U. S. DEPARTMENT OF THE INTERIOR U. S. GEOLOGICAL SURVEY OPEN-FILE REPORT 98-594

TABLE 12.-- Published Purisima Formation Fauna Santa Cruz (Nikas, 1977; Addicott and others, 1978b) San Mateo County (Ashley, 1895b; Arnold, 1908a) 1 Taxonomic studies (Carson, 1926; Kennedy, 1974; Woodside quadrangle (Esser, 1958; Mack, 1959) San Mateo County (Durham and Morgan, 1978) Año Nuevo area (Ashley, 1895a; Martin, 1916) Sargent’s oil field (Martin, 1916; Allen, 1945) Moss Beach (Martin, 1916; Glen, 1959) San Gregorio Member (Touring, 1959) Santa Cruz Mountains (Clark, 1981) Pomponio Member (Touring, 1959) Lobitos Member (Touring, 1959) Tunitas Member (Touring, 1959) Tahana Member (Touring, 1959)

TAXA/OCCURENCE Point Ryes (Galloway, 1977) Santa Cruz (Ashley, 1895a) Santa Cruz (Arnold, 1908a) Santa Cruz (Perry, 1993) Pilar Point (Glen, 1959) Nations, 1975)

BRACHIOPODA ARTICULATA Discinisca sp. ------x- - INARTICULATA Terebratalia arnoldi etchegoini Hertlein & Grant ------x - POLYPLACOPHORA Cryptochiton stelleri Middendorff ------x--x-x---- - BIVALVIA Acila castrensis (Hinds) ------xxx-xxx-x--x - Nuculana taphria (Dall) x------x-----x--- - Yoldia cooperi (Dall) -x------x---sp.-xsp.xx - Y. scissurata Dall ---x-----x----aff.---- Y. thraciaeformis (Storer) ---xx-xx------Anadara trilineata (Conrad) -x------x-xx-xxxxx- Glycymeris coalingensis Arnold ------xx - G. septentrionalis (Middendorff) ------x - G. sp. ------x---x - Megacrenella columbiana (Dall) ------x------cf.-- Modiolus rectus (Conrad) ------sp.--x-x-sp.xx - M. sp. ------x-- - Mytilus coalingensis Arnold -cf.-----xsp.------x - M. sp ------Lima sp. ---x------Chlamys hastata (Sowerby) ------x-x- - C. hastata hericius (Gould) ------x------Nanaochlamys nutteri (Arnold) -x------x-x---x--x - Swiftopecten parmeleei (Dall) s.l. -x------xx------xx - Lituyapecten falorensis MacNeil ------x------L. purisimaensis (Arnold) -?x-?- -xxxx- - -x- - - - L. turneri (Arnold) ------xx------Patinopecten caurinus (Gould) ------x---- - P. healeyi (Arnold) ----aff.--xxx---?x--- - P. lohri (Hertlein) -x---xx-x------x - Pycnodonte erici (Hertlein)? -----x------Dendostrea? vespertina (Conrad) ------x - Lucinoma annulata (Reeve) x x x - - - x x x - x - cf. cf. x cf. x x - Lucinisca nuttalli (Conrad) ------x-----x--- - L. nuttalli antecedens Arnold ------x------Lucinid indet. ------Conchocele disjuncta Gabb --x------Cyclocardia californica (Dall) fide Woodring & ------x---x------sp.- Bramblette Clinocardium meekianum (Gabb) s.l. -x------x--x-xxxxx - C. nuttallii (Conrad) ---x-x--sp.x---x---- - Pseudocardium densatum (Gould) -x------Macromeris albaria (Conrad) -----xxxxx---?xxxx- M. catilliformis Conrad ---cf.----x------M. coalingensis (Arnold) ------x - M. hemphilli (Dall) -x------x-----x--- - M. mossbeachensis Glen -x------M. polynyma (Stimpson) ------?------x - M.? sp. ------x------xx- - Simomactra falcata (Gould) ------x---x - Tresus nuttallii (Conrad) -x------x----x---x - T. pajoroanus (Conrad) - x- - xxxxx- xx- xxxxx - Siliqua alta (Broderip & Sowerby) -cf.---cf.------sp.sp.-- S. lucida (Conrad) ------cf.--x - S. patula (Dixon) -x------x----xx--x - Solen sicarius Gould cf.----xxxx-sp.x-x- -xx - Macoma addicotti Nikas ------?-xx- - M. balthica (Linnaeus) ---?----x------M. inquinata (Deshayes) ------x------x - M. lama (Bartsch) ------x----x------M. nasuta (Conrad) -----?x?x--x-x-xxx- M. yoldiformis Carpenter ------?------M. sp. -x------?---x?--xx- Tellina modesta (Carpenter) ------x- - T. nuculoides (Reeve) ------x--- - T. sp. ------x-----x--- - Semele rubropicta Dall ------x - Nuttallia nuttallii (Conrad) ------x------Gari californica (Conrad) ------?---- - Chione securis (Shumard) ------xx----sp.---? - Clementia pretenuis (Gabb) ------x------Compsomyax subdiaphana (Carpenter) - - - xxxxxx- - x- - x- xx - Dosinia jaclitosana Arnold ------?------? - Protothaca staleyi (Gabb) ------x--x-?-xxx- P. staminea (Conrad) -x-----x--x--x---x - P. tenerrima (Carpenter) ------xxx--x-xx-xx - Transennella tantilla (Gould) ------?--sp.x- Cryptomya californica (Conrad) - - -x-xx-x- -x-xxxxx - Mya truncata Linnaeus ------x------sp.- Panomya chrysis Dall -----xxxcf.--x--sp.--x - P. arctica (Lamarck) ------x------Panopea abrupta (Conrad) --sp.----xx--x-?x--x - Barnea subtruncata (Sowerby) ------x- - Zirfaea pilsbryi Lowe -x------x--x--x--x - Penitella penita (Conrad) -cf.-----x------x Parapholas californica (Conrad) -x------x Pandora punctata Conrad ---x----x------xx - Lyonsia? sp. ------Thracia kanakoffi Hertlein & Grant ------x- - T. trapezides Conrad ------x-x-----x-sp.x- Periploma discus Stearns ---xx------ Diodora aspera (Rathke) -cf.------"Acmaea" sp. ------x------Solariella permabilis Carpener ------aff.------Tegula lahondaensis (Arnold) ------xx------Turcica brevis Stewart in Woodring, Stewart & ------x------Richards Margarites? sp. -x------Homalopoma paucicostatum (Dall) ------x--- - Littorina sp. ------x - Bittium sp. ------x-x-x---x--x - Vitrinella sp. ------x- - Serpulorbis squamigerus (Carpenter) ------x------x--- - Calyptraea sp. ----x---x--x--xxxx- Crepidula onyx Sowerby ------x---x-x--- - C. princeps (Conrad) - - - xxxxxx- xx- xxxxx - Cryptonatica affinis (Gmelin, 1791) ------xx----xxxxx- Neverita reclusianus (Deshayes) ------x--xxxx- Polinices lewisii (Gould) xsp.-x--xxx--x-xxxxx- Naticid indet. ------Sinum scopulosum (Conrad) ------sp.-x- - Fusitriton oregonensis (Redfield) ------x-x-----x--- - Mediargo mediocris (Dall) ------x- - Epitonium indianorum Carpenter ------x----sp.-- Ceratostoma foliatum (Gmelin) ------x- - Ocenebra interfossa (Carpenter) -cf.------sp.------Forreria coalingensis (Arnold) ------x?---- - Nucella canaliculata (Duclos) ------x - N.? imperialis (Dall) ------x------N. lima (Gmelin) -cf.------x - N. lamellosa (Gmelin) -x-----xx------xx - N. transcoana Arnold ------xx - pacificus Dall ------x--- - Trophonopsis sp. ------x - Aulacofusus? recurva (Gabb) -cf.------Beringius stantoni (Arnold) ----x-x-x-xx--xxx- - Colus? purisimaensis (Martin) ---x------Kelletia kettlemanensis (Arnold) ------x - andersoni (Martin) ------x----sp.------N. lyrata (Martyn) ------aff.------N. tabulata (Baird) x------xx---xxx--- - Astyris gausapata (Gould) -?------x-xx-xxxxx- Searlesia portolaensis (Arnold) ------x------xxx - Calicantharus humerosa (Gabb) ------x------Nassarius californius (Conrad) ---x--xxx-?--xx-xx- N. grammatus (Dall) ---x---xxx-x--xxxx- Psephaea oregonensis (Arnold) ---x--x-x-xx--x--- - "Voluta" sp. ------Olivella pycna Berry ---?-?--?--?--??x?- Admete gracilior Carpenter ------x--- - Cancellaria arnoldi (Dall) ------sp.-x- - C. oldroydia Carson ------x C. palmeri Carson ------x--xxx Megasurcula carpenteriana (Gabb) x------x--x-xxsp.--- M. remondii (Gabb) ------x- - Antiplanes catalinae (Raymond) ------x------Ophiodermella graciosana Arnold ------x--x---xxx- Odostomia sp. ------x- - Turbonilla sp. ------x- - Rictaxis punctocaelatus (Carpenter) ------Acteocina culcitella (Gould) ------x------Trimusculus reticulatus (Sowerby) ------x------SCAPHOPODA Dentalium sp. -----x------x- - ECHINODERMATA STELLEROIDAE Ophioplocus sp.? x------ASTEROIDAE Piaster sp. ------x- - ECHINOIDEA Dendraster ashleyi (Arnold) -----x------D. gibbsi (Rémond) -----x--x----x--xx - D. sullivani Durham & Morgan ------x------Merrimaster weaveri Durham & Morgan ------spx------Scutellaster oregonensis (Clark) -----x--cf.------Megapetalus loveniodes Clark x------ARTHROPODA CRUSTACEA Balanus aquila Pilsbry ------cf.------B. gregarius (Conrad) ------xx-x------x- - B. nubulis Pilsrby ---cf.--cf.cf.------B. sp. ------x--xx-----x - Callianassa gigas Dana ------x- - Loxorhynchus sp. ------x- - Cancer fissus Rathbun ------x C. marri Nations ------x C. magister Dana ------x- - C. productus Randall ------x- - Stomatopoda indet. ------x- - 1=Localities include Pillar Point, Purisima [Creek?], Lobetus, Tunitas Creek, San Gregorio Crek, and San Gregorio. Note: Names in bold have been confirmed during the present study. Name not in bold still need confirmation.

THE PURISIMA FORMATION AND RELATED ROCKS (UPPER MIOCENE - PLIOCENE), GREATER SAN FRANCISCO BAY AREA, CENTRAL CALIFORNIA Review of literature and USGS collections

by Charles L. Powell, II