/ˈɒstrəkəʊd/, U.S. /ˈɑstrəˌkoʊd/. ostracodn.adj.
/ˈɒstrəkɒd/, U.S. /ˈɑstrəˌkɑd//ˈɒstrəkəʊd/, U.S. /ˈɑstrəˌkoʊd/. Zoology.
A. n.
A crustacean of the class Ostracoda: see Ostracoda n.
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [noun] > subclass Entomostraca > order Ostracoda > member of
ostracod1842
ostracothere1876
ostracopod1903
1842 W. T. Brande Dict. Sci., Lit. & Art 862/2 Ostracodes. Ostrocoda... The name of a family of Entomostracans comprehending those which have the shell folded in two, so as to resemble the shell of a bivalve mollusk.
1865 Athenæum No. 1983. 571/2 The little modest ostracods and phyllopods.
1871 Amer. Naturalist 4 755 We already find highly organized Trilobites, Phyllopods, and Ostracodes in the lowest Silurian strata.
1935 W. H. Twenhofel & R. R. Shrock Invertebr. Paleontol. x. 436 Ostracods are small, bivalved Crustacea which are found inhabiting all waters but are most abundant in marine habitats.
1957 New Biol. 24 70 Some of the ostracods..possess haemoglobin.
1974 A. Dillard Pilgrim at Tinker Creek viii. 132 An ostracod, a common fresh-water crustacean of the sort I crunch on by the thousands every time I set foot in Tinker Creek.
1988 Nature 14 Apr. 639/2 The ostracodes and charophytes from the same beds suggest close affinities to taxa from the late Cretaceous Nemegt Basin of Mongolia.
1998 New Scientist 21 Nov. 42/2 He first noticed the telltale microscopic grooves on the antennae of another type of crustacean, an ostracod or seed shrimp.
B. adj.
Of, relating to, or characteristic of the class Ostracoda; containing the fossil remains of ostracods.
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [adjective] > belonging to Ostracopoda
ostracopodous1857
ostracod1870
ostracodal1887
1870 H. A. Nicholson Man. Zool. I. xxxv. 196 Small Ostracode Crustacea..as fossils..extend from the Lower Silurian period up to the present day.
1875 Amer. Naturalist 9 538 We may recognize in the Leperditia an ostracod Crustacean closely allied to forms still living in the seas and fresh waters.
1953 H. Mellanby Animal Life in Fresh Water (ed. 5) vii. 84 Ostracod crustacea are exceedingly common in almost any fresh-water pond containing green water-plants.
1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles viii. 164 Ostracod shales were laid down contemporaneously in deeper waters in the Torquay area.
1974 Smithsonian Contrib. Earth Sci. No. 13. 22/1 Constituents were counted and grouped in the following classes:..other (including ostracode valves, sponge spicules, unidentifiable fragments, etc.).
1997 Eng. Nature Nov. 3/2 The host of small ostracod fossils for which the Wenlock limestone cliff was notified as an SSSI in the first place.
Derivatives
ostraˈcodal adj.
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [adjective] > belonging to Ostracopoda
ostracopodous1857
ostracod1870
ostracodal1887
1887 H. H. Howorth Mammoth & Flood 372 The ostracodal fauna..in the seas of Australia and the Malay Peninsula.
1945 Jrnl. Paleontol. 19 81 (title) A contribution to ostracodal ontogeny.
1997 Jrnl. Paleolimnol. 17 421 Values of delta 18O in ostracodal calcite are quite variable (−4 to +9 per mille) in sediment from the late Sangamon subepisode.
ΚΠ
1882 Amer. Naturalist 16 791 The Phyllopodous and Ostracodous limbs.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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n.adj.1842