Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2024, Номер 99(5), С. 1613 - 1637
Опубликована: Апрель 10, 2024
ABSTRACT The question of what the ancient life cycle tetrapods was like forms a key component in understanding origin land vertebrates. existence distinct larval forms, as exemplified by many lissamphibians, and their transformation into adults is an important aspect this field. temnospondyls, largest clade Palaeozoic–Mesozoic non‐amniote tetrapods, covered wide ecomorphological range from fully aquatic to terrestrial taxa. In various species, rich ontogenetic data have accumulated over past 130 years, permitting study early phases temnospondyl development. eight been identified which skeleton formed. branchiosaurids eryopiform Sclerocephalus , large parts ossification sequence are now known. Most taxa small specimens preserved had larvae with external gills that superficially resemble salamanders. edopoids, dvinosaurs, eryopiforms, developed slowly, incompletely ossified axial appendicular skeletons, but possessed fast‐developing dermal skull strong teeth. Irrespective adult terrestriality or life, there no drastic during later ontogeny, slow steady acquisition features. dissorophoids, limbs at much faster pace, whereas formation slowed down, especially amphibamiforms, culminating neotenic Branchiosauridae. zatracheid Acanthostomatops profound led adult. basal dissorophoid Stegops retained rapid development bones established dentigerous, strongly palate early. Micromelerpeton last slightly delayed metamorphosis remained long phase morphological transformations. became more drastic, increasing number events packed short ontogeny. This Apateon Platyrhinops Amphibamus condensation maximised. We distinguish three different types (morphological, ecological drastic) evolved cumulatively within temnospondyls.
Язык: Английский