Oryctos
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Accès privé :
| volume 4, 2002 |
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Kathrin Dietze, Heterochrony within Amblypterydae (Actinopterygii; Permo-Carboniferous)? Oryctos 4, 3-15.
Certain morphological traits of the Amblypteridae, i.e. Amblypterus and Paramblypterus, suggest local heterochromic processes by paedomorphosis. Since data on the ontogenetic stages of an ancestral paramblypterid species are not available, Elonichthys palatinus, a fairly basal actinopterygian species, is used as a model for the potential ontogeny to polarize patterns of heterochrony in the Amblypteridae. Presumaly, ornamentation and shape of the skull, squamation, and growth of the opercular series of Paramblypterus and/or Amblypterus were affected by processes related to heterochrony.
Keywords: lower actinopterygians, Permo-carboniferous, heterochrony, paedomorphosis, skull, squamation, opercular series
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