By E. K. Balon (auth.), John A. Musick, Michael N. Bruton, Eugene K. Balon (eds.)
...this ebook might rank because the most vital contribution tocoelacanth biology ever published.
Copeia
' through providing this message as its final analysis, this publication may rank because the most crucial contribution to coelacanth biology ever released. 'Copeia three 1992
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Additional info for The biology of Latimeria chalumnae and evolution of coelacanths
Sample text
Morphology of the skull roof also has changed during the evolution of the actinistians and shows trends toward both reductions and increases. , intertemporal, supratemporal, and tabular). , intertemporal, supratemporal, and tabular bordering the postparietallaterally) rather than a Type-Yin which the postparietal has an inverted-L-shape formed by an anterolateral process (as proposed by Andrews 1973). After the differentiation of the preparietals into two rows, there is a decremental tendency toward reduction of the number of preparietals per row (from four to two).
Dorsal lamina of premaxilla, completeness of dorsal margin: 0= dorsal lamina of premaxilla complete; 1 = dorsal lamina of premaxilla invaginated medially; 2 = dorsal lamina of premaxilla reduced. Dorsal lamina of premaxilla, perforation: 0= dorsal lamina perforated by rostral commissure; 1 = dorsal lamina not perforated by rostral commissure. Preparietal, number ofrows: 0= mosaic of elements (undifferentiated preparietals); 1 = presence of one row of preparietals across the skull roof; 2 = presence of two rows of preparietals across the skull roof; 3 = presence of three rows of preparietals across the skull roof.
13. 14. Cosmine: presence of cosmine; I = absence of cosmine. Scale ornamentation: 0= scale with longitudinal ridges and tubercules; 1 = scale only with longitudinal ridges. Sensory canal pores, size: 0= small supraorbital canal pores; 1 = large supraorbital canal pores. Premaxillae, number: 0= paired (and unpaired) premaxillae; 1 = fragmented premaxillae. Dorsal lamina of premaxilla, completeness of dorsal margin: 0= dorsal lamina of premaxilla complete; 1 = dorsal lamina of premaxilla invaginated medially; 2 = dorsal lamina of premaxilla reduced.