† Polythalamianadj.n.
Zoology. Obsolete.
A. adj.
Of or relating to the former division Polythalamia of rhizopods (cf. Polythalamia n.).
ΘΚΠ
the world > animals > invertebrates > protozoa > class Sarcodina > order Rhizopoda > [adjective] > relating to Foraminifera > belonging to Polythalamia
Polythalamian1844
1844 Amer. Jrnl. Sci. 46 299 We notice Biddulphia pulchella, a truly elegant form... We have also recently found it, in company with many other beautiful infusorial and Polythalamian forms, in mud adhering to oysters.
1854 J. W. Bailey Notes Microsc. Organisms in Smithsonian Contrib. Knowl. 7 iii. 3 The Californian deposit also appears to be entirely free from any Polythalamian shells.
1863 C. Lyell Geol. Evid. Antiq. Man (ed. 3) App. 529 Mr. Chydenius obtained..polythalamian shells.
B. n.
A rhizopod of the former division Polythalamia.
ΚΠ
1844 Amer. Jrnl. Sci. 46 306 The species included in the list for this locality, are all fluviatile except the Polythalamian Rotalia globulosa.
1865 Philos. Trans. (Royal Soc.) 155 361 It appears that the Polythalamous Foraminifera are often..viviparous, and that the young shell, when hatched, consists of two chambers. We think that the subsequent chambers of these Polythalamians are not always formed slowly, one by one.
1884 Ann. & Mag. Nat. Hist. 14 356 I could not observe the Polythalamian in full vital activity.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online June 2018).
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adj.n.1844