Severn Formation
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| Severn Formation | |
|---|---|
Stratigraphic range: | |
| Type | Geological 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.[1]
Dinosaurs
- "Coelosaurus" antiquus[2]
- Ornithomimidae indet.[3]
- Hadrosauridae indet.[2][3]
Plesiosaurs
Mosasaurs
- Halisaurus platyspondylus[4][2]
- Prognathodon rapax[2]
- Mosasaurus hoffmanni[2]
- Mosasaurus sp.[3]
- cf. Mosasaurus conodon[2]
- Mosasauridae indet.[2]
Crocodylomorphs
Turtles
Chondrichthyans
- Carcharias holmdelensis[3]
- Carcharias samhammeri[3]
- Chiloscyllium greeni[3]
- Cretalamana appendiculata[3]
- Dasyatis sp.[3]
- Tomewingia problematica[3]
- Galeorhinus garadoti[3]
- Ginglymostoma sp.[3]
- Heterodontus sp.[3]
- Hybodus sp.[3]
- Ischyrhiza cf. avonicola[3]
- Ischyrhiza mira[3]
- Myliobatis sp.[3]
- Odontaspis aculeatus[3]
- Plicatoscyllium antiquum[3]
- Plicatoscyllium derameei[3]
- Pseudohypolophus mcnultyi[3]
- Ptychotrygon vermiculata[3]
- Raja farishi[3]
- Rhinobatos sp.[3]
- Rhombodus binkhorsti[3]
- Serratolamna serrata[3]
- Squalicorax kaupi[3]
- Squalicorax pristodontus[3]
- Squatina hassei[3]
- Ischyodus sp.[3]
