. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 810 bulletin: museum of comparative zoology ORDER ISOPTERA No extinct families referable to this order have been recognized. The earliest record of the termites is in early Tertiary deposits, which have yielded specimens of Mastotermitidae, Kalotermitids, Hodotermitidae and Rhinotermitidae. ORDER CORRODENTIA Eleven extinct families of this order are included in the following key. An additional family, Asienthomidae (Jurassic of Turkestan), although. Figs. 1173-1178. Corrodentia. 1173. Permembia, fore wing (Tillyard),
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 810 bulletin: museum of comparative zoology ORDER ISOPTERA No extinct families referable to this order have been recognized. The earliest record of the termites is in early Tertiary deposits, which have yielded specimens of Mastotermitidae, Kalotermitids, Hodotermitidae and Rhinotermitidae. ORDER CORRODENTIA Eleven extinct families of this order are included in the following key. An additional family, Asienthomidae (Jurassic of Turkestan), although. Figs. 1173-1178. Corrodentia. 1173. Permembia, fore wing (Tillyard), Permembiidx. 1174. Delopterum, fore wing (Carpenter), Delopteridae. 1175. Zygopsocus, fore wing (Tillyard), Zygopsocidae. 1176. Cyphoneura, fore wing (Carpenter), Lophioneuridac. 1177. Dichentomum, fore wing (Carpenter), Dichentomidx. 1178. Permopsocus, fore wing (Carpenter), Permopsocidae. undoubtedly belonging to the order, is too incompletely known for inclusion in the key. The family Archaemiomopteridae (Upper Carbonif- erous of Germany) can be placed in the Corrodentia only with much doubt. The oldest unquestionable record of the order is in Lower Permian strata of Kansas (Dichentomidae and Permopsocidae). 1. In fore wing, M and CuA anastomosed for a conspicuous part of their lengths 2 M and CuA not anastomosed 4. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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