TAXONOMY AND EVOLUTION OF THE SARCODINA: A RECLASSIFICATION

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Abstract
Summary: Sarcodinid taxonomy was previously revised by Jahn and Bovee (1965) on the basis of the two readily distinguishable methods of ameboid locomotion, respectively the contractile‐hydraulic and the active sliding systems. Pseudopodial form and structure were regarded as characters of ordinal rank. The present general summary of the classification and the status of further investigations, continues the reclassification to the family level, citing authors and dates, as well as presenting brief definitions of subclasses, orders (and superorders and suborders where applicable), families and subfamilies. New taxa proposed include the families Striamoebidae and Discamoebidae, both of Bovee and Jahn, and their type genera,StriamoebaandDiscamoebaof Bovee, andPentagoninaBovee and Jahn (nom. nov. proPentagoniaGauthier‐Lièvre and Thomas, 1958nonCozzens, 1846). The tentative phylogenetic scheme proposed by Bovee and Jahn in agreement with the symbiotic theory of eukaryotic origins is briefly outlined.