Mulichinco Formation

The Mulichinco Formation is a geological formation in Argentina. It is Valanginian in age and is predominantly terrestrial, being deposited at a time of marine regression in the Neuquén Basin, and predominantly consists of siliciclastic rocks.^[1]

Mulichinco Formation
Stratigraphic range: Valanginian ~140–136 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Mulichinco Formation at Puerta Curaco
Type	Geological formation
Unit of	Mendoza Group
Underlies	Agrio Formation
Overlies	Vaca Muerta
Thickness	200–400 metres (660–1,310 ft)
Lithology
Primary	Mudstone, siltstone, sandstone
Other	Limestone
Location
Coordinates	38.5°S 70.2°W / -38.5; -70.2
Approximate paleocoordinates	37.8°S 33.5°W / -37.8; -33.5
Region	Neuquén Province
Country	Argentina
Extent	Neuquén Basin
Mulichinco Formation (Argentina)

Fossil content

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Ornithopods

Ornithopods of the Mulichinco Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Emiliasaura[2]	E. alessandrii				A iguanodontian ornithopod

Sauropods

Sauropods of the Mulichinco Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Pilmatueia[3][4]	P. faundezi				A dicraeosaurid sauropod

Theropods

Theropods of the Mulichinco Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Lajasvenator[5]	L. ascheriae				A carcharodontosaurid theropod

Echinoderms

Echinoderms of the Mulichinco Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Tethyaster[6]	T. antares				A astropectinid starfish

Plants

Plants of the Mulichinco Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Tempskya[7]	T. dernbachii				A tree fern