Arroyo Formation
76 distinct taxa, from 165 fossil occurrences the Paleobiology Database records under this name, spanning 294–274 Mya.
Texas · US
76 taxa · 165 fossils · 294–274 MyaFiled under the Clear Fork Group.
Macrostrat places this rock in the Clear Fork Group, and dates it 279–277 Ma. Macrostrat’s own record
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9 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
- Captorhinus aguti
- Diplocaulus
- Ophiacodon
- Diplocaulus magnicornis
- Eryops
- Diadectes
- Labidosaurus hamatus
- Trimerorhachis
- Brachydectes
- Brachydectes newberryi
- Captorhinus
- Cardiocephalus sternbergi
- Dimetrodon
- Isodectes obtusus
- Seymouria
- Diadectes tenuitectes
- Dissorophidae
- Dissorophus multicinctus
- Seymouria baylorensis
- Varanosaurus acutirostris
- Zatrachys
- Dimetrodon grandis
- Dimetrodon loomisi
- Diplocaulus brevirostris
- Edaphosaurus
- Eryops megacephalus
- Labidosaurus
- Acheloma
- Acheloma cumminsi
- Anisodexis
- Araeoscelis gracilis
- Artisia
- Aspidosaurus
- Aspidosaurus chiton
- Aviculopecten ballingerana
- Aviculopecten sumnerensis
- Bathyglyptus theodori
- Bolosaurus
- Brachyphyllum
- Broiliellus arroyoensis
The 40 most often recorded, of 76.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.