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1 of 1977 William Blanding monument
William Blanding monument

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Related Records

  1. Amblema plicata

    Four freshwater mussel valves comprising two complete specimens. The exteriors are dark brown in color with thick periostracum that is flaking due to wear. The interiors are a slightly iridescent, silver to white color with a small amount of silver interior nacre. The periostracum on the umbos of the shells is flaking off due to wear. The shells are elongated and are covered with growth lines, striations, and pronounced costae. The auriform shape...

    Record Type: Object

    Amblema plicata, 21-445. External views w/scale bar.
  2. Lampsilis siliquoidea

    Two large freshwater mussel valves, one complete specimen. The exteriors are a dark tan and black with light black color bands radiating from the umbos. The interiors are a pearlescent white with a pink and green sheen. A small portion of the ventral margins are a dark pink, which appears to be staining.

    Record Type: Object

    Lampsilis siliquoidea, 21-364A. External views with scale bar.
  3. Lampsilis teres

    Ten valves comprising five complete freshwater mussels. Externally, the valves are tan to dark brown in color with a thick periostracum. The interiors are iridescent with a white and silver nacre. The triangular valves have deep muscle scars with large hinge teeth. The valves have pointed posterior edges and rounded anterior edges.

    Record Type: Object

    Lampsilis teres, 21-306. External views w/scale bar.
  4. Lasmigona costata

    Six freshwater mussel valves, three complete specimens. The exteriors are brown to tan in color with dark color bands and a thick periostracum that is flaking due to wear. The interiors are a slightly iridescent, silver to white color and a small amount of silver interior nacre. The interiors of the shells 21-446.1 and 21-446.2 have several sharp bumps. The elongated shells are covered with growth lines, striations, and costae. The ellipse shaped...

    Record Type: Object

    Lasmigona costata, 21-446. External view w/scale bar.
  5. Leptodea ochracea

    Two freshwater mussel valves (one complete specimen). The exteriors are dark brown to brown with dark green color bands, deep growth lines and striations. The thin periostracum is flaking at the umbos due to wear. The interiors are an iridescent, silver to white color. The shells have deep muscle scars and small hinge teeth. The elliptical shells have rounded posterior and anterior edges.

    Record Type: Object

    Leptodea ochracea, 21-437. External views w/scale bar.
  6. Ligumia recta

    Five valves in total, four of which form two complete freshwater mussel specimens. The valves are thin and elongated making a very narrow ellipse shape. The exterior of the valves are dark brown to black in color with a green hue. Along with horizontal growth lines, the exterior of the valves also have vertical straitions that radiate from the white hinges of the valves to their edges. The interior of the valves are white in color with a pearlesc...

    Record Type: Object

    Ligumia recta, 21-397. External views w/scale bar.
  7. Obovaria retusa

    Four valves comprising two complete freshwater mussels. The exteriors vary in shades of brown and are covered with a thick periostracum. The interiors are iridescent with a white to purple nacre. The circular shells have deep growth lines, deep muscle scars, large hinge teeth, and are covered with striations. The shells have round posterior edges and round anterior edges.

    Record Type: Object

    Obovaria retusa, 21-301B. External view of specimens.
  8. Pleurobema rubrum

    Thirteen valves, six complete freshwater mussel specimens and one isolated valve. The exteriors are dark brown at the umbo, fading to a lighter brown near the edges and are covered in growth lines and striations. The periostracum is flaking at the umbos. The interiors are white and slightly iridescent, with deep muscle scars and large hinge teeth. The triangular shaped valves have rounded anterior edges and rounded posterior edges.

    Record Type: Object

    Pleurobema rubrum, 21-396. External views w/scale bar.
  9. Potamilus alatus

    Six freshwater mussel valves, three complete specimens. The exteriors are dark brown to black in color and covered in growth lines. The periostracum on the shells is flaking especially near the umbos. Shallow muscle scars are visible on the interiors which are iridescent and light pink in color. The triangle shaped shells have rounded anterior edges and rounded posterior edges. The shells have large winged shaped shelves near their umbos.

    Record Type: Object

    Potamilus alatus, 21-404. External views w/scale bar.
  10. Potamilus purpuratus - March 1844

    Four freshwater mussel valves (two complete specimen). The exteriors are dark brown, brown, and tan in color. The interiors are an iridescent silver, white, and pink color with sharp bumps. Shell 21-441.1 has a large shelf-like bulge on the interior. The shells have silver interior nacre and a thick periostracum that has flaked off of the majority of their exteriors. The elongated shells are elliptical in shape with growth lines and striations. T...

    Record Type: Object

    Potamilus purpuratus, 21-441. External views w/scale bar.
  11. Quadrula quadrula

    Three freshwater mussels, (one complete specimen and one valve). The exteriors are dark brown with striae and nodules. The interiors are a pearlescent white with visible wide ventral margins and muscle scars.

    Record Type: Object

    Quadrula quadrula, 21-432. Internal and external views w/scale bar.

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