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Freeze-Etching of Azotobacter vinelandii: Examination of Wall, Exine, and Vesicles
Article on the freeze-etching of Azotobacter vinelandii and an examination of wall, exine, and vesicles.
Date:
March 1972
Creator:
Cagle, Gerald D.; Vela, G. Roland, 1927- & Pfister, Robert M.
Object Type:
Article
System:
The UNT Digital Library
Potamilus purpuratus, Specimen #603
One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thick shell; white 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:
March 17, 1972
Creator:
Pettit, J.
Object Type:
Specimen
System:
The UNT Digital Library
Potamilus purpuratus, Specimen #604
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 Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected.
Date:
March 17, 1972
Creator:
Pettit, J.
Object Type:
Specimen
System:
The UNT Digital Library
Potamilus purpuratus, Specimen #605
One preserved mussel specimen including the left valve only. The specimen exhibits an oval shape; thick shell; pink 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:
March 17, 1972
Creator:
Pettit, J.
Object Type:
Specimen
System:
The UNT Digital Library
Potamilus purpuratus, Specimen #606
One preserved mussel specimen including the right valve only. The specimen exhibits a rhomboidal shape; thick shell; white internal coloring; dark 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:
March 17, 1972
Creator:
Pettit, J.
Object Type:
Specimen
System:
The UNT Digital Library
Potamilus purpuratus, Specimen #607
One preserved mussel specimen including the right valve only. The specimen exhibits a rhomboidal shape; 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 relatively-recently dead when collected.
Date:
March 17, 1972
Creator:
Pettit, J.
Object Type:
Specimen
System:
The UNT Digital Library
Truncilla truncata, Specimen #1221
One preserved mussel specimen including the left valve only. 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 relatively-recently dead when collected.
Date:
March 17, 1972
Creator:
Pettit, J.
Object Type:
Specimen
System:
The UNT Digital Library
Toxolasma texasense, Specimen #1123
One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; 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 long dead when collected.
Date:
March 1, 1972
Creator:
Pettit, J.
Object Type:
Specimen
System:
The UNT Digital Library
Quadrula mortoni, Specimen #927
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 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date:
March 17, 1972
Creator:
Pettit, J.
Object Type:
Specimen
System:
The UNT Digital Library