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- noun Plural form of
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- These - bundles, we may mention -, are called myomeres, and they are indicated in Figure 1 by lines pointing acutely forward.
One might argue that the axial band-like visceral cavity of Vetustovermis planus is a notochord and that the transverse bars are not gills but myomeres, thereby indicating this animal was a chordate.
Similar myomeres, similarly situated, are found in fish, behind the head, and, less obviously, they occur with diminishing importance as the scale of the vertebrata is ascended.
The segments alternate with the vertebrae, and are called myomeres.
We have seen a certain intermediateness of structure in the frog, as compared with the rabbit and dog-fish, notably in the skull and skeleton, in the circulation, in the ear, and in the reduced myomeres; and we have seen that the rabbit passes in these respects, and in others, through dog-fish - and frog-like stages in its development, and this alone would be quite sufficient to suggest that the similarities of structure are due to other causes than a primordial adaptation to certain conditions of life.