Murdock Creek (Oligocene of the United States)

Also known as LACM 5123, 5412

Where: Clallam County, Washington (48.2° N, 123.9° W: paleocoordinates 47.8° N, 113.0° W)

• coordinate estimated from map

When: Pysht Formation, Rupelian (33.9 - 28.1 Ma)

• lower part of Pysht Formation; Prothero et al. (2001) place the lower Pysht in the early Oligocene (=Rupelian)

•lower part of Pysht For- mation, latest early Oligocene/early late Oligocene (Barnes and Goedert, 2001; Barnes et al., 2001; Prothero et al., 2001), or late Oligocene (Nesbitt et al., 2010). (Mayr et al., 2015)

• formation-level stratigraphic resolution

Environment/lithology: deep-water; siltstone

• deep sea (evidence of whale falls), cold, high pressure

Size class: macrofossils

• Osedax boreholes

Preservation: original phosphate

Reposited in the LACM

Collection methods: surface (in situ),

Primary reference: L. G. Barnes and J. L. Goedert. 2001. Stratigraphy and paleoecology of Oligocene and Miocene desmostylian occurrences in Western Washington State, U.S.A. Bulletin of the Ashoro Museum of Paleontology 2:7-22 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 58964: authorized by Mark Uhen, entered by Mark Uhen on 01.03.2006, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Pectinoidae
Pectinidae indet.5 Wilkes 1810 scallop
 Mytilida - Mytilidae
Idas sp.5 Jeffreys 1876 mussel
n. sp.
Modiolus ? willapaensis2 Squires and Goedert 1991 mussel
 Cardiida - Vesicomyidae
Calyptogena (Calyptogena) chinookensis2 Squires and Goedert 1991 clam
 Lucinida - Thyasiridae
"Conchocele bisecta" = Conchocele conradii5 Rosenkrantz 1942 clam
Conchocele taylori3 Hickman 2015 clam
Thyasira sp.2 Lamarck 1818 clam
 Protobranchia - Nuculanidae
Nuculana sp.5 Link 1807 pointed nut clam
n. sp.
Nuculana posterolaevia4 pointed nut clam
Gastropoda
 Cephalaspidea - Cylichnidae
Scaphander sp.5 Monfort 1810 snail
 Neogastropoda - Buccinidae
Colus sekiuensis4 true whelk
 Neogastropoda - Turridae
Turridae indet.4 Swainson 1840 turrid
 Naticoidea - Naticidae
Naticidae indet.5 Guilding 1834 moon snail
Natica weaveri4 Tegland 1933 moon snail
Scaphopoda
  -
Scaphopoda indet.4 Bronn 1862 tusk shell
 Gadilida - Gadilidae
Cadulus sp.4 Philippi 1844 tusk shell
Aves
 Suliformes - Plotopteridae
Tonsala buchanani n. sp.1, Tonsala hildegardae n. gen. n. sp.6
Tonsala buchanani n. sp.1 Dyke et al. 2011 bird
Tonsala hildegardae n. gen. n. sp.6 Olson 1980 bird
SMF Av 599, 600, 601, 645
Mammalia
 Perissodactyla -
Behemotops proteus Domning et al. 1986 desmostylian
[entered as Behmotops proteus]
 Cetacea -
 Mysticeti -
Crinoidea
 Isocrinida - Isocrinidae
? Isocrinus sp.2 Meyer in Agassiz 1836 Sea lily