acentrous

acentrous
lacking vertebral centra

"Some bony fishes (Teleostei, Amia, Lepisosteus, and Brachiopterygii) have well-ossified centra and neural and hemal arches. Others (Dipnoi, Latimeria, and Chondrostei) lack centra (acentrous), and the notochord is unconstricted, and the bony neural and hemal arches simply rest on it."


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Look at other dictionaries:

  • acentrous — without vertebral centra, with persistent notochord, e.g. Dipnoi, Holocephali …   Dictionary of ichthyology

  • acentrous — acen·trous …   English syllables

  • acentrous — (ˈ)ā|sen.trəs adjective Etymology: a (II) + centr + ous of some primitive fishes : having the notochord persistent through life and lacking vertebral centra …   Useful english dictionary

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