Riley Formation
70 distinct taxa, from 593 fossil occurrences the Paleobiology Database records under this name, spanning 505–494 Mya.
Texas · US
70 taxa · 593 fossils · 505–494 MyaMembers recorded: Cap Mountain, Lion Mountain, Hickory, Cap Mountain Limestone.
Macrostrat places this rock in the Moore Hollow Group. Macrostrat’s own record
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11 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
- Porifera
- Aphelaspis walcotti
- Opisthotreta depressa
- Tricrepicephalus coria
- Coosella
- Kormagnostus seclusus
- Angulotreta triangularis
- Kinsabia variegata
- Coosina ariston
- Diraphora
- Bolaspidella
- Coosia
- Glaphyraspis ornata
- Meteoraspis metra
- Cedarina cordillerae
- Cheilocephalus brevilobus
- Apsotreta expansa
- Kingstonia pontotocensis
- Dunderbergia variagranula
- Labiostria conveximarginata
- Cedaria eurycheilos
- Menomonia
- Crepicephalus australis
- Dictyonina perforata
- Llanoaspis
- Syspacheilus
- Blountia
- Llanoaspis modesta
- Paterina
- Pseudagnostus
- Tricrepicephalus texanus
- Tricrepicephalus
- Arcuolimbus convexus
- Dytremacephalus granulosus
- Hardyoides tenerus
- Meteoraspis
- Pseudagnostus communis
- Aphelaspis spinosa
- Leperditiidae
- Modocia oweni
The 40 most often recorded, of 70.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.