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  Partner: Elm Fork Natural Heritage Museum
 Collection: Joseph Britton Freshwater Mussel Collection
Megalonaias nervosa, Specimen #1655
One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; moderately thick shell; double looped beak sculpturing; white internal coloring; tan external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc38935/
Megalonaias nervosa, Specimen #1675
One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; double looped beak sculpturing; white internal coloring; black external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc38954/
Utterbackia imbecillis, Specimen #1373
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35441/
Toxolasma texasense, Specimen #1199
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected. digital.library.unt.edu/ark:/67531/metadc35447/
Utterbackia imbecillis, Specimen #1372
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35440/
Toxolasma texasense, Specimen #1200
One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35448/
Leptodea fragilis, Specimen #518
One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35444/
Utterbackia imbecillis, Specimen #1374
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35449/
Toxolasma texasense, Specimen #1198
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35446/
Leptodea fragilis, Specimen #517
One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; thin shell; double looped beak sculpturing; white internal coloring; off-white external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be very-long dead when collected. digital.library.unt.edu/ark:/67531/metadc35443/
Pyganodon grandis, Specimen #861
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. The specimen measures over 120 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35005/
Pyganodon grandis, Specimen #855
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures over 120 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35002/
Pyganodon grandis, Specimen #854
One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35001/
Pyganodon grandis, Specimen #865
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35007/
Pyganodon grandis, Specimen #851
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35000/
Pyganodon grandis, Specimen #867
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35008/
Pyganodon grandis, Specimen #859
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35004/
Pyganodon grandis, Specimen #869
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35009/
Pyganodon grandis, Specimen #863
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35006/
Pyganodon grandis, Specimen #857
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35003/
Utterbackia imbecillis, Specimen #1352
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35385/
Toxolasma texasense, Specimen #1192
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35382/
Toxolasma texasense, Specimen #1191
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35381/
Utterbackia imbecillis, Specimen #1354
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35387/
Toxolasma texasense, Specimen #1190
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35380/
Utterbackia imbecillis, Specimen #1355
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35388/
Utterbackia imbecillis, Specimen #1351
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35384/
Cyrtonaias tampicoensis, Specimen #194
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35389/
Utterbackia imbecillis, Specimen #1353
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35386/
Toxolasma texasense, Specimen #1193
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35383/
Cyrtonaias tampicoensis, Specimen #193
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35375/
Cyrtonaias tampicoensis, Specimen #190
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35372/
Cyrtonaias tampicoensis, Specimen #189
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35371/
Toxolasma texasense, Specimen #1187
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35377/
Cyrtonaias tampicoensis, Specimen #188
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35370/
Toxolasma texasense, Specimen #1188
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35378/
Cyrtonaias tampicoensis, Specimen #192
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35374/
Toxolasma texasense, Specimen #1189
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35379/
Cyrtonaias tampicoensis, Specimen #187
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35376/
Cyrtonaias tampicoensis, Specimen #191
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35373/
Ligumia subrostrata, Specimen #539
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35095/
Utterbackia imbecillis, Specimen #1296
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Neches basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35092/
Utterbackia imbecillis, Specimen #1295
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Neches basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35091/
Utterbackia imbecillis, Specimen #1298
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35097/
Utterbackia imbecillis, Specimen #1294
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Neches basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35090/
Utterbackia imbecillis, Specimen #1299
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35098/
Ligumia subrostrata, Specimen #538
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35094/
Utterbackia imbecillis, Specimen #1300
One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35099/
Toxolasma texasense, Specimen #1130
One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35096/
Utterbackia imbecillis, Specimen #1297
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Neches basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35093/
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