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AMBULACRAL - 2 reference results
Ambulacral
Ambulacral is a term typically used in the context of anatomical parts of the phylum Echinodermata or class Asteroidea. Echinoderms can have ambulacral parts that include ossicles, plates, spines, and suckers. For example, sea stars or "star fish" have an ambulacral groove on their oral side (underside). This ambulacral groove extends from the mouth to the end of each ray or arm. Each groove of each arm in turn has four rows of hollow tube feet that can be extended or withdrawn. Opposite the ambulacral groove is an ambulacral ridge on the aboral side of each ray.

Sources

  • http://www.palaeos.com/Invertebrates/Echinoderms/Echinodermata.Glossary.html
  • http://tolweb.org/Asteroidea

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ambulacral
Jan 01, 1999; ambulacral Applied to those areas of the body of an echinoderm that bear tube feet .
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ambulacral groove
Jan 01, 1999; ambulacral groove See AMBULACRUM .
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Ossicular homologies, systematics, and phylogenetic implications of certain North American Carboniferous asteroids (Echinodermata)
May 01, 2003; ABSTRACT-Emphereaster missouriensis new genus and species, Ambigaster, new genus, and Delicaster, new genus are assigned to the...
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Ontogeny in the fossil record: diversification of body plans and the evolution of "aberrant" symmetry in Paleozoic echinoderms
Jan 01, 2007; Abstract.- Echinoderms have long been characterized by the presence of ambulacra that exhibit pentaradiate symmetry and define...
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TWO LATE ORDOVICIAN ASTEROIDS (ECHINODERMATA) WITH CHARACTERS SUGGESTIVE OF EARLY OPHIUROIDS
Nov 01, 2007; ABSTRACT- Jugiaster n. gen. is based on the Upper Ordovician asteroid (Echinodermata) Petraster speciosus; in addition, a second...
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