Word Formation
441 distinct taxa, from 2,189 fossil occurrences the Paleobiology Database records under this name, spanning 274–264 Mya.
Texas · US
441 taxa · 2,189 fossils · 274–264 MyaMembers recorded: Willis Ranch, Appel Ranch, China Tank.
Macrostrat dates this rock 276–269 Ma. Macrostrat’s own record
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8 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
- Meekella skenoides
- Liosotella wordensis
- Cyclacantharia kingorum
- Hustedia
- Echinosteges tuberculatus
- Heteralosia hystricula
- Echinauris lateralis
- Avonia
- Xenosteges quadratus
- Rhamnaria kingorum
- Leptodus
- Richthofenioidea
- Spiriferellina hilli
- Composita enormis
- Composita parasulcata
- Derbyia pannucia
- Dyoros (Dyoros) extensus
- Cooperina inexpectata
- Derbyia filosa
- Dielasma
- Dielasma zebratum
- Liosotella popei
- Marginifera
- Derbyia texta
- Elivina
- Paucispinifera auriculata
- Rhynchopora palumbula
- Collemataria elongata
- Enteletes wordensis
- Meekella attenuata
- Thedusia procera
- Allorhynchus permianum wordense
- Echinosteges guadalupensis
- Reticulariina cerina
- Timaniella pseudocamerata
- Wellerella girtyi girtyi
- Cactosteges anomalus
- Composita affinis
- Dyoros (Lissosia) concavus
- Megousia definita
The 40 most often recorded, of 441.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.