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Phylogeny and vicariance biogeography of North Atlantic Chalinidae (Haplosclerida, Demospongiae)
de Weerdt, W.H. (1989). Phylogeny and vicariance biogeography of North Atlantic Chalinidae (Haplosclerida, Demospongiae). Beaufortia 39(3): 55-90
In: Beaufortia. Zoological Museum: Amsterdam. ISSN 0067-4745, more
Peer reviewed article  

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Keywords
    Biogeography; Identification keys; Shallow water; Sponges; Taxonomy; Chalinidae Gray, 1867 [WoRMS]; Porifera [WoRMS]; A, North Atlantic [Marine Regions]; Marine

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  • de Weerdt, W.H.

Abstract
    The present paper consists of a phylogenetic and historical biogeographic analysis of the North Atlantic shallow-water Haplosclerida (Porifera, Demospongiae), and of the Chalinidae in particular. A key to the haplosclerid families, the Chalinidae, Niphatidae, Callyspongiidae, Petrosiidae and Oceanapiidae, and a hypothesis on the phylogenetic relationships of the families is presented. Within the Chalinidae, eight monophyletic species groups are distinguished on the basis of assumed apomorphous characters. Two of these groups belong to the nominal genera Acervochalina and Dendroxea , the other six to the genus Haliclona . A key to the species groups and a hypothesis on the phylogenetic relationships of the groups is presented. Subsequently, each individual species group is analyzed phylogenetically. The obtained species cladograms and the distributional types of the species within the North Atlantic Ocean are used for the construction of a general area cladogram, representing a hypothesis on the historical relationships of areas of endemism in the North Atlantic Ocean. The analysis is based on the component-compatibility and parsimony methods as developed by Zandee & Roos (1987).

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