Premium
Systematics and phylogeny of the cheilostome bryozoan Doryporella
Author(s) -
Grischenko Andrei V.,
Shunsuke F. Mawatari,
Paul D. Taylor
Publication year - 2000
Publication title -
zoologica scripta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.204
H-Index - 64
eISSN - 1463-6409
pISSN - 0300-3256
DOI - 10.1046/j.1463-6409.2000.00038.x
Subject(s) - reticulate , biology , systematics , clade , taxonomy (biology) , type species , zoology , biogeography , subgenus , arctic , paleontology , phylogenetics , ecology , biochemistry , gene
The four nominal species of the Arctic‐Boreal anascan bryozoan Doryporella Norman are revised. Colonies of Doryporella are small, typically encrust shells and pebbles, and have autozooids with frontal walls bearing a distinctive reticulate pattern of polygonal ridges. High resolution SEM shows the frontal wall to be an interior wall (cryptocyst), contrary to previous studies which have regarded it as an exterior wall (gymnocyst). The inter‐relationships between the species assigned to Doryporella are assessed cladistically using skeletal characters. The type species ( D. spathulifera ) and two other species ( D. alcicornis and D. armata ) form a well‐supported clade, but the fourth species ( D. reticulata ) is more closely‐related to certain other calloporid genera. Therefore, the reticulate frontal wall is inferred to have evolved twice and D. reticulata is removed to Doryporellina gen. n. Biogeographical distributions of the four species are reviewed.