作者: Yves Alméras , Annick Boullier
DOI: 10.1080/08912969009386531
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摘要: The study of ontogenetic and morphological changes in different species the brachiopod genus Caryona COOPER (Terebratulidae) from Lower Callovian‐Lower Oxfordian northern France shows a succession (and an interference) processes which vary according to characters studied. This is example “mosaic evolution”;. result heterochrony, especially acceleration hypermorphism. main phylogenetic tendency peramorphosis most characters. evolutionary pattern agrees with phyletic gradualism. Moreover, analysis internal demonstrates limited value these discrimination various genera.