M-15, near Antanandava (Triassic to of Madagascar)

Where: Toliara, Madagascar (22.2° S, 45.0° E: paleocoordinates 43.9° S, 30.6° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lower Member (Isalo II Formation), Ladinian to Ladinian (242.0 - 228.0 Ma)

• Unit is known as either the Makay Formation or "Isalo II"; basal part of unit. This formation is of uncertain age and is generally considered Ladinian or Carnian; Langer et al. (2000) support a Carnian age based upon palynology and their interpretation of the phylogenetic position of the rhynchosaur material; by contrast, Kammerer et al. (2010) consider a Ladinian age more likely

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; red claystone and sandstone

• "Specimens occur in a sequence of variegated, bioturbated red and green clays and siltstones, and gray cross-bedded fine- to coarse-grained sandstones. UA 10607 was found in the red clay deposits"

Size class: macrofossils

Collection methods: mechanical,

• UA: Universit d’Antananarivo, Antananarivo, Madagascaro

Primary reference: C. F. Kammerer, J. J. Flynn, L. Ranivoharimanana and A. R. Wyss. 2010. The first record of a probainognathian (Cynodontia: Chiniquodontidae) from the Triassic of Madagascar. Journal of Vertebrate Paleontology 30(6):1889-1894 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 100373: authorized by Richard Butler, entered by Richard Butler on 08.12.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Rhynchosauria -
Rhynchosauria indet. Osborn 1903 rhynchosaur
Osteichthyes
 Therapsida - Chiniquodontidae
Chiniquodon kalanoro n. sp. Kammerer et al. 2010 cynodont
UA 10607, a partial mandible
 Therapsida - Traversodontidae
Dadadon isaloi Flynn et al. 2000 cynodont