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Echiura
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Introduction to this small phylum, closely related to the Annelids, from UCMP Berkeley.
http://www.ucmp.berkeley.edu/annelida/echiura.html
Echiurans are marine worms that burrow into mud or sand or live in empty shells.
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Minor Invertebrate Phyla Phylum Echiura Echiurans are marine worms that burrow into mud or sand or live in empty shells. They are found in all oceans, most commonly in littoral zones of warm waters. They are more diverse than sipunculans despite there being fewer species...A talk by Alissa Arp about Hydrothermal Vents, Deep Sea Vents, Seeps and Estuarine Mud--Life with Toxic Sulfide - Taxa included are Pogonophora and Echiura
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Life with Toxic Sulfide: Page 1 I want to do today is talk with you about a number of animals, from three different habitats that live in the presence of a toxic gas, hydrogen sulfide. Hydrogen sulfide is a naturally occurring compound. It smells like rotten...Immunohistochemical analysis (cLSM) of the development and organization of the nervous system in Echiura and the phylogenetic implications of these results. The work of Rene Hessling shows volume rendered three-dimensional reconstructions of the central nervous system of Bonellia viridis. The results suggest that the Echiura do not form a distinct phylum but should be consided as a subtaxon of Annelida.
http://www.biologie.uni-osnabrue...ellezoologie/Hessling/index.html
MPEG files of Urechis caupo (Echiura) feeding behavior and summary of corresponding paper.
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Julian: Urechis caupo research Urechis caupo feeding behavior These videos were created by Jeffrey R. Judd. The worm is in an artificial burrow constructed of clear acrylic. In these videos, the worm is in one of the vertical arms of the burrow. The red...