Pisidium lilljeborgii

Pisidium lilljeborgii is a species of freshwater bivalve from the family Sphaeriidae.

Pisidium lilljeborgii
Pisidium lilljeborgii in Danmarks Fauna
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Heterodonta
Order: Sphaeriida
Family: Sphaeriidae
Genus: Pisidium
Species:
P. lilljeborgii
Binomial name
Pisidium lilljeborgii
Clessin, 1886

Description

A moderately swollen (tumid), trapezoidal shell. The umbos are just behind the mid point and described as fairly narrow. The surface (periostracum) is slightly glossy and has coarse, irregular concentric striae. The colour is grey to brownish white. Pisidium lilljeborgii has a less equilateral shape than Pisidium hibernicum 3-4.5mm.

Distribution and conservation status
gollark: Yes, you could probably accelerate stuff *decently* if you knew the limitations of manufacturing and whatever and introduced things in a sensible order.
gollark: The tricky thing with that is that basically all stuff relies on previously developed tech, and complex supply chains for making that.
gollark: Approximately sensible ish, yes.
gollark: Movies and stuff go for a stupid inconsistent nonsensical one most of the time, though.
gollark: There are various perfectly sensible and consistent ways it *could* work.

References
  1. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 29 May 2007.
  2. Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2
  3. Kuiper, J. G. J.; Økland, K. A.; Knudsen, J.; Koli, L.; von Proschwitz, T.; Valovirta, I. (1989), "Geographical distribution of the small mussels (Sphaeriidae) in North Europe (Denmark, Faroes, Finland, Iceland, Norway and Sweden)" (PDF), Annales Zoologici Fennici, 26 (2): 73–101
  4. Roy Anderson ,2005 An annotated list of the non-marine molluscs of Britain and Ireland Journal of Conchology, 38 (6): 607–637, (published 2005) .


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