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Fresh-water molluscs from New Mexico and vicinity

Fresh-water molluscs from New Mexico and vicinity,D. W. Taylor

Fresh-water molluscs from New Mexico and vicinity   (Citations: 16)
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Published in 1987.
Cumulative Annual
    • ...It also differs from these species in lacking a seminal receptacle, a character which it uniquely shares with P. arizonae (Taylor, 1987) (see Taylor 1987, fig. 15d, e), and in its mitochondrial DNA sequences (Table 2). Pyrgulopsis fresti is further differentiated from P. bruneauensis Hershler, 1990, the only other congener endemic to thermal springs in the Snake River basin, by its larger penial lobe and shorter penial filament (compare ...
    • ...It also differs from these species in lacking a seminal receptacle, a character which it uniquely shares with P. arizonae (Taylor, 1987) (see Taylor 1987, fig. 15d, e), and in its mitochondrial DNA sequences (Table 2). Pyrgulopsis fresti is further differentiated from P. bruneauensis Hershler, 1990, the only other congener endemic to thermal springs in the Snake River basin, by its larger penial lobe and shorter penial filament (compare ...

    ROBERT HERSHLER. New species and records of Pyrgulopsis (Gastropoda: Hydrobiidae) from ...

    • ...Pecos assiminea (Turgeon et al., 1998), was described from a small number of sites in the upper Pecos River basin near Roswell, New Mexico (including the type locality); lower segment of this watershed near Fort Stockton, Texas; and Cuatro Cienegas basin, Coahuila (Mexico), which drains (in part) to the Rio Grande (Taylor, 1987)...
    • ...Taylor (1987) clearly differentiated A. pecos from its North American congeners on the basis of its strongly rounded shell whorls, deep suture, absence of a subsutural thread, and broad umbilicus...
    • ...However, conspecificity of the widely separated populations assigned to A. pecos was not convincingly demonstrated in this study as the only (shell) morphological data provided were from topotypes and all but one of the figured specimens were also from the type locality (Taylor, 1987: Table 1, Fig. 2a‐d)...
    • ...The fossil record of the Pecos assiminea consists of a few Holocene collections from sites closely proximal to extant colonies (Taylor, 1987) and does not provide insight into the timing of population isolation...
    • ...Taylor (1987) suggested that this snail may be widespread in both the western (internal drainage) and eastern (Rio Salado drainage) portions of the Cuatro Cienegas basin based on the occasional occurrence of empty shells in aquatic collections...

    Robert Hershleret al. Genetic and morphologic variation of the Pecos assiminea, an endangere...

    • ...The present-day members of this gastropod fauna are considered relicts whose distributions trace Neogene drainages that were fragmented by subsequent changes in cHmate and landscape (Taylor 1964,1985,1987)...
    • ...[Taylor (1987) suggested that extant congeners are of Miocene age.] If the broadly disjunct populations of T. porrecta are relicts that have long been isolated from one another in accordance with the traditional biogeographical model, then substantial genetic divergence is expected...

    R. HERSHLERet al. Genetic variation in the Desert Springsnail (Tryonia porrecta): implic...

    • ...Endemic faunas of these snails have been a focus of various biogeographical studies (Thompson 1968; Johnson 1973; Taylor 1985, 1987; Hershler & Pratt 1990)...
    • ...Taylor (1987) later described 11 new species as members of Fontelicella and erected two monotypic genera (Apachecoccus, Yaquicoccus) for species from southern Arizona...

    Robert Hershleret al. Phylogenetic relationships of North American nymphophiline gastropods ...

    • ...Assiminea sucdnea (Pfeiffer, 1840) lives along the Atlantic and Gulf of Mexico coasts (Keen, 1971); Assiminea californica (Tryon, 1865) ranges along the Pacific and Gulf of California margins (Abbott, 1974); and three inland species are distributed in the DVLCR {Assiminea infima Berry, 1947) and Rio Grande basin (Assiminea cienegensis Hershler et al, 2007; Assiminea pecos Taylor, 1987), where they typically live in moist riparian habitats ...
    • ... of Mexico coasts (Keen, 1971); Assiminea californica (Tryon, 1865) ranges along the Pacific and Gulf of California margins (Abbott, 1974); and three inland species are distributed in the DVLCR {Assiminea infima Berry, 1947) and Rio Grande basin (Assiminea cienegensis Hershler et al, 2007; Assiminea pecos Taylor, 1987), where they typically live in moist riparian habitats along the margins of highly mineralized springs (Hershler, 1987; Taylor, ...

    Robert Hershleret al. gastropods of the Death Valley-lower Colorado River region: relicts of...

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