Lexington Formation
79 distinct taxa, from 123 fossil occurrences the Paleobiology Database records under this name, spanning 457–450 Mya.
Kentucky, Minnesota · US
79 taxa · 123 fossils · 457–450 MyaMembers recorded: Grier, Brannon, Stamping Ground, Perryville, Logana, Curdsville, Sulphur Well, curdsville.
Macrostrat dates this rock 456–450 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
- Cyrtolites retrorsus
- Carinaropsis cymbula
- Lophospira perangulata
- Bucanopsis carinifera
- Sinuites obesa
- Rhynchotrema increbescens
- Sphenosphaera rogersensis
- Alaskadiscus subacutus
- Arabellites
- Archinacella simulatrix
- Bucania sublata
- Hebertella frankfortensis
- Isotelus gigas
- Liospira micula
- Lophospira milleri
- Oncoceras
- Pattersonia
- Pionomena recens
- Sowerbyella grierensis
- Sphenosphaera burginensis
- Sphenosphaera troosti
- Zygospira
- Allumettoceras tenerum
- Ambonychia
- Amygdalocystites radiatus
- Autoloxolichas halli
- Bellerophontoidea
- Brachiospongia digitata
- Bucania rugatina
- Bucania subangulata
- Ceratopsis chambersi
- Clathrospira conica
- Clathrospira subconica
- Climacograptus putillus
- Constellaria
- Conularia
- Ctenodonta logani
- Ctenodonta obliqua
- Cupulocrinus
- Cyclonema minuta
The 40 most often recorded, of 79.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.