Karheen Formation
40 distinct taxa, from 62 fossil occurrences the Paleobiology Database records under this name, spanning 443–393 Mya.
Alaska · US
40 taxa · 62 fossils · 443–393 MyaMacrostrat dates this rock 420–388 Ma. Macrostrat’s own record
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4 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
- Phaulactis
- Cyrtina
- Eognathodus sulcatus
- Eoschuchertella
- Hostinella
- Isorthis
- Kirkirhynchus reesidei
- Monograptus
- Nucleospira hecetensis
- Ozarkodina eberleini
- Pandorinellina
- Pelekysgnathus
- Protathyris
- Reticulariopsis
- Savagerhynchus hecetaensis
- Schizophoria fragilis
- Acanthophyllum
- Atrypa
- Atrypa reticularis
- Atrypella scheii
- Atrypoidea
- Cymostrophia (Protocymostrophia)
- Cystiphyllum
- Dechenella
- Drepanophycus
- Dubovikovia kuzmini
- Eospirifer
- Fasciphyllum
- Gypidula
- Gypidula pelagica
- Harperoides alaskensis
- Howellella
- Howellites amsdeni
- Icriodus
- Linguopugnoides
- Monadotoechia
- Monograptus yukonensis
- Nowakia
- Rugosatrypa flexibilis
- Taimyrophyllum
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.