Tachilni Formation
56 distinct taxa, from 273 fossil occurrences the Paleobiology Database records under this name, spanning 12–3.6 Mya.
Alaska · US
56 taxa · 273 fossils · 12–3.6 MyaMacrostrat dates this rock 7.2–5.3 Ma. Macrostrat’s own record
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10 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
- Clinocardium
- Mya (Mya) truncata
- Bivalvia
- Beringius
- Clinocardium (Clinocardium) meekianum
- Cyclocardia
- Macoma
- Cryptonatica affinis
- Glycymeris grewingki
- Mactromeris polynyma
- Macoma (Macoma)
- Mya (Arenomya) elegans
- Naticidae
- Neptunea (Neptunea)
- Spisula
- Buccinum
- Neptunea
- Acila (Truncacila) castrensis
- Gastropoda
- Macoma astori
- Oenopota
- Siliqua alta
- Yoldia (Cnesterium) aeolica
- Acila (Truncacila)
- Clinocardium (Clinocardium) pristinum
- Diplodonta parilis
- Mactromeris albaria
- Mactromeris brevirostrata
- Mytilus (Crenomytilus) coalingensis
- Panomya
- Polinices (Euspira) pallidus
- Clinocardium (Ciliatocardium) ciliatum
- Macoma (Macoma) golikovi
- Mizuhopecten
- Molopophorus
- Musculus niger
- Periploma (Periploma)
- Echinarachnius ungaensis
- Leukoma staleyi
- Margarites (Pupillaria)
The 40 most often recorded, of 56.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.