List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Amphibia
- Temnospondyli
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Edingerella madagascariensis
(Lehman 1961)
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Maganuco et al. 2009 | 1 specimen | ||||||||
| MSNM V2992, mould of complete skull | ||||||||||
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Amphibia
- Temnospondyli
- Trematosauridae
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Aphaneramma gavialimimus n. sp.
Fortuny et al. 2017
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Fortuny et al. 2017 | 1 specimen | ||||||||
| UA-Amb007 | ||||||||||
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cf. Tertremoides madagascariensis
(Lehman 1966)
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1 specimen | |||||||||
| MSNM V2993, incomplete skull | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Madagascar | State/province: | Diana | County: | Ambilobe |
| Coordinates: | 13.5° South, 48.8° East (view map) | ||||
| Paleocoordinates: | 44.5° South, 41.3° East | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Stratigraphy
| Geological group: | Sakamena | Formation: | Middle Sakamena | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "All previously described tetrapod specimens from the Diego Basin have been collected from the 'Couches à Poissons et Ammonites' (Besairie 1971) suggesting that the material described herein also pertains to this horizon, though this cannot be stated with absolute certainty." The "Couches à Poissons et Ammonites" are equivalent to the Middle Sakamena Formation of the Morondava Basin. "Biostratigraphical correlations based on ammonite faunas indicate referral of the 'Couches à Poissons et Ammonites' to the local Gyronitien Stage (Besairie 1971), which is equivalent to the Induan Stage of the Lower Triassic. This conclusion is supported by comparisons between the vertebrate faunas of Madagascar and the African mainland, which suggest that the Middle Sakamena Formation is intermediate in age between the Lystrosaurus and Cynognathus Assemblage Zones (Battail et al. 1987). Palynological data is also consistent with these interpretations (Wescott and Diggens 1998)." (Ketchum & Barrett, 2004. Canadian Journal of Earth Sciences 41:1-8).
"The presence of Magniestheria truempyi in the same formation (Shen et al., 2002) indicates an Early Smithian (Olenekian, Early Triassic) age by correlation with the well-constrained Triassic strata of the Germanic Basin (Kozur and Weems, 2010)." (Falconnet et al. 2010. Comptes Rendus Palevol 11:357-369) Given the conflicting suggestions of an Induan or early Olenekian age, an Induan–Smithian range is given here. | |||||
Lithology and environment
| Primary lithology: | nodular "siliciclastic" |
| Includes fossils? | Y |
| Lithology description: Fossil preserved as a natural mould in a siliceous nodule | |
| Environment: | deltaic indet. |
Taphonomy
| Modes of preservation: | mold/impression,concretion |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
Collection methods and comments
| Collection methods: | surface (float),survey of museum collection |
| Reason for describing collection: | taxonomic analysis | Collection dates: | 1990s |
| Collection method comments: MSNM: Museo di Storia Naturale di Milano | |
Metadata
| Database number: | 144100 | ||
| Authorizer: | R. Butler, G. Lloyd | Enterer: | R. Butler, G. Lloyd |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2013-04-30 21:44:11 | Last modified: | 2018-02-01 13:03:25 |
| Access level: | the public | Released: | 2013-04-30 21:44:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 46594. | S. Maganuco and G. Pasini. 2009. A new specimen of trematosaurian temnospondyl from the Lower Triassic of NW Madagascar, with remarks on palatal anatomy and taxonomic affinities. Atti della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 150:91-112 [R. Butler/R. Butler/R. Butler] |
Secondary references:
| 65071 | J. Fortuny, S. Gastou, F. Escuillié, L. Ranivoharimanana, and J.-S. Steyer. 2017. A new extreme longirostrine temnospondyl from the Triassic of Madagascar: phylogenetic and palaeobiogeographical implications for trematosaurids. Journal of Systematic Palaeontology 16:675-688 [G. Lloyd/G. Lloyd] | |
| 46595 | S. Maganuco, J. S. Steyer, G. Pasini, M. Boulay, S. Lorrain, A. Beneteau, and M. Auditore. 2009. An exquisite specimen of Edingerella madagascariensis (Temnospondyli) from the Lower Triassic of NW Madagascar; cranial anatomy, phylogeny, and restorations. Memorie della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 36:1-72 [R. Butler/R. Butler] |