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Petrocha notogaea gen. et sp.n., a neotenic interstitial polychaete (Dorvilleidae) from the Hauraki Gulf, New Zealand
Author(s) -
NORDHEIM HENNING
Publication year - 1987
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 - 10.1111/j.1463-6409.1987.tb00049.x
Subject(s) - neoteny , polychaete , biology , genus , zoology , anatomy , phylogenetic tree , taxon , paleontology , ecology , gene , biochemistry
Petrocha notogaea represents a new interstitial dorvilleid genus from subtidal medium coarse sands. With its distinctly neotenic characters, such as one pair of short palps, ciliary rings on all parts of the body, setigers with uniramous parapodia, simple capillaries, simple heterogomph falcigers and comparatively small size (1.2–1.4 mm), it shows close phylogenetic affinity to several other taxa of the Dorvilleidae, such as Ikosipodus, Microdorvillea, Arenotrocha and Pusillotrocha , which have only been described in the last four years.