RANCHO LA BREA MOLLUSKS

              CLASS BIVALVIA

              Subclass Paleoheterodonta

              Order Unionoida

Family Unionidae

        Anodonta californiensis Lea, 1852

               Subclass Heterodonta

               Order Veneroida

Family Cardiidae

        Trachycardium quadragenarium (Conrad, 1837) ‡

        Laevicardium elatum (Sowerby, 1835) ‡

Family Donacidae

        Donax gouldii Dall, 1921

Family Lucinidae

        Epilucina californica (Conrad, 1837) ‡

Family Mactridae

        Tresus nuttalli (Conrad, 1837) ‡

Family Pisidiidae (=Sphaeriidae)

        Pisidium casertanum (Poli, 1795)

        P. compressum Prime, 1852

        Musculium lacustre (Müller, 1774)

        Musculium cf. M. partumeium (Say, 1822)

Family Veneridae

        Transennella sp.

        Tivela stultorum (Mawe, 1823) ‡

        Saxidomus nuttalli Conrad, 1837 ‡

        Chione californiensis (Broderip, 1835) ‡

        C. undatella (Sowerby, 1835) ‡

              Order Myoida

Family Corbulidae

        Corbula luteola Carpenter, 1864

              Subclass Pteriomorphia

              Order Pterioida

Family Ostreidae

        Ostrea lurida Carpenter, 1864 ‡

Family Pectinidae

        Argopecten circularus aequisulcatus (Carpenter,1864) ‡

        gen. & sp. indet.

              CLASS GASTROPODA

              Subclass Prosobranchia

              Order Archeogastropoda

Family Acmaeidae

        Notacmaea insessa (Hinds, 1843)

Family Haliotidae

        Haliotis rufescens Swainson, 1822 ‡

Family Trochidae

        Lirularia optabilis (Carpenter, 1864) †

Family Turbinidae

        Astraea undosa (Wood, 1828) ‡

              Order Mesogastropoda

Family Hydrobiidae

        Pyrogulopsis californiensis (Gregg and Taylor, 1965)

Family Lacunidae

        cf. Lacuna sp.

Family Naticidae

        Lunatia lewisii (Gould, 1847) ‡

Family Rissoidae

        Alvinia compacta (Carpenter, 1864)

Family Valvatidae

        Valvata humeralis Say, 1829

              Order Neogastropoda

Family Columbellidae

        Mitrella carinata (Hinds, 1844)

        Nassarina penicillata (Carpenter, 1864)

Family Olividae

        Olivella baetica (Carpenter, 1864)

        Olivella cf. 0. biplicata (Sowerby, 1825)

              Subclass Pulmonata

              Order Basommatophora

Family Lymnaeidae

        Fossaria modicella (Say, 1825)

        F. parva (Lea, 1841)

        Fossaria  (Bakerilymnaea) bulimoides (Lea, 1841)

        F. (B.) cockerelli (Pilsbry and Ferris, 1906)

        F. (B.) cubensis (Pfeiffer, 1839)

        F. (B.) sonomaensis (Hemphill in Pilsbry and Ferris, 1906)

        Stagnicola elodes (Say, 1821)

        S.  proxima (Lea, 1856)

Family Physidae

        Physella concolor (Haldeman, 1841)

Family Planorbidae

        Gyraulus circumstriatus (Tryon, 1866)

        G. parvus (Say, 1824)

        Planorbella tenuis (Dunker, 1850)

        Menetus opercularis (Gould, 1847)

              Order Stylommatophora

Family Discidae

        Discus whitneyi (Newcomb, 1864)

Family Helminthoglyptidae

        Helminthoglypta traskii (Newcomb, 1861)

Family Limacidae

        Deroceras laeve (Müller, 1774)

Family Punctidae

        Punctum californicum Pilsbry, 1898

Family Pupillidae

        Pupilla hebes (Ancey, 1881)

        Vertigo occidentalis Sterki, 1907

Family Succineidae

        gen. & sp. indet.

Family Urocoptidae

        Holospira sp.

Family Valloniidae

        Vallonia cyclophorella Sterki, 1892

Family Zonitidae

        Zonitoides arboreus (Say, 1816)

        Striatura pugetensis (Dall, 1895)

Taxonomy of freshwater/terrestrial species from

identifications by A. G. Smith, California Academy

of Science, written comm. 1972; W. 0. Gregg 1944;

C. C. Coney pers. comm. 1987; R. V. Lamb pers.

comm. 1987; D. W. Taylor pers. comm. 1986; B. Roth

pers. comm. 1987; marine/artifactual species from R. L.

Reynolds pers. comm. 1983; R. V. Lamb pers. comm.

1987; J. McLean pers. comm. 1987; D. Lindberg pers.

comm. 1987.