On the Homeomorphy of Vertical Reticulate Colonies of Some Bryozoans of the Class Stenolaemata

Some cases of heterochronic homeomorphy in individual representatives of bryozoans of four orders of the class Stenolaemata are discussed in the article. Homeomorphy is expressed not only at the level of the type and structure of the colonies, but also in the structure of branches and the framing of fenestrules in the erect bilateral reticulate colonies of Rorypora gunibensis (order Cyclostomata, Lower Cretaceous of Dagestan) and Phaenoporella multipora (order Cryptostomata, Upper Ordovician of Siberia). Homeomorphy of erect unilateral reticulate colonies of bryozoans Parachasmatopora sp. (order Fenestrata, Upper Ordovician of Siberia) and Goniocladia subpulchra (order Cystoporata, Upper Carboniferous of the Moscow region) is expressed only at the level of the type and structure of colonies, as well as the framing of fenestrules. At the same time, the structure of zooids and other intracolonial elements of the studied bryozoans are different and reflect the morphological characteristics of a particular order.