from The Century Dictionary and Cyclopedia

  • n. The typical genus of Holoptychiidæ: so called from the wrinkled enamel-scales.


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  • When we pass to the upper formation, we find the holoptychius the most characteristic fossil.

    The World's Greatest Books — Volume 15 — Science

  • The holoptychius is of a flat oval form, furnished with fins, and ending in a long tail; the whole body covered with strong plates which overlap each other, and the head forming only a slight rounded projection from the general figure.

    Vestiges of the Natural History of Creation

  • Some of the fossils of this system, -- the cephalaspis, coccosteus, pterichthys, holoptychius -- are, in form and structure, entirely different from any fishes now existing, only the sturgeon family having any trace of affinity to them in any respect.

    Vestiges of the Natural History of Creation


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