Severn Formation
330 distinct taxa, from 1,192 fossil occurrences the Paleobiology Database records under this name, spanning 143–66 Mya.
Maryland · US
330 taxa · 1,192 fossils · 143–66 MyaMembers recorded: uppermost, upper.
Macrostrat places this rock in the Monmouth Group. Macrostrat’s own record
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8 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Cymbophora
- Cyprimeria
- Tellinimera
- Crassatella vadosa
- Granocardium
- Perrisonota
- Striarca
- Anomia argentaria
- Caestocorbula
- Cubitostrea tecticosta
- Gabbigonia eufaulensis
- Micrabacia
- Sphenodiscus
- Syncyclonema
- Trachycardium eufaulensis
- Turritella bilira
- Crenella serica
- Dentalium leve
- Discoscaphites conradi
- Hamulus onyx
- Nuculana
- Nuculana rostratruncata
- Paladmete cancellaria
- Urceolabrum tuberculatum
- Aenona eufaulensis
- Euspira rectilabrum
- Hamulus squamosus
- Legumen ellipticum
- Leptosolen biplicata
- Nucula percrassa
- Postligata
- Tenea
- Turritella trilira
- Baculites
- Botula
- Caestocorbula (Caestocorbula) crassaplica
- Corbula
- Corbula monmouthensis
- Gyrodes (Sohlella) spillmani
- Liopistha protexta
The 40 most often recorded, of 330.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.