| 单词 | foraminifer |
| 释义 | foraminifer (once / 454589 pages) n WORD FAMILY foraminifer: foraminifers USAGE EXAMPLESCertain small foraminifers, for example, met with in some of the oldest formations, do not seem to differ from species which are still living. Geikie, James, Geology(2011) Upon the whole, though presenting some curious affinities to the calcareous Sponges, Stromatopora is perhaps more properly regarded as a gigantic Foraminifer. Nicholson, Henry Alleyne, The Ancient Life History of the Ear...(2010) Beds of gneiss and quartzite, with interstratified limestones, in one of which, 1000 feet thick, occurs a foraminifer, Eozoon Canadense, the oldest known fossil. Lyell, Charles, Sir, The Student's Elements of Geology(2010) n marine microorganism having a calcareous shell with openings where pseudopods protrude Syn|Hypo|Hyper foram globigerina marine protozoan having a rounded shell with spiny processes nummulitelarge fossil protozoan of the Tertiary period rhizopod, rhizopodan protozoa characterized by a pseudopod |
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