Results 261 to 270 of about 44,472 (301)
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1990
Abstract The annelids or ‘true’ worms form a major animal group, typically of elongated cylindrical shape and mostly ranging in length from 10mm to 150mm (although some are microscopic and a few exceed I m); the body is characteristically made up of a series of ring-like segments, indicated externally by annular constrictions.
A Nelson-Smith +2 more
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Abstract The annelids or ‘true’ worms form a major animal group, typically of elongated cylindrical shape and mostly ranging in length from 10mm to 150mm (although some are microscopic and a few exceed I m); the body is characteristically made up of a series of ring-like segments, indicated externally by annular constrictions.
A Nelson-Smith +2 more
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Expression of vasa, piwi, and nanos during gametogenesis in Typosyllis antoni (Annelida, Syllidae)
Evolution & Development, 2018Although model species have proven to be crucial for developmental biology, the evo‐devo approach requires a broader picture across phylogeny. Herein, we try to expand the range of studied annelids by presenting a transcriptome of Typosyllis antoni as a ...
Guillermo Ponz-Segrelles +2 more
semanticscholar +1 more source
2015
AbstractMyzostomida comprise a taxon of mainly soft-bodied, flattened, oval, and disc-like marine protostomes. They are usually associated with echinoderms. Most myzostomids exhibit five pairs of uniramous parapodia comprising aciculae and hooked setae, but a distinct head, pygidium, or signs of external segmentation are lacking.
Conrad Helm, Christoph Bleidorn
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AbstractMyzostomida comprise a taxon of mainly soft-bodied, flattened, oval, and disc-like marine protostomes. They are usually associated with echinoderms. Most myzostomids exhibit five pairs of uniramous parapodia comprising aciculae and hooked setae, but a distinct head, pygidium, or signs of external segmentation are lacking.
Conrad Helm, Christoph Bleidorn
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2013
The phylum of segmented worms (Annelida) contains truly metameric animals. Their body consists of similar ‘rings’ that are alike not only concerning their appearance but also their inner structure. The epithelium of annelids composes a functional unit together with the muscle fibres beneath.
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The phylum of segmented worms (Annelida) contains truly metameric animals. Their body consists of similar ‘rings’ that are alike not only concerning their appearance but also their inner structure. The epithelium of annelids composes a functional unit together with the muscle fibres beneath.
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2022
The rocks with the worm passages in Donbas were known previously in the deposits of the upper carbon, in limestones and marls of araucarite thickness. For the last years the typical ??worm) layers of regional distribution and quite definite stratigraphical position are found in the deposits of low carbon in the West Donbas. They are met in the deposits
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The rocks with the worm passages in Donbas were known previously in the deposits of the upper carbon, in limestones and marls of araucarite thickness. For the last years the typical ??worm) layers of regional distribution and quite definite stratigraphical position are found in the deposits of low carbon in the West Donbas. They are met in the deposits
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Abstract Annelida is a phylum of segmented worms, found mostly in the sea, but also in fresh water and in damp terrestrial environments. Annelids are bilaterally symmetrical with a coelom. Many marine annelids are characterized by chaetae or bristles, often coupled with lateral flaps known as parapodia.
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