The Ancient Life History of the Earth - LightNovelsOnl.com
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VERTEBRA (Lat. _verto_, I turn). One of the bony segments of the vertebral column or backbone.
VERTEBRATA (Lat. _vertebra_, a bone of the back, from _vertere_, to turn). The division of the Animal Kingdom roughly characterised by the possession of a backbone.
VESICLE (Lat. _vesica_, a bladder). A little sac or cyst.
WHORL. The spiral turn of a univalve sh.e.l.l.
XIPHOSURA (Gr. _xiphos_, a sworn; and _oura_, tail). An order of _Crustacea_, comprising the _Limuli_ or King-Crabs, characterised by their long sword-like tails.
XYLOBIUS (Gr. _xulon_, wood; _bios_, life). An extinct genus of Myriapods, named in allusion to the fact that the animal lived on decaying wood.
ZAPHRENTIS (proper name). A genus of Rugose Corals.
ZEUGLODONTIDae. (Gr. _zeugle_, a yoke; _odous_, a tooth). An extinct family of Cetaceans, in which the molar teeth are two-fanged, and look as if composed of two parts united by a neck.
ZOOPHYTE (Gr. _zoon_, animal; _phuton_, plant). Loosely applied to many plant-like animals, such as Sponges, Corals, Sea-anemones, Sea-mats, &c.
