Isalo II Formation

Geology

Group: Isalo

Members: unnamed (4), Lower (5), Upper (4)

Lithologies: not reported (7), "siliciclastic" (1), claystone (1), sandstone (4), conglomerate (1), "limestone" (1)

Paleoenvironments: terrestrial indet. (8), marginal marine indet. (1), fluvial indet. (2), channel lag (1), "floodplain" (1)

Age range: base of the Late/Upper Triassic to the top of the Bathonian or 237.00000 to 165.30000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Ladinian - Carnian241.464 - 227.3Madagascar (Toliara) (96206 96207 96208 96221 96281 96282 96283 100373)
Late/Upper Triassic237.0 - 201.4Madagascar (Toliara) (106539)
Norian - Early/Lower Jurassic227.3 - 174.7Madagascar (Toliara) (96323 96324 96325 96326)
Bathonian168.2 - 165.3Madagascar (Mahajunga) (92151 194791 194792 194793 194794 194795 194849 194850 194851 194852 194853 194854 194855 194856 194857 194858 194859 194860 194861)
Bathonian168.2 - 165.3Madagascar (Mahajanga) (81104 92016)