Hornbrook Formation
25 distinct taxa, from 39 fossil occurrences the Paleobiology Database records under this name, spanning 101–66 Mya.
California, Oregon · US
25 taxa · 39 fossils · 101–66 MyaMembers recorded: Osburger Gulch, Blue Gulch, Ditch Creek, Osburger Gulch Sandstone.
Macrostrat dates this rock 85–71 Ma. Macrostrat’s own record
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7 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
- Calva (Egelicalva) spissa
- Meekia (Meekia) radiata
- Subprionocyclus neptuni
- Turritella hearni
- Bernaya (Protocypraea) argonautica
- Confusiscala sulfurea
- Latiala californica
- Louella fitchi
- Yaadia californiana
- Anchura (Helicaulax) condoniana
- Aphanoptyxis californica
- Atira popenoei
- Cymbophora gabbiana
- Drilluta sicca
- Gymnarus manubriatus
- Latiala
- Mesopuzosia indopacifica
- Natica conradiana
- Paosia californica
- Praesargana condoni
- Pyropsis aldersoni
- Subprionocyclus
- Trigonarca jacksonensis
- Trochocyathus oregonensis
- Willimactra (Willimactra) putida
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.