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Potamilus amphichaenus, Specimen #683

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; bluish-white internal coloring; olive 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 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #837

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.
Date: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #838

Description: 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 Trinity basin. The specimen measures over 120 mm in length and was assessed to be long dead when collected.
Date: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1003

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1004

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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 0 - 60 mm in length and was assessed to be very-recently dead when collected.
Date: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1005

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; dark brown external coloring; external sculpturing in the form of pustules. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be very-recently dead when collected.
Date: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1006

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1007

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1008

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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 100 - 120 mm in length and was assessed to be very-recently dead when collected.
Date: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #997

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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 0 - 60 mm in length and was assessed to be very-recently dead when collected.
Date: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #998

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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 0 - 60 mm in length and was assessed to be very-recently dead when collected.
Date: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #999

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1000

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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 relatively-recently dead when collected.
Date: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1001

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1002

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate 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: August 1, 1973
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #781

Description: 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 Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: November 1, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #782

Description: 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 Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: November 1, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #783

Description: 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 Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: November 1, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #784

Description: 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 100 - 120 mm in length and was assessed to be recently dead when collected.
Date: November 1, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #785

Description: 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 Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: November 1, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #791

Description: One preserved mussel specimen including the left valve only. 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.
Date: August 12, 1972
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

[News Clip: Air silencers]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6 P.M.
Date: June 19, 1981
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections