523 1981: Carnian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bennettitales
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Cycadolepis aff. wettsteini
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1 specimen | ||||||
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Zamites fragilis
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1 specimen | ||||||
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Zamites aff. powelli
Fontaine 1890
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93 specimens | ||||||
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Zamites cf. truncatus
Zeiller 1903
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14 specimens | ||||||
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unclassified
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Macrotaeniopteris sp.
Schimper 1869
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86 specimens | ||||||
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Polypodiopsida
- Equisetales
- Phyllothecaceae
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? Phyllotheca sp.
Brongniart 1828
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28 specimens | ||||||
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Polypodiopsida
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? Cladophlebis spp.
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4 specimens | ||||||
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Polypodiopsida
- Marattiales
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Asterotheca santaclarae
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1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | Mexico | State/province: | Sonora |
| Coordinates: | 28.6° North, 109.7° West (view map) | ||
| Paleocoordinates: | 3.3° North, 46.8° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Carnian | 10 m.y. bin: | Triassic 3 |
| *Period: | Late/Upper Triassic | ||
| Key time interval: | Carnian | ||
| Age range of interval: | 237.00000 - 227.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Barranca | Formation: | Santa Clara | Local bed: | 523 |
| Stratigraphic resolution: | bed |
Lithology and environment
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),mechanical,field collection |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Also known as: | Unidad 28 (LB 5) | ||
| Database number: | 24010 | ||
| Authorizer: | A. Rees | Enterer: | D. Sunderlin |
| Modifier: | D. Sunderlin | Research group: | paleobotany |
| Subset of collection #: | 24092 | ||
| Created: | 2002-07-26 08:46:12 | Last modified: | 2002-07-30 11:30:31 |
| Access level: | group members | Released: | 2002-07-26 08:46:12 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 6703. | PGAP | A. Zambrano Garcia and R. Weber. 1985. Nuevo ensayo de un panorama de la paleoecologia de comunidades de la tafoflora Santa Clara (Triasico Tardio, Sonora). III Congreso Latinoamericano de Paleontologia. Mexico. Simposio sobre Floras del Triasico Tardio, Su Fitogeografia y Paleoecologia. Memoria 153-163 [A. Rees/D. Sunderlin/S. Bruning] |