The Aquatic Invertebrates of Texas

Bivalvia

(Mussels & Clams)

UNIONIDAE

Pyganodon grandis (Say)

Giant Floater

 

 Photogallery: 

 

 

Synonyms:  Anodon corpulens
                   Anodon micans
                   Anodonta bealei
Lea
                                          (Simpson 1900; Simpson 1914)
                   Anodon texasensis
                   Anodonta corpulenta (Cooper)
                                          (Vaughn 1893; Simpson 1900; Simpson 1914; Sublette 1953; Read 1954; Sublette 1955; Murray &
                                            Roy 1968; Little & Gentner 1970; Flook & Ubelaker 1972; RET Inc. 1974)

                   Anodonta corpulenta
                   Anodonta gigantia

                   Anodonta grandis (Say)
                                          (Shira 1913; Simpson 1914; Frierson 1927; Strecker 1931; Parks, Corey et al. 1938; Bachtell 1940;
                                            Riggs & Webb 1956; Murray & Roy 1968; Mauldin 1972; Metcalf & Smart 1972; Britton et al.
                                           1974; Metcalf 1974; RET Inc. 1974; Calnan 1976; Bass 1977; White & White 1977; White & White
                                           1977b; Murray 1978; Bass & Harrel 1981; Golightly 1982; Neck 1982e; Gordon 1984; Neck &
                                           Metcalf 1984; Neck 1985b; Neck FBLT 1986; Neck & Metcalf LRG 1988; Mather 1989; Neck FBAL
                                           1989; Vidrine 1989b; Neck GSA 1990; Neck 1990b; Shafer et al. 1992; Howells DSFB105 1994;
                                           Howells DSFB119 1995; Howells DSFB120 1996; Howells DSFB125 1996b; Howells et al. 1996;
                                           Howells DSFB144 1997; Howells NDS147 1998; Howells DSFB161 1999; Howells 2000)

                  Anodonta grandis bealei Lea
                                          (Strecker 1931; Murray & Roy 1968)
                  Anodonta grandis benedictensis Lea

                                          (Simpson 1900)
                  Anodonta grandis corpulenta
Cooper
                  Anodonta grandis grandis
Say
                                         (Burch 1973; White & White 1977b)
                  Anodonta grandis lugubris
Say
                                         (Murray & Roy 1968; Strecker 1931)
                  Anodonta grandis stewartiana
Lea
                                         (Murray 1978; White & White 1977b)
                  Anodonta leonensis
Lea
                                         (Strecker 1931; Williamson 1896)
                  Anodonta micans
Anthony
                                         (Simpson 1914; Strecker 1931)
                  Anodonta opaca
Lea
                                          (Vaughn 1893)                 
                  Anodonta stewartiana
Lea
                                         (Pilsbry 1891; Simpson 1900; Vaughn 1893; Williamson 1896)
                  Anodonta texasensis
Lea
                                         (Simpson 1900; Simpson 1914; Strecker 1931)
                  Anodonta undulata
                                 (Wright 1898)
                  Anodonta virens-stewartiana
group
                                         (Frierson 1899)
                  Margaron bealei
                  Margaron micans

                  Margaron texasensis

 

Distribution Citations

1891 Pilsbry
1891 Vaughn
1893 Vaughn
1896 Williamson
1898 Wright
1899 Frierson

1900 Simpson

1913 Shira
1914 Simpson

1927 Frierson

1931 Strecker
1938 Parks Corey et al.

1940 Bachtel

1953 Sublette
1954 Read
1955 Sublette
1956 Riggs & Webb

[1968 Murray & Roy]

1970 Little & Gentner
1972 Flook & Ubelaker
1972 Mauldin
1972 Metcalf & Smart
[1973 Burch]
1974 Britton et al.
1974 Metcalf
1974 RET Inc.
1976 Calnan
1977 Bass
1977 White & White
1977b White & White
1978 Murray


1981 Bass & Harrell
1982 Golightly
1982e Neck
1984 Gordon
1984 Neck & Metcalf
1985b Neck
1986 Neck FBLT
1988 Neck & Metcalf
1989 Mather
1989 Neck FBAL
1989b Vidrine

1990 Neck GSA
1990b Neck
1992 Schafer et al.
1993 Vidrine
1994 Howells DSFB105
1995 Howells DSFB119
1996 Howells DSFB120
1996b Howells DSFB125
1997 Howells DSFB144
1996 Howells et al.
1997 Howells
1997b Howells
1997 Howells FMWRS
1998 Feaster
1998a Howells FMO
1998 Howells NDS147
1998 Nelson Sietman
         Howells
1999 Howells DSFB161

2000 Howells
2000 Howells Mather
         Bergmann
2006 Ford & Nicholson
[2008 NatureServe]

 

 

 

 

 

 

[ ] indicate state record, no specific county or locality indicated

notes:

-mud-loving species; sometimes on sand or gravel (Read 1954)

-generally foun in ponds, reservoirs or slow moving streams (Neck 1986 FBLT)

-typical lake species (Bachtel 1940)

-long time breeder (Read 1954)

-reported as late pleistocene fossil in Reeves County (Metcalf 1972,1974)

copyright:   Stephen W. Ziser    
                          2010


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