Pleurobema riddellii, Specimen #560

One preserved mussel specimen including the right valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #561

One preserved mussel specimen including the left valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #562

One preserved mussel specimen including the right valve only. The specimen exhibits a triangular shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #563

One preserved mussel specimen including the right valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #564

One preserved mussel specimen including the right valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #565

One preserved mussel specimen including the left valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #554

One preserved mussel specimen including the left valve only. The specimen exhibits a triangular shape; moderately thick shell; bluish-white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #555

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #556

One preserved mussel specimen including the left valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #557

One preserved mussel specimen including the right valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #558

One preserved mussel specimen including the right valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Pleurobema riddellii, Specimen #559

One preserved mussel specimen including the left valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be subfossil when collected.
Date: 1972
Creator: Pettit, J.
System: The UNT Digital Library

Potamilus purpuratus, Specimen #656

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; thick shell; purple internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures over 120 mm in length and was assessed to be recently dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #657

One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thick shell; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #658

One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thick shell; bluish-white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #659

One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thick shell; purple internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #660

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thick shell; purple internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures over 120 mm in length and was assessed to be recently dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #670

One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thick shell; yellow internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.
Date: October 8, 1972
Creator: Pettit, J.
System: The UNT Digital Library

Potamilus amphichaenus, Specimen #615

One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thin shell; 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.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #616

One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; thick shell; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures over 120 mm in length and was assessed to be relatively-recently dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #617

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; thick shell; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #618

One preserved mussel specimen including the left valve only. The specimen exhibits a rhomboidal shape; thick shell; pink 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.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #619

One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; thick shell; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #620

One preserved mussel specimen including the right valve only. The specimen exhibits a rhomboidal shape; thick shell; purple internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected.
Date: August 12, 1972
Creator: Britton, Joseph
System: The UNT Digital Library