| 词条 | Kandreho Formation |
| 释义 |
| name = Kandreho Formation | period = Toarcian | age = Toarcian ~{{fossilrange|180|176}} | image = | imagesize = | caption = | type = Geological formation | prilithology = Marly limestone | otherlithology = | unitof = | subunits = | underlies = | overlies = | thickness = | namedfor = Kandreho | namedby = Geiger | year_ts = 2004 | area = | map = {{Location map+ | Madagascar | relief = 1 | width = 160 | float = center | caption = Outcrop of the formation in Madagascar | places = | lat_deg = -17.5 | lon_deg = 45.3 | mark = Blue pog.svg | marksize = 12 }} | map_caption = | location = | coordinates = {{coord|17.5|S|45.3|E|display=inline,title}} | paleocoordinates = {{coord|22.3|S|24.0|E|display=inline}} | region = Mahajanga Province | country = {{flag|Madagascar}} | extent = Mahajanga Basin }} The Kandreho Formation is an Early Jurassic (middle or late Toarcian) geological formation of the Mahajanga Basin of Madagascar. The marly limestones of the formation were deposited in a subtidal lagoonal environment. The formation overlies the Bouleiceras and Spiriferina beds of the early Toarcian and has been correlated to the Marrat Formation of Saudi Arabia. Fossils of the marine crocodylian Steneosaurus as well as bivalves and the ammonite Nejdia have been found in the formation.[1][2] The name Kandreho Formation was proposed by Geiger in 2004.[3] {{clearleft}}See also{{Portal|Geology|Paleontology|Jurassic|Madagascar|Prehistory of Africa}}
References1. ^Behazonaty, SW of the basin of the Kelifely at Fossilworks.org 2. ^Buffetaut et al., 1981, p.314 3. ^Geiger, 2004, p.125 Bibliography
9 : Geologic formations of Madagascar|Jurassic System of Africa|Early Jurassic Africa|Jurassic Madagascar|Toarcian Stage|Limestone formations|Lagoonal deposits|Paleontology in Madagascar|Mahajanga Province |
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