Behazonaty, SW of the basin of the Kelifely: Toarcian, Madagascar
collected by Genevieve and Henri Termier, guided by Eugene Raafimbelo
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Teleosauridae
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Steneosaurus sp.
Saint-Hilaire 1825
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1 specimen | |||||||||
| The upper jaw fragment found at Behazonaty (in the collections of the Institut G6ologique Albert de Lapparent, Paris) consists of a relatively small part of the maxillae, which meet ventrally and dorsally in the mediosagittal plane | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Madagascar | State/province: | Majunga |
| Coordinates: | 17.5° South, 45.3° East (view map) | ||
| Paleocoordinates: | 22.1° South, 36.2° East (Wright 2013) | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Early Jurassic |
| Stage: | Toarcian | 10 m.y. bin: | Jurassic 3 |
| Key time interval: | Toarcian | ||
| Age range of interval: | 184.2 - 174.7 m.y. ago |
Stratigraphy
| Formation: | Kandreho | ||||
| Stratigraphy comments: This horizon (D2 of BLAISON 1963) is referred to the middle or late Toarcian, and overlies the Bouleiceras and Spiriferina beds of the early Toarcian.
This series belongs to the Kandreho Formation (CoLLIGNON et al. 1959), which is the Malagasy equivalent of the Marrat Formation of Saudi Arabia (Jebel Tuwaiq). The corresponding province is known as the Transerythrean Province, which began with the Tuwaiq Gulf (Arkell et al. 1952). |
Lithology and environment
| Primary lithology: | hardground,ferruginous not reported |
| Includes fossils? | Y |
| Lithology description: It was collected from a ferruginous hard-ground in marly limestones containing the ammonite Nejdia Both levels also yield bivalves from the tidal zone (Trigonia, Modiolus), and sometimes show indications of supratidal and lagoonal environments (with gypsiferous clays); they also contain bone fragments and lignites, and are divided by hard-grounds | |
| Environment: | lagoonal/restricted shallow subtidal |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Collectors: | Genevieve and Henri Termier, guided by Eugene Raafimbelo |
Metadata
| Database number: | 132380 | ||
| Authorizer: | R. Benson | Enterer: | R. Benson | Research group: | vertebrate |
| Created: | 2012-08-15 21:40:12 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2012-08-15 21:40:12 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 42654. | E. Buffetaut, G. Termier, and H. Termier. 1981. A teleosaurid (Crocodylia, Mesosuchia) from the Toarcian of Madagascar and its palaeobiogeographical significance. Paläontologigische Zeitschrift 55(3-4):313-319 [R. Benson/R. Benson] |