838)
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| recombined as Norrisia norrisii | ||||||||||
| Sowerby | ||||||||||
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Gastropoda
- Lepetellida
- Fissurellidae
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Fissurella volcano
Reeve 1849
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| Reeve | ||||||||||
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Gastropoda
- Lepetellida
- Haliotidae
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Haliotis fulgens
Philippi 1845
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| Talmadge; subspecies guadalupensis | ||||||||||
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Gastropoda
- Lepetellida
- Scissurellidae
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Sinezona rimuloides
(Carpenter 1865)
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| (Carpenter) | ||||||||||
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Gastropoda
- Rissoidae
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Alvinia purpurea
(Dall 1871)
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| (Dall | ||||||||||
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Alvinia oldroydae
(Bartsch 1911)
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| recombined as Actonia oldroydae | ||||||||||
| (Bartsche | ||||||||||
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Gastropoda
- Barleeiidae
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Amphithalamus inclusus
Lozouet 1998
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| Carpenter | ||||||||||
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Barleeia subtenuis
Carpenter 1864
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| Carpenter | ||||||||||
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Barleeia haliotiphila
Carpenter 1864
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| Carpenter | ||||||||||
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Gastropoda
- Heterostropha
- Rissoellidae
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Rissoella excolpa
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| Bartsch | ||||||||||
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Rissoella tumens
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| (Carpenter) | ||||||||||
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unclassified
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Astraea undosa
(Wood 1828)
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| recombined as Megastraea undosa | ||||||||||
| (Wood) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Baja California |
| Coordinates: | 29.0° North, 118.2° West (view map) | ||
| Paleocoordinates: | 29.0° North, 118.2° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Late/Upper Pleistocene | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Late/Upper Pleistocene | ||
| Age range of interval: | 0.12900 - 0.01170 m.y. ago | ||
| Age estimate: | 127 ± 4 to 117 ± 3 Ka (U/Th) |
Stratigraphy
| Formation: | Discovery Point | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 127-117 ka age (Marine Isotope Substage 5e) for corals that were directly dated from localities SDMNH 0633 (UCMP D1547), 0644, and 2465 (Muhs 1994); dates are inferred to apply to the rest of the Discovery Point Formation. | |||||
Lithology and environment
| Primary lithology: | lithified conglomerate |
| Secondary lithology: | "limestone" |
| Lithology description: Discovery Point Formation: coarsely clastic sediments that grade laterally from conglomerate, locally with pebbles of volcanic origin, to a biostrome formed chiefly of coral fragments and mollusk shells. | |
| Environment: | perireef or subreef |
| Glacial or sequence phase: | interglacial |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,microfossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | SDSM | ||
| Collectors: | C.L. Hubbs | Collection dates: | 1969 |
Metadata
| Database number: | 194430 | ||
| Authorizer: | P. Holroyd | Enterer: | E. Orzechowski |
| Modifier: | E. Orzechowski | Research group: | marine invertebrate |
| Subset of collection #: | 84573 | ||
| Created: | 2018-06-19 18:45:18 | Last modified: | 2018-06-19 19:32:38 |
| Access level: | the public | Released: | 2018-06-19 18:45:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 30033. | D. R. Lindberg, B. Roth, M. G. Kellogg and C. L. Hubbs. 1980. Invertebrate megafossils of Pleistocene (Sangamon Interglacial) age from Isla de Guadalupe, Baja California, Mexico. In D. M. Power (ed.), The California Islands: Proceedings of a Multidisciplinary Symposium 41-70 [W. Kiessling/U. Merkel/P. Wagner] |