Melovatka Formation
Melovatka Formation Stratigraphic range: Middle Cenomanian ~ | |
---|---|
Type | Geological formation |
Lithology | |
Primary | Phosphorite |
Other | Sandstone |
Location | |
Coordinates | 50°54′N 44°42′E / 50.9°N 44.7°ECoordinates: 50°54′N 44°42′E / 50.9°N 44.7°E |
Approximate paleocoordinates | 43°06′N 38°48′E / 43.1°N 38.8°E |
Region | Volgograd Oblast |
Country | Russia |
Type section | |
Named for | Melovatka |
Melovatka Formation (Russia) |
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.[1]
Fossil content[]
The following vertebrate fossils were reported from the formation:[1]
- Cerebavis cenomanica
- Cretolamna appendiculata
- Edaphodon sedgwicki
- Eostriatolamia subulata
- Ischyodus latus
- Paraorthacodus recurvus
- Synechodus dispar
- Lonchodectes sp.
- Odontaspis sp.
- Squatina sp.
- ?Platypterygius sp.
- Chelonioidea indet.
- Chimaeridae indet.
- Elasmosauridae indet.
- Ornithocheiroidea indet.
- Osteichthyes indet.
- Pliosauridae indet.
See also[]
References[]
- ^ a b Melovatka 3 at Fossilworks.org
Categories:
- Geologic formations of Russia
- Cretaceous Russia
- Cenomanian Stage
- Sandstone formations
- Phosphorite formations
- Paleontology in Russia
- Geology of European Russia
- Geography of Volgograd Oblast