Severn Formation

The Severn Formation is a Mesozoic geologic formation in Maryland. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.

Paleofauna

[Dinosaur]s

"Coelosaurus" antiquus

Ornithomimidae indet.
Hadrosauridae indet.

[Mosasaur]s

Halisaurus platyspondylusPrognathodon rapaxMosasaurus hoffmanni

Crocodylomorphs">Crocodylomorpha">Crocodylomorphs

Deinosuchus rugosusThoracosaurus neocesariensis

Alligatorinae indet.

Chondrichthyans">Chondrichthyes">Chondrichthyans

Carcharias holmdelensisCarcharias samhammeriChiloscyllium greeniCretalamana appendiculataDasyatis sp.Tomewingia problematicaGaleorhinus garadotiGinglymostoma sp.Heterodontus sp.Hybodus sp.Ischyrhiza cf. avonicolaIschyrhiza miraMyliobatis sp.Odontaspis aculeatusPlicatoscyllium antiquumPlicatoscyllium derameeiPseudohypolophus mcnultyiPtychotrygon vermiculataRaja farishiRhinobatos sp.Rhombodus binkhorstiSerratolamna serrataSqualicorax kaupiSqualicorax pristodontusSquatina hassei

''Ischyodus sp.''

Osteichthyans">Osteichthyes">Osteichthyans

Albuidae indet.Anomoedus cf. haseolusCylinadracanthus sp.Egertonia sp.Enchodus feroxHadrodus sp.Lepidosteus sp.
''Paralbula casei''