What does ichthyopterygium mean?
Ichthyopterygium means (comparative anatomy, obsolete) fish fin..
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Pronunciation varies by accent · noun
(comparative anatomy, obsolete) fish fin..
As already stated, they are used more like limbs for walking than fins for swimming, but this physiological resemblance to the limbs of the higher animals is not borne out by a morphological one; the fin is an ichthyopterygium, and shows no tendency towards modification in the direction of a cheiropterygium.
[…]whether the tetrapod limb be derived from an ichthyopterygium like that of the shark, or an archipterygium like that of Ceratodus, or a reduced archipterygium like that of Eusthenopteron[…]
The various adaptations of the ichthyopterygium to locomotion have little bearing on the question of homology.
Use ichthyopterygium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Ichthyopterygium means (comparative anatomy, obsolete) fish fin..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
As already stated, they are used more like limbs for walking than fins for swimming, but this physiological resemblance to the limbs of the higher animals is not borne out by a morphological one; the fin is an ichthyopterygium, and shows no tendency towards modification in the direction of a cheiropterygium.
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