Canyon River, CR3 (Oligocene of the United States)

Also known as LACMIP 16504, UWBM B6706

Where: Grays Harbor County, Washington (47.3° N, 123.5° W: paleocoordinates 47.0° N, 114.6° W)

• small collection-level geographic resolution

When: Lincoln Creek Formation, Chattian (28.1 - 23.0 Ma)

• "lower part of upper Oligocene part of the formation"

Environment/lithology: basinal (); calcareous, cherty/siliceous limestone

• "upper bathyal depths in cool to cold water", "sponges preserved as silica in a localized cherty and botryoidal, calcareous cement-filled limestone formed at bathyal depths by bacterial oxidation of methane at a cold seep"; whale fall; methane-seep

Size class: macrofossils

Reposited in the LACM

Primary reference: J. K. Rigby and J. L. Goedert. 1996. Fossil sponges from a localized cold-seep limestone in Oligocene rocks of the Olympic Peninsula, Washington. Journal of Paleontology 70(6):900-908 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 4869: authorized by John Alroy, entered by John Alroy on 27.08.1999, edited by Mark Uhen and Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

• no comprehensive list appears to have been published
 Placentalia -
Cetacea indet.6 Brisson 1762 whale
 Chitonida - Chitonidae
"Leptochiton alveolus" = Chiton alveolus
"Leptochiton alveolus" = Chiton alveolus Loven 1846 chiton
 Mytilida - Mytilidae
Mytilidae indet.6 Rafinesque 1815 mussel
Bathymodiolus willapaensis4 Squires and Goedert 1991 mussel
Bathymodiolus satsopensis5 Kiel and Amano 2013 mussel
 Lucinida - Thyasiridae
Conchocele taylori3 Hickman 2015 clam
Conchocele bisecta7 Conrad 1849 clam
 Cardiida - Vesicomyidae
? Pliocardia sp.1 Woodring 1925 clam
 Trochoidea - Solariellidae
? Solariella sp.7 Wood 1842 snail
 Opisthobranchia - Scaphandridae
Scaphandridae indet.7 Sars 1878 snail
 Neogastropoda - Raphitomidae
Xanthodaphne campbellae n. sp.4 Kiel 2006 snail
 Neogastropoda - Buccinidae
Buccinidae indet.6 Rafinesque 1815 true whelk
 Sorbeoconcha - Provannidae
Provanna antiqua Squires 1995 snail
 Sorbeoconcha - Cerithiopsidae
Cerithiopsidae indet.4 Adams and Adams 1853 snail
 Vanikoroidea - Eulimidae
? Eulimidae indet.4 Philippi 1853 snail
 Neomphalida - Neomphalidae
"? Depressigyra statura n. sp." = Retiskenea statura2, "Retiskenea statura" = Retiskenea statura4
"? Depressigyra statura n. sp." = Retiskenea statura2 Goedert and Benham 1999 snail
"Retiskenea statura" = Retiskenea statura4 Goedert and Benham 1999 snail
 Neomphalida - Peltospiridae
? Depressigyra sp.4 Warén and Bouchet 1989 snail
 Hexactinosa - Tretodictyidae
? Hexactinella conica n. sp. glass sponge
? Hexactinella tubula n. sp. glass sponge
 Hexactinosa - Farreidae
? Farrea sp. Bowerbank 1862 glass sponge
 Hexactinosa - Euretidae
Eurete ? geoderti glass sponge