A new name for <i>Achistrum brevis</i> Mostler, 1971 (Holothuroidea) [non <i>Achistrum brevis</i> Gutschick, 1959 (Holothuroidea)]
نویسندگان
چکیده
منابع مشابه
Tasmanian Sea ~ Cucumbers ( Holothuroidea )
Over five hundred and forty of seacucumbers eollected on the southern coasts of Tasmania have in the course of the present study. Seven families, 12 and 14 species are represented in the One is regarded are as new, adhaerens, TaVUtll. and Paraca.udina. Three other species have not been recorded previously from Tasmania but are known from the coast of Victoria. They are Cllcurnella Jnutans incon...
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Holothuroids, or sea cucumbers, are an abundant and diverse group of echinoderms with over 1400 species occurring from the intertidal to the deepest oceanic trenches. In this study, we report the first phylogeny of this class, based on a cladistic analysis of 47 morphological characters. We introduce several previously unconsidered synapomorphic characters, examine the relationships between rep...
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Recently collected material from Australia, Japan and Guam allowed us to revise Phyrella and describe Phyrella mookiei sp. nov. We redefine the genus based on combined morphological and molecular analyses. Phyrella unlike most dendrochirotids eviscerate posteriorly. The number of tentacles is variable (14-20), as is the degree of fragmentation of the calcareous ring, calling into question the s...
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Sea cucumbers are characterized by their content in holothurins, triterpenoid glycosides that are responsible for the toxicity of these echinoderms. Nearly 100 holothurins isolated in the last twenty years are grouped into three main aglycone structural types: 3p-hydrox>iiolost-9(ll)-ene, 3p-hydrox5*iolost-7-ene and nonholostane based aglycones. This communication offers a general view of the s...
متن کاملA new species of brooding Psolidae (Echinodermata: Holothuroidea) from deep-sea off Argentina, Southwestern Atlantic Ocean
This paper describes a new species of Psolus (Holothuroidea, Echinodermata), P. lawrencei sp. nov., (19 specimens) found in the deep sea (308–1398 m) in the Southwestern Atlantic Ocean (SWAO) (around 38°S–54°W) with brooders (up to 3.15 mm) in the tentacles of females and a penis-like genital papilla on males. The presence of dorsal scales, the concave shape of the ossicles with a bridge, the d...
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ژورنال
عنوان ژورنال: Journal of Micropalaeontology
سال: 2001
ISSN: 2041-4978
DOI: 10.1144/jm.20.2.126