The early phylogeny of Anguimorpha as implicated by craniologlcal data

• Autorzy: Borsuk-Bialynicka M.
• Języki publikacji: EN

Abstrakty

EN

The problem of homology versus analogy of different craniological character states shared by Anguimorpha and Scincomorpha is analyzed. Only two character states, if any, may be tentatively considered as synapomorphies in both taxa. These are: low, tubular skull shape and broad, flat frontals. Other craniological features displaying similar states in both infraorders are regarded as parallel structures. Morphoclinal sequences of states of different craniological characters are proposed. The derived pattern of tooth replacement is regarded as the earliest and the most important achievement of the anguimorphan lizards which is probably the only autapomorphy of this infraorder. A certain pattern of the brain case is regarded as synapomorphic in the Platynota and Diploglossa, the two superfamilies that probably do not cover the range of the infraorder.

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 1983
• Tom: 28
• Numer: 1-2
• Opis fizyczny: p.31-42,fig.,ref.

Twórcy

autor

Borsuk-Bialynicka M.

• Institute of Paleobiology, Polish Academy of Sciences, Al.Zwirki i Wigury 93, 02-089 Warsaw, Poland

Bibliografia

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