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 Country: United States
 Collection: Joseph Britton Freshwater Mussel Collection
Utterbackia imbecillis, Specimen #1348
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. Collected in the Brazos 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/metadc35358/
Utterbackia imbecillis, Specimen #1349
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. Collected in the Brazos 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/metadc35359/
Utterbackia imbecillis, Specimen #1350
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. Collected in the Brazos 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/metadc35360/
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/
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/
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/
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/
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 #1356
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. 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/metadc35422/
Utterbackia imbecillis, Specimen #1357
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. 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/metadc35419/
Utterbackia imbecillis, Specimen #1358
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/metadc35420/
Utterbackia imbecillis, Specimen #1359
One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; dark 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/metadc35421/
Utterbackia imbecillis, Specimen #1360
One preserved mussel specimen including the left valve only. 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/metadc35428/
Utterbackia imbecillis, Specimen #1361
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/metadc35429/
Utterbackia imbecillis, Specimen #1362
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; off-white 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/metadc35430/
Utterbackia imbecillis, Specimen #1363
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. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected. digital.library.unt.edu/ark:/67531/metadc35431/
Utterbackia imbecillis, Specimen #1364
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/metadc35432/
Utterbackia imbecillis, Specimen #1365
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; off-white 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/metadc35433/
Utterbackia imbecillis, Specimen #1366
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; olive 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/metadc35434/
Utterbackia imbecillis, Specimen #1367
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; olive 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/metadc35435/
Utterbackia imbecillis, Specimen #1368
One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; olive 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/metadc35436/
Utterbackia imbecillis, Specimen #1369
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; olive external coloring; no external sculpturing. 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/metadc35437/
Utterbackia imbecillis, Specimen #1370
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; olive external coloring; no external sculpturing. 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/metadc35438/
Utterbackia imbecillis, Specimen #1371
One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; olive external coloring; no external sculpturing. 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/metadc35439/
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/
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/
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/
Utterbackia imbecillis, Specimen #1375
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 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/metadc35450/
Utterbackia imbecillis, Specimen #1376
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/metadc35451/
Utterbackia imbecillis, Specimen #1377
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; 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/metadc35452/
Utterbackia imbecillis, Specimen #1378
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; dark brown external coloring; no external sculpturing. Collected in the Trinity 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/metadc35469/
Utterbackia imbecillis, Specimen #1379
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 0 - 60 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35470/
Utterbackia imbecillis, Specimen #1380
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 relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35489/
Utterbackia imbecillis, Specimen #1381
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 60 - 100 mm in length and was assessed to be relatively-recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35490/
Utterbackia imbecillis, Specimen #1382
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 Brazos 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/metadc35491/
Utterbackia imbecillis, Specimen #1383
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 Brazos 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/metadc35492/
Utterbackia imbecillis, Specimen #1384
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 Brazos 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/metadc35493/
Utterbackia imbecillis, Specimen #1385
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 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/metadc35505/
Utterbackia imbecillis, Specimen #1386
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 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/metadc35506/
Utterbackia imbecillis, Specimen #1387
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 Brazos 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/metadc35507/
Utterbackia imbecillis, Specimen #1388
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; green external coloring; no external sculpturing. Collected in the Brazos 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/metadc35500/
Utterbackia imbecillis, Specimen #1389
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. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected. digital.library.unt.edu/ark:/67531/metadc35515/
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