Hidden Valley Formation
32 distinct taxa, from 32 fossil occurrences the Paleobiology Database records under this name, spanning 433–427 Mya.
California · US
32 taxa · 32 fossils · 433–427 MyaLoading coastlines…
1 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
- Aegiria
- Ancillotoechia berryi
- Ancillotoechia perryi
- Coolinia sulcata
- Cyrtia
- Dicoelosia alticavata
- Eoplectodonta
- Eoplectodonta california
- Eospinatrypa sagana
- Flabellitesia kessei
- Gotatrypa altera
- Gypidula biloba
- Harpidium (Isovella)
- Janius occidentalis
- Kirkidium (Pinguaella) macallisteri
- Leptaena (Leptaena) depressa
- Lissatrypa
- Merista
- Nucleospira
- Proschizophoriidae
- Resserella canalis
- Reticulatrypa ryanensis
- Rhipidium (Pararhipidium) filicostatum
- Rhynchotreta americana
- Septatrypa
- Skenidioides operosa
- Spirigerina
- Spirinella pauciplicata
- Stegerhynchus estonicus
- Stropheodontidae
- Vosmiverstum wenlockum
- Zygatrypa stenoparva
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.