Trossingen Formation

Trossingen Formation
Stratigraphic range: Upper Triassic
TypeGeological formation

The Trossingen Formation, formerly the Knollenmergel, is a geological formation in Germany. It dates back to the late Norian.[1]

Vertebrate fauna

Dinosaurs of the Trossingen Formation
Taxa Presence Notes Images


  1. Indeterminate remains.[1]
  1. Includes cf. Liliensternus .[1]
Plateosaurus specimens from Trossingen


  1. P. engelhardti[1]
  1. Includes P. longiceps, P. fraasianus, P. integer, P. trossingensis.[1][2][3][4][5][6]


  1. Indeterminate remains.[1]
  1. Includes Plateosaurus erlenbergiensis, P. plieningeri, P. quenstedti and, Gresslyosaurus robustus. "Pachysaurus" species P. ajax, P. giganteus, P. magnus, P. reiningeri, and P. wetzelianus[1] Several of these belong to Plateosaurus engelhardti

Pterospondylus trielbae - "Vertebra."[7]

Other sources identify:

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
Dinosaurs reported from the Knollenmergel Formation
Genus Species Location Stratigraphic position Material Notes Images


G. ingens

"Incomplete sacrum, caudals, metacarpal, partial hindlimb."[9]

G. torgeri[8]

"Postcranial skeleton."[9]

Indeterminate prosauropod remains.[8] A referred skull was once known but has since been lost.[9]


H. liliensterni[11]

H. longotarsus[12]

Indeterminate ceratosaur remains.[12]


L. liliensterni[11]

Two partial skeletons of subadults.[13]

"(=Halticosaurus liliensterni)"[11]


P. ajax

"Partial skeleton."[9]

P. magnus

"Fragmentary skeleton."[9]

P. wetzelianus

"Fragmentary skeletons."[9]


P. diagnosticus[14]

Actually Plateosaurus longiceps remains.[12]


P. erlenbergiensis

"Partial skull and skeleton."[16]

P. longiceps[15]

Includes "cf. Palaeosaurus ?diagnosticus."[12]

P. plieningeri

"Partial skeleton."[16]

P. quenstedti

"Partial skeleton."[16]


R. bedheimensis[11]

"Nearly complete skeleton, [two] incomplete skeletons, juvenile to adult."[18]

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