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Sensory structures of Archaeostraca (Phyllocaridida, Crustacea)
Author(s) -
Crasquin Sylvie,
Racheboeuf Patrick R.,
Bergström Jan
Publication year - 2009
Publication title -
evolution and development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.651
H-Index - 78
eISSN - 1525-142X
pISSN - 1520-541X
DOI - 10.1111/j.1525-142x.2009.00322.x
Subject(s) - carapace , biology , extant taxon , anatomy , dorsum , sensory system , chemoreceptor , crustacean , zoology , neuroscience , evolutionary biology , receptor , biochemistry
SUMMARY The carapace of some Archaeostraca exhibits two kinds of structures that are best interpreted as corresponding to sensory organs. Dorsal ones are located either along the dorsal margin of the valves of the carapace, or on the median dorsal plate. Anterolateral ones are located in the anterior region of both valves. Both structures are respectively homologous of the anterior and posterior sensory organs known from extant Leptostraca and other Crustacea. These structures are described in adult Archaeostraca from the Ordovician to the Carboniferous. It is expected that they could have baroreceptor, mechanoreceptor, and/or chemoreceptor functions in some cases, and a function in osmotic regulation in others.