St Mary's Formation
81 distinct taxa, from 179 fossil occurrences the Paleobiology Database records under this name, spanning 12–5.3 Mya.
Maryland, Virginia · US
81 taxa · 179 fossils · 12–5.3 MyaFiled under the Chesapeake Group. Members recorded: Windmill Point, Little Cove Point.
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3 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
- Chesapecten
- Crucibulum (Dispotaea) costata
- Turridae
- Corbula inaequalis
- Crepidula fornicata
- Dallarca idonea
- Mariacolpus plebeia
- Yoldia laevis
- Astyris communis
- Dosinia acetabulum
- Ensis directus
- Euspira heros
- Hastula simplex
- Hiatella arctica
- Neverita duplicatus
- Anomia
- Chesacardium laqueatum
- Cirripedia
- Dentalium attenuatum
- Lucinoma contracta
- Mactrodesma subponderosa
- Mulinia congesta
- Nassarius (Tritiaria)
- Nassarius (Tritiaria) peralta
- Nucula taphria
- Pandora (Clidiophora) crassidens
- Saccella
- Tellina (Moerella)
- Turritella subvariabilis
- Bulliopsis marylandica
- Busycon
- Caryocorbula cuneata
- Crassostrea
- Decapoda
- Ecphora
- Lirophora (Lirophora) latilirata
- Mercenaria
- Mercenaria tetrica
- Turritella
- Volutifusus mutabilis
The 40 most often recorded, of 81.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.