East of Ankirihitra: Early Oxfordian, Madagascar
collected by M. Collignon 1953
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Aspidoceratidae
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Peltoceras trifidum horrida
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| UBGD.010192, UBGD.010193 | ||||||||||
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Cephalopoda
- Ammonitida
- Perisphinctidae
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Prososphinctes claromontanus
(Bukowski 1887)
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| UBGD.010176, UBGD.010177 | ||||||||||
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Prososphinctes trapezoidalis
Haas 1955
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| UBGD.010178, UBGD.010179 | ||||||||||
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Prososphinctes mazuricus n. sp.
(Bukowski 1887)
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| UBGD.010174, UBGD.010175 | ||||||||||
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Prososphinctes bernensis
(de Loriol 1898)
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| UBGD.010180-86 | ||||||||||
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Obtusicostites aff. devi
Spath 1931
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| juv. | ||||||||||
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Obtusicostites retrorsicostatus n. sp.
Collignon 1959
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| UBGD.010171, UBGD.010172 | ||||||||||
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Cephalopoda
- Ammonitida
- Oppeliidae
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Taramelliceras minax iabohazensis n. ssp.
Collignon 1959
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| UBGD.010170 | ||||||||||
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Brightia noizeti n. sp.
Collignon 1959
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| UBGD.010168, UBGD.010169 | ||||||||||
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Campylites delmontanus ambongoensis n. ssp.
Collignon 1959
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| UBGD.010166, UBGD.010167 | ||||||||||
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Trimarginites villersensis ankirihitraensis n. ssp.
Collignon 1959
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| UBGD.010164, UBGD.010165 | ||||||||||
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Cephalopoda
- Phylloceratida
- Phylloceratidae
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Phylloceras duodecimsulcatum n. sp.
Collignon 1959
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| UBGD.010162, UBGD.010163 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Madagascar |
| Coordinates: | 16.7° South, 46.5° East (view map) |
| Paleocoordinates: | 25.6° South, 24.0° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Late Jurassic |
| Stage: | Oxfordian | 10 m.y. bin: | Jurassic 5 |
| Key time interval: | Early Oxfordian | Ammonoid zone: | Properisphinctes bernensis et Trimarginites villersensis |
| Age range of interval: | 161.5 - 154.8 m.y. ago |
Stratigraphy
| Local section: | Ankirihitra | Local bed: | 4 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Trimarginites villersensis and Properisphinctes bernensis zone | |||||
Lithology and environment
| Primary lithology: | lithified marl |
| Secondary lithology: | lithified "limestone" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils | ||
| Collection methods: | field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | M. Collignon | Collection dates: | 1953 |
Metadata
| Also known as: | Collignon gisement 19 | ||
| Database number: | 234136 | ||
| Authorizer: | P. Scofield | Enterer: | P. Scofield |
| Modifier: | P. Scofield | Research group: | marine invertebrate |
| Created: | 2024-03-20 02:03:42 | Last modified: | 2024-03-20 03:54:26 |
| Access level: | the public | Released: | 2024-03-20 02:03:42 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 87935. | M. Collignon. 1959. Atlas des fossiles caractéristiques de Madagascar (Ammonites). Fascicule III (Oxfordian). Pl. XXXIV-XLVI [P. Scofield/P. Scofield] |