Makah Formation

Makah Formation
Makah Formation
Stratigraphic range: Late Eocene to Early Oligocene PreꞒ Ꞓ O S D C P T J K Pg N
	Fossil of Branchioplax from the Makah Formation
Type	Formation
Unit of	Twin River Group
Underlies	Pysht Formation
Overlies	Hoko River Formation
Lithology
Primary	Sandstone, siltstone
Location
Region	Washington (state)
Country	United States
Type section
Named for	Makah Reservation
Named by	Snavely et al, 1980

The Makah Formation is a geologic formation in Washington (state). It was deposited during the late Paleogene period between the late Eocene and early Oligocene epoches, and preserves marine fossils dating to the early Oligocene. It outcrops at the northwestern edge of the Olympic Peninsula.^[1]^[2]

Vertebrate paleobiota

The following fossil taxa are known:^[2]

Mammals of the Makah Formation
Genus	Species	Presence	Material	Notes	Images
Fucaia	F. buelli			An aetiocetid baleen whale.
Mysticeti indet.				A baleen whale of uncertain affinities.

Birds of the Makah Formation
Genus	Species	Presence	Material	Notes	Images
Galliformes indet.			Skull	A landfowl of uncertain affinities.
Klallamornis	K. buchanani			A plotopterid suliform.
Klallamornis	K. clarki			A plotopterid suliform.
Makahala	M. mirae			An early tubenose seabird.^[3]
?Phalacrocoracoidea indet.				An indeterminate relative of cormorants and darters.
Tonsala	T. hildegardae			A plotopterid suliform.

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.

^ "Geolex — Makah publications". ngmdb.usgs.gov. Retrieved 2024-11-21.
^ ^a ^b "PBDB". paleobiodb.org. Retrieved 2024-11-21.
^ Mayr, Gerald (2022), Mayr, Gerald (ed.), "Phaethontiformes and Aequornithes: The Aquatic and Semi-aquatic Neaovian Taxa", Paleogene Fossil Birds, Cham: Springer International Publishing, pp. 117–152, doi:10.1007/978-3-030-87645-6_7, ISBN 978-3-030-87645-6, retrieved 2024-11-21

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Makah Formation
Stratigraphic range: Late Eocene to Early Oligocene PreꞒ Ꞓ O S D C P T J K Pg N
Fossil of Branchioplax from the Makah Formation
Type	Formation
Unit of	Twin River Group
Underlies	Pysht Formation
Overlies	Hoko River Formation
Lithology
Primary	Sandstone, siltstone
Location
Region	Washington (state)
Country	United States
Type section
Named for	Makah Reservation
Named by	Snavely et al, 1980