Williams Island Formation
42 distinct taxa, from 84 fossil occurrences the Paleobiology Database records under this name, spanning 393–372 Mya.
Ontario, Northwest Territories · CA
42 taxa · 84 fossils · 393–372 MyaMembers recorded: lower shale.
Macrostrat dates this rock 387–384 Ma. Macrostrat’s own record
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4 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
- Desquamatia (Independatrypa)
- Mucrospirifer
- Desquamatia (Desquamatia)
- Cyrtina
- Emanuella
- Belodella
- Coelocerodontus
- Elita
- Polygnathus
- Polygnathus dubia
- Spinatrypina
- Spinocyrtia
- Ancyrodella
- Athyris
- Cyrtina hamiltonensis
- Floweria crassa
- Polygnathus linguiformis
- Schizophoria
- Spinatrypa
- Tylothyris
- Atryparia
- Devonochonetes
- Devonochonetes scitulus
- Echinodermata
- Eostrophalosia
- Gastropoda
- Icriodus
- Icriodus symmetricus
- Ladjia
- Ladogioides
- Leiorhynchus
- Mesotaxis asymmetrica
- Nervostrophia
- Orthospirifer
- Palmatolepis
- Phacops
- Protoleptostrophia
- Rhyssochonetes
- Strophodonta (Strophodonta)
- Strophomena (Strophodonta)
The 40 most often recorded, of 42.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.