Melovatka Formation


The Melovatka or Melovatsskaya Formation is a Cenomanian geologic formation in Russia. Pterosaur fossils have been recovered from the formation.

Description

The two phosphorite horizons are separated in places by a yellowish sand interbed up to 1 m thick; however, they sometimes merge into a single horizon. The lower interbed or part of the integrated phosphorite horizon shows in places straight diagonal bedding, which is manifested in the orientation of almost flat pellets, pebbles, and pseudomorphs on bivalve shells. The phosphate concretions are irregular aggregates and rounded pebbles, ranging in size from several millimeters to 5–10 cm. They are dark brown or nearly black.

Fossil content

The following vertebrate fossils were reported from the formation:Cerebavis cenomanicaCretolamna appendiculataCretoxyrhina vraconensisEdaphodon sedgwickiElasmodectes kiprijanoffiElasmodus sinzoviEostriatolamia subulataIschyodus latusMegarhizodon cf. macrorhizaParaorthacodus recurvusPseudomegachasma casei?Scapanorhynchus raphiodonSynechodus disparLonchodectes sp.Odontaspis sp.Palaeoanacorax volgensisPolyacrodus sp.Pseudoisurus denticulatus (=? Dwardius sp.)Saratovia glickmaniSquatina sp.?Platypterygius sp.Pervushovisaurus campylodon