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 Collection: Joseph Britton Freshwater Mussel Collection
Pyganodon grandis, Specimen #854

Pyganodon grandis, Specimen #854

Date: September 8, 1971
Creator: Britton, Joseph
Description: 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.
Contributing Partner: Elm Fork Natural Heritage Museum
Pyganodon grandis, Specimen #852

Pyganodon grandis, Specimen #852

Date: September 8, 1971
Creator: Britton, Joseph
Description: 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; 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.
Contributing Partner: Elm Fork Natural Heritage Museum
Pyganodon grandis, Specimen #864

Pyganodon grandis, Specimen #864

Date: July 20, 1974
Creator: Britton, Joseph
Description: 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 Brazos basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Contributing Partner: Elm Fork Natural Heritage Museum
Pyganodon grandis, Specimen #882

Pyganodon grandis, Specimen #882

Date: July 20, 1974
Creator: Britton, Joseph
Description: 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; olive 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.
Contributing Partner: Elm Fork Natural Heritage Museum
Pleurobema riddellii, Specimen #555

Pleurobema riddellii, Specimen #555

Date: 1972
Creator: Pettit, J.
Description: 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.
Contributing Partner: Elm Fork Natural Heritage Museum
Pleurobema riddellii, Specimen #556

Pleurobema riddellii, Specimen #556

Date: 1972
Creator: Pettit, J.
Description: 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.
Contributing Partner: Elm Fork Natural Heritage Museum
Fusconaia sp., Specimen #256

Fusconaia sp., Specimen #256

Date: May 28, 1973
Creator: Pettit, J.
Description: One preserved mussel specimen including the left valve only. The specimen exhibits a round shape; moderately thick shell; single looped beak sculpturing; 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.
Contributing Partner: Elm Fork Natural Heritage Museum
Pleurobema riddellii, Specimen #553

Pleurobema riddellii, Specimen #553

Date: November 1, 1972
Creator: Pettit, J.
Description: 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.
Contributing Partner: Elm Fork Natural Heritage Museum
Fusconaia sp., Specimen #252

Fusconaia sp., Specimen #252

Date: May 28, 1973
Creator: Pettit, J.
Description: One preserved mussel specimen including the right valve only. The specimen exhibits a round shape; moderately thick shell; single looped beak sculpturing; 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.
Contributing Partner: Elm Fork Natural Heritage Museum
Pleurobema riddellii, Specimen #559

Pleurobema riddellii, Specimen #559

Date: 1972
Creator: Pettit, J.
Description: 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.
Contributing Partner: Elm Fork Natural Heritage Museum
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