Where: Santa Barbara County, California (34.0° N, 120.0° W: paleocoordinates 32.6° N, 111.8° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Lower Conglomerate Member (Vaqueros Formation), Chattian (28.1 - 23.0 Ma)
• The Vaqueros Formation is subdivided into two units on Santa Cruz Island, a lower conglomerate unit and an upper volcanic arenite. The collection is from the congomerate, which rests disconformably on the upper Eocene variegated shales of the Cozy Dell Formation, is 555 ft thick and comprised primarily of horneblende-diorite clasts.
• member-level stratigraphic resolution
Environment/lithology: coastal; lithified, medium-grained, coarse, shelly/skeletal, sandy, calcareous conglomerate
Size class: macrofossils
Collection methods: quarrying,
• Reported by Bereskin and Edward. Not sure of any repositories.
Primary reference: D. E. Weaver. 1969. Geology of the Northern Channel Islands. American Association of Petroleum Geologists - Pacific Section [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 52417: authorized by Austin Hendy, entered by Austin Hendy on 04.08.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium sp. Linnaeus 1758 tusk shell | |
Bivalvia | |
"Cardium (Trachycardium) vaquerosensis" = Dallocardia vaquerosense
"Cardium (Trachycardium) vaquerosensis" = Dallocardia vaquerosense Arnold 1908 cockle | |
"Dosinia margaritana" = Dosinia (Dosinidia) margaritana Wiedey 1928 venus clam
Dosinia merriami Clark 1915 venus clam
Chione sp. von Mühlfield 1811 venus clam | |
"Mytilus expansus" = Crenomytilus expansus
"Mytilus expansus" = Crenomytilus expansus Arnold 1907 mussel | |
Lyropecten miguelensis Arnold 1906 scallop
"Pecten vanvlecki" = Amussiopecten vanvlecki Arnold 1908 scallop
Spondylus perrini Wiedey 1928 scallop | |
"Ostrea miguelensis" = Acutostrea miguelensis
"Ostrea miguelensis" = Acutostrea miguelensis Hertlein 1928 oyster | |
Gastropoda | |
Calyptraea ? filosa Gabb 1866 slipper shell | |
Trophon sp., "Rapana vaquerosensis" = Califrapana vaquerosensis
Trophon sp. Montfort 1810 murex snail
"Rapana vaquerosensis" = Califrapana vaquerosensis Arnold 1908 murex snail | |
Conus sp. Linnaeus 1758 cone shell | |
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1839 moon snail Subspecies: Polinices recluzianus andersoni
| |
Turritella ocoyana Conrad 1855 turret shell | |
Thecostraca | |
Balanus sp. Da Costa 1778 barnacle | |
Tetraclita sp. Schumacher 1817 barnacle | |
Echinoidea | |
Vaquerosella fairbanksi sand dollar |