El Gavilán Formation
29 distinct taxa, from 36 fossil occurrences the Paleobiology Database records under this name, spanning 510–505 Mya.
Sonora · MX
29 taxa · 36 fossils · 510–505 MyaFiled under the San José de Gracia Group. Members recorded: F.
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2 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
- Acrothele concava
- Prototreta
- Acrothele
- Agnostida
- Archiasterella
- Bathyuriscus
- Chancelloria eros
- Dictyonina
- Dictyonina minutipuncta
- Ehmaniella
- Elrathina
- Elrathina cordillerae
- Elrathina parallela
- Eoobolus
- Eothele
- Gogia granulosa
- Hadrotreta
- Helcionella
- Hexactinellida
- Hyolithes
- Kootenia
- Lingulella
- Linnarssonia
- Oryctocara
- Oryctocephalus
- Pagetia
- Pentagnostus bonnerensis
- Peronopsis
- Tonkinella valida
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.