Utterbackia imbecillis, Specimen #1286

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; tan external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: June 15, 1979
Creator: Britton, Joseph; Brush, Sam & La Grove, M.
System: The UNT Digital Library

Leptodea fragilis, Specimen #522

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thin shell; double looped beak sculpturing; white internal coloring; tan 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: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Truncilla truncata, Specimen #1213

One preserved mussel specimen including both the left and right valves. The specimen exhibits a triangular shape; thick shell; 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.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #1094

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; 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 long dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Tritogonia verrucosa, Specimen #890

One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thick shell; white internal coloring; dark brown external coloring; external sculpturing in the form of ridges. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #1095

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #1096

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #1097

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; white internal coloring; tan 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.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #1098

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; white internal coloring; tan 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.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #1099

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; 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 very-recently dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #1101

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; 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 very-recently dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Potamilus purpuratus, Specimen #592

One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical 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 relatively-recently dead when collected.
Date: October 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Potamilus purpuratus, Specimen #680

One preserved mussel specimen including the right valve only. The specimen exhibits a rhomboidal shape; thick shell; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures over 120 mm in length and was assessed to be relatively-recently dead when collected.
Date: August 15, 1979
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #681

One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thick shell; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures over 120 mm in length and was assessed to be relatively-recently dead when collected.
Date: August 15, 1979
Creator: Britton, Joseph
System: The UNT Digital Library

Potamilus purpuratus, Specimen #682

One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thick shell; pink 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.
Date: August 15, 1979
Creator: Britton, Joseph
System: The UNT Digital Library

Lampsilis teres, Specimen #264

One preserved mussel specimen including the left valve only. The specimen exhibits a rhomboidal shape; moderately thick shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Lampsilis teres, Specimen #456

One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; yellow 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.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Lampsilis teres, Specimen #457

One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; 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 relatively-recently dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Lampsilis teres, Specimen #458

One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; tan 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: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #905

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be very-recently dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #908

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; 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.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Quadrula mortoni, Specimen #918

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be very-recently dead when collected.
Date: October 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Amblema plicata, Specimen #136

One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; external sculpturing in the form of ridges. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library

Lampsilis teres, Specimen #265

One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; off-white 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: September 15, 1971
Creator: Britton, Joseph & Mauldin, V.
System: The UNT Digital Library