Löwenstein Formation

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Löwenstein Formation
Stratigraphic range: Mid Norian (Alaunian) 215.6–212 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Keuper
Underlies	Trossingen Formation
Overlies	Mainhardt Formation
Thickness	At least 80 m
Lithology
Primary	Sandstone
Other	Marl
Location
Region	Europe
Country	Germany  Switzerland
Extent	Bavaria, Baden-Württemberg

The Löwenstein Formation (Stubensandstein in Baden-Württemberg, Burgsandstein in Bavaria) is a lithostratigraphic formation of the Keuper in Germany. It is underlain by the Mainhardt Formation and overlain by the Trossingen Formation. It dates back to the middle Norian.^[1]

Theropod tracks and an unnamed herrerasaur genus are known from the Lower Stubensandstein.^[2]

Archosaurs of the Stubensandstein
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Aetosaurus	A. feratus A. crassicauda		Lower
Apatosuchus	A. orbitoangulatus		Lower	"Partial skull"
Dolichosuchus[3] Dubious	D. cristatus[3]		Middle[3]	"Tibia"[4]	Actually indeterminate coelophysoid remains[3]
Efraasia	E. minor		Lower
Halticosaurus[3] Dubious	H. longotarsus[3]		Middle[3]	"Mandibular fragment, vertebrae, humerus, illium, femur, metatarsal."[4]	Later found to be indeterminate coelophysoid remains[3]
Liliensternus	L. liliensterni
Mystriosuchus	M. ?
Nicrosaurus	N. kapffiN. meyeri		Middle
Paratypothorax	P. andressi		Middle
Plateosaurus[5]	P. gracilis[5]		Middle[3] Lower[2]	"[Twenty one] partial skeletons, isolated elements, [three] partial skulls, juvenile to adult."[6]	Yates assigned the type material of Sellosaurus gracilis to Plateosaurus gracilis [7]
Procompsognathus[3]	P. triassicus[3]		Middle[3]	"Partial postcranial skeleton."[8]
Saltoposuchus	S. connectens S. longipes
TanystrosuchusDubious	T. posthomus		Middle	" Neck vertebra"
Teratosaurus[3]	T. suevicus[3]		Middle[3]		Galton and Benton showed that Teratosaurus is actually a rauisuchian.[9][10]

• Cyclotosaurus
• Metoposaurus

• List of dinosaur-bearing rock formations
• List of fossiliferous stratigraphic units in Germany
• List of fossiliferous stratigraphic units in Switzerland

• Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21