ambulacral areas
(ECHINODERMATA: Asteroidea)
The radially arranged arms (typically 5) bearing the tube feet or podia; see interambulacral areas.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • ambulacral — adjective Date: 1836 of, relating to, or being any of the radial areas of echinoderms along which run the principal nerves, blood vessels, and elements of the water vascular system < ambulacral grooves > …   New Collegiate Dictionary

  • interambulacral areas — (ECHINODERMATA: Echinoidea) The radially arranged arms (typically 5) that do not bear tube feet or podia; see ambulacral areas …   Dictionary of invertebrate zoology

  • Sea cucumber — For the food product made from sea cucumber, see Sea cucumber (food). Sea cucumber A sea cucumber from the Mediterranean Sea Scientific classification …   Wikipedia

  • Crinoid — Crinoids Temporal range: Ordovician Recent …   Wikipedia

  • Cystoids — Temporal range: Middle Ordovician–Permian …   Wikipedia

  • interpetaloid — adj. [L. inter, between; Gr. petalon, leaf] (ECHINODERMATA: Echinoidea) Area between ambulacral areas …   Dictionary of invertebrate zoology

  • ocular plates — (ECHINODERMATA: Echinoidea) Plates at the terminal end of the ambulacral areas …   Dictionary of invertebrate zoology

  • sphaeridium — n.; pl. idia [Gr. dim. sphaira, ball] (ECHINODERMATA) Minute, spherical bodies covered by ciliated epidermis, usually lodged in pits in the test or almost completely enclosed; confined to the ambulacral areas around the mouth or scattered along… …   Dictionary of invertebrate zoology

  • interpetaloid — “+ adjective Etymology: inter + petaloid : lying between ambulacral areas interpetaloid spaces on a sea urchin * * * adj …   Useful english dictionary

  • pentremites — ˌpen.trəˈmīˌtēz noun Usage: capitalized Etymology: New Latin, from penta (from Greek) + Greek trēma hole + New Latin ites more at throw : a genus (the type of the family Pentremitidae) comprising Mississippian bla …   Useful english dictionary

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