Batylykh Formation


The Batylykh Formation is a geological formation in Yakutia, Russia. It is of an uncertain Early Cretaceous age, probably dating between the Berriasian and the Barremian. It is the oldest unit of the thick Sangar Series within the Vilyuy syneclise. The mudstones, sandstones and shales of the formation were deposited in a fluvial to lacustrine environment.

Fossil content

The formation is best known for the Teete locality, which has revealed remains of numerous vertebrates, including sauropods, and other dinosaur teeth as well as numerous species of mammal, including Sangarotherium, Khorotherium and tritylodontid Xenocretosuchus. as well as choristodere Khurendukhosaurus.
Other fossils recovered from the formation are:
;Mammals
;Reptiles
;Amphibians
;Fish
;Insects
;Bivalves
;Gastropods
;Flora