Graham Formation
306 distinct taxa, from 3,611 fossil occurrences the Paleobiology Database records under this name, spanning 323–299 Mya.
Texas · US
306 taxa · 3,611 fossils · 323–299 MyaFiled under the Cisco Group. Members recorded: Finis Shale, Wayland, Jacksboro Limestone, Kisinger Channel, Wayland sh, Wayland Shale, Salem School Limestone, Bunger ls, South Bend, Gunsight ls, Gonzales ls, Bunger limestone.
Macrostrat places this rock in the Cisco Group, and dates it 304–300 Ma. Macrostrat’s own record
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33 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
- Crinoidea
- Crurithyris planoconvexa
- Hustedia mormoni
- Kutorginella lasallensis
- Composita subtilita
- Echinoidea
- Gastropoda
- Algae
- Astartella concentrica
- Parajuresania nebrascensis
- Pseudorthoceras knoxense
- Trepospira illinoisensis
- Neospirifer dunbari
- Worthenia tabulata
- Anthozoa
- Lissochonetes geinitzianus
- Glabrocingulum
- Bivalvia
- Derbyia
- Neochonetes granulifer
- Holothuroidea
- Lophophyllidium
- Ostracoda
- Condrathyris perplexa
- Porifera
- Scaphopoda
- Punctospirifer kentuckensis
- Schistoceras missouriense
- Paleyoldia
- Straparollus
- Antiquatonia
- Productidina
- Bactrites
- Glaphyrites modestus
- Kozlowskia
- Nuculopsis girtyi
- Phestia
- Serpulidae
- Linoproductus cora
- Meekospira
The 40 most often recorded, of 306.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.