| 释义 |
hystrichosphere Palæont.|ˈhɪstrɪkəʊsfɪə(r)|
[ad. mod.L. hystrichosphæra (O. Wetzel 1933, in Palaeontographica A. LXXVIII. 32), f. Gr. ὕστριξ, ὑστριχ- porcupine + σϕαῖρα ball.]
Any of numerous kinds of microscopic planktonic fossil organisms characterized by a spherical or oval shape with numerous short thin projections.
1957Q. Jrnl. Geol. Soc. CXII. 416 In the clays, dinoflagellates and hystrichospheres were abundant and formed a considerable proportion of the combustible organic matter. 1963Palaeontology VI. 83 The hystrichospheres having spines closed distally exhibit an overall range in shell diameters from 5 µ to 240 µ. |