heteˈrochronous, a.
[f. as prec. + -ous.]
a. Path. = heterochronic a.
| 1854 [see heterochronic a.]. |
b. Palæont. [ad. G. heterochron (E. Mojsisovics Die Cephalopoden der Hallstätter Kalke (1893) II. 5).] Originating or formed at different periods.
| 1895 [see homœomorphy]. 1913 Q. Jrnl. Geol. Soc. LXIX. 166 Isochronous and heterochronous homœomorphy state whether the homœomorphous species lived in the same or at different times. 1952 R. C. Moore et al. Invert. Fossils vi. 218 The other category includes two or more shells of different geologic age, in which one simulates the other. These are termed heterochronous homeomorphs. |