Results 41 to 50 of about 1,682 (210)
What makes an ophiuroid? A morphological study of the problematic Ordovician stelleroid Stenaster and the palaeobiology of the earliest asteroids and ophiuroids [PDF]
Zoological Journal of the Linnean Society, 1999 Abstract Extant asteroids and ophiuroids [Echinodermata] are distinguished by differences in arm support, water vascular system structures and in details of arm and jaw structure. However, some lower Palaeozoic taxa show combinations of both asteroid-like and ophiuroid-like characters and their morphology and functional biology is poorly understood ...
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Eremochloa ophiuroides (centipedegrass). [PDF]
, 2020 Abstract E. ophiuroides is a perennial grass that has been intentionally introduced into tropical and warm temperate areas to be used as a lawn grass (USDA-ARS, 2016). In the United States it has become a common lawn grass principally in the southeastern states (Brosnan and Deputy, 2008; Duble, 2016).
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Mitochondrial DNA. Part B. Resources, 2020 The length of the complete mitochondrial genome was 16,626 bp for Ophiura kinbergi, containing 35 genes similar to other known ophiuroids. The GC content was 33.35%.
Yi-Xuan Li +4 more
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Cloning by Ophiuroid Echinoderm Larvae
The Biological Bulletin, 1998 Larvae of the brittle star Ophiopholis aculeata, common to the North Pacific coast of the United States, and an unidentified species of ophiuroid, collected from waters off the eastern coast of Florida, undergo asexual reproduction of the primary larva to produce a secondary larval clone.
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, 2006 Four genera and species of protasterid ophiuroids have been reported from the Lower Devonian Hunsrück Slate: Bundenbachia beneckei, Palaeophiomyxa grandis, Mastigophiura grandis, and Palaeophiura simplex.
Glass, Alexander
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DiversitySeverely understudied and poorly known ultra-abyssal (hadal) brittle-stars of the genus Abyssura were collected during a recent expedition to the Japan Trench at depths between 6183 and 6539 m and were examined for the first time for both their molecular
Alexander Martynov, Tatiana Korshunova
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Water vascular system architecture in an Ordovician ophiuroid [PDF]
Biology Letters, 2017 Understanding the water vascular system (WVS) in early fossil echinoderms is critical to elucidating the evolution of this system in extant forms. Here we present the first report of the internal morphology of the water vascular system of a stem ophiuroid.
Elizabeth G. Clark +3 more
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Novel marine steroid sulfates from Pacific ophiuroids
, 1987 New sulfated polyhydroxy steroids were isolated from 3 species of Pacific ophiuroids. The major compd. in all 3 species was identified as I. Two minor compds. possessed the same nuclei and differed in the side chain, and 1 compd.
RICCIO, Raffaele +7 more
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A new Silurian ophiuroid from the west of Ireland [PDF]
Irish Journal of Earth Sciences, 2017 Silurian echinoderms from Ireland are poorly known; hitherto, only three nominal species have been described, all crinoids and all from the Telychian (Upper Llandovery, Lower Silurian) Kilbride Formation in County Galway. A new species from this formation, Crepidosoma doylei, is the first recorded Irish Silurian ophiuroid (brittle star).
Blake, Daniel B. +2 more
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Asteroids, ophiuroids and holothurians from the southeastern Weddell Sea (Southern Ocean)
ZooKeys, 2014 Until the early 1980s, the composition and distribution of the asteroid (starfish), ophiuroid (brittle star) and holothurian (sea cucumber) bottom fauna of the southeastern Weddell Sea was virtually unknown.
Julian Gutt +2 more
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