Inadaptation


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Inadaptation

 

the totality of imperfect adaptations that arises in certain groups of animals in the course of evolution and subsequently causes the extinction of those groups. The term “inadaptation” was introduced by the Russian paleontologist V. O. Kovalevskii in 1873. A classic example of inadaptation in the evolution of ungulate mammals is the imperfect changes in the skeleton and joints of the extremities in most groups of ungulates when they changed their mode of locomotion from digitigrade to unguligrade. Inadaptive forms appeared earlier than adaptive ones but were later supplanted by the latter. Thus, placental mammals supplanted marsupials, which were at one time widely distributed but are now preserved only in Australia and America.

References in periodicals archive ?
e] siecle, et constituent dans la plupart des cas des hots insalubres, aban-donnes ou surpeuples, etouffes par la construction progressive d'annexes et souffrant d'une inadaptation aux normes du confort moderne (fig.
Si son origine remonte probablement au debut de ce millenaire, l'Hotel-Dieu, lieu de charite au cEour de la cite qui jouxtait l'eglise Saint-Michel situee sur l'actuelle Place des Halles, ferma ses portes en 1748 pour inadaptation et insalubrite.
Le manque d'accompagnement de ces institutions, leur inadaptation aux grands changements que connaEt la societe marocaine et leur incapacite a etre en harmonie avec les nouveautes technologiques, dont les jeunes d'aujourd'hui ne peuvent desormais se passer sont les principaux motifs qui m'eloignent de ces institutions[beaucoup plus grand que].