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Quadrula quadrula, Specimen #911

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; double looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Red River basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.
Date: March 28, 1974
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula quadrula, Specimen #912

Description: One preserved mussel specimen including the right valve only. The specimen exhibits a quadrate shape; thick shell; double looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Red River basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.
Date: March 28, 1974
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula quadrula, Specimen #913

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; double looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Red River basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.
Date: March 28, 1974
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula quadrula, Specimen #914

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; double looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Red River basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected.
Date: March 28, 1974
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum
open access

Pretreatment Optimization of Fiberglass Manufacturing Industrial Wastewater

Description: Wastewater effluent produced in the fiberglass manufacturing industry contains a significant amount of total suspended solids. Environmental regulations require pretreatment of effluent before it is discharged to the municipal wastewater treatment plant. Chemical precipitation by coagulation and flocculation is the method of pretreatment used at the Vetrotex CertainTeed Corporation (VCT). A treatability study was conducted to determine conditions at which the VCT Wastewater Pretreatment Plant c… more
Date: December 1998
Creator: Dragoo, Ron
Partner: UNT Libraries
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