One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; external sculpturing in the form of ridges. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; external sculpturing in the form of ridges. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; black external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be very-long dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 100 - 120 mm in length and was assessed to be very-long dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be subfossil when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be very-long dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; thick shell; white internal coloring; reddish-brown external coloring; external sculpturing in the form of ridges. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 60 - 100 mm in length and was assessed to be very-recently dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 60 - 100 mm in length and was assessed to be recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.

Specimen of a Vitis arizonica Engelm plant, collected by T. V. Munson and Hopkins in Flagstaff, Arizona, 1889. Text at bottom of page: "Cliff-dweller's gulah near Flagstaff, Arizona."

Specimen of a Vitis arizonica Engelm plant, collected by T. V. Munson and Hopkins in Arizona, 1889. Text at bottom of page: "Cliff-dweller's gulah near Flagstaff, Arizona."