Sphaerium solidum

{{Speciesbox

| image =

| genus = Sphaerium

| species = solidum

| authority = (Normand, 1844)

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Sphaerium solidum, the solid orb mussel, is a species of freshwater bivalve from family Sphaeriidae.

Distribution and conservation status

Listed in IUCN Red List – Assessed in 2012 as NT (near threatened){{Cite web |date=2012-03-05 |title=Sphaerium solidum: Van Damme, D., Killeen, I. & von Proschwitz, T. |url=http://dx.doi.org/10.2305/iucn.uk.2012-1.rlts.t155986a738887.en |access-date=2024-05-22 |website=IUCN Red List of Threatened Species}}
Germany – critically endangered (vom Aussterben bedroht) Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, {{ISBN|3-923376-02-2}}
Poland – endangered (EN)[http://www.iop.krakow.pl/pckz/opis.asp?id=126&je=en Sphaerium solidum - Polish Red Data Book of Animals]
Slovakia

{{cite journal | last=Stunžėnas | first=Virmantas | last2=Petkevičiūtė | first2=Romualda | last3=Stanevičiūtė | first3=Gražina | title=Phylogeny of Sphaerium solidum (Bivalvia) based on karyotype and sequences of 16S and ITS1 rDNA | journal=Open Life Sciences | publisher=Walter de Gruyter GmbH | volume=6 | issue=1 | date=2010-12-21 | issn=2391-5412 | doi=10.2478/s11535-010-0101-6 | pages=105–117| doi-access=free }}