Cylindrical Papershell

Anodontoides ferussacianus

Diagnostics 7

SHELL

  • size: small to mid-sized. Maximum 95 mm but most specimens under 70 mm.
  • thickness: thin throughout
  • shape: oval-elongate. some older individuals have pinched appearance mid-shell on ventral edge.
  • width: moderately inflated to very inflated in older adults. rarely cylindrical in cross-section, contrary to what the name suggests
  • surface: smooth, not shiny.
  • beak sculptures:
  • color/markings: pale brown/beige, with fine green rays in posterior.
  • sexual dimorphism: none
  • pseudocardinal teeth: none
  • lateral teeth: none
  • nacre: irridescent white to bluish white

Soft parts: foot light peach. mantle pale. siphons moderately gaping. inhalant siphon papillae short

Similar species/lookalikes: similar to young Pyganodons and creepers (see creeper diagnostics for differing shell and sculpture characters)

Sources and Credits

  1. (c) redgarter, some rights reserved (CC BY-NC-ND), uploaded by Philippe Blais, https://www.inaturalist.org/photos/5940783
  2. (c) redgarter, some rights reserved (CC BY-NC-ND), uploaded by Philippe Blais, https://www.inaturalist.org/photos/12735710
  3. (c) redgarter, some rights reserved (CC BY-NC-ND), uploaded by Philippe Blais, https://www.inaturalist.org/photos/12735708
  4. (c) redgarter, some rights reserved (CC BY-NC-ND), uploaded by Philippe Blais, https://www.inaturalist.org/photos/12735706
  5. (c) redgarter, some rights reserved (CC BY-NC-ND), uploaded by Philippe Blais, https://www.inaturalist.org/photos/12735707
  6. (c) Matthew Ireland, some rights reserved (CC BY-NC), http://inaturalist.ca/photos/8095798
  7. (c) Philippe Blais, some rights reserved (CC BY-SA)

More Info

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