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Old Red Sandstone System (1659 words) |
 | The specimens in the lower beds are not above the size of a flounder; but in the higher strata, to judge by the size of the scales or plates which have been found, the creature attained a comparatively monstrous size. |
| The other fishes of the system, - the osteolepis, glyptolepis, dipterus, andc., are, in general outline, much like fishes still existing, but their organization has, nevertheless, some striking peculiarities. |
| They have been entirely covered with bony scales or plates, enamelled externally; their spines are tipped with bone, and, as one striking and unvarying feature, the tail is only finned on the lower side. |
| Palaeos Vertebrates 140.830 Sarcopterygii: Osteolepiformes (2) (1844 words) |
| Image: (of fossil) Osteolepis from the University of Birmingham, Lapworth Museum. |
| Note the marked difference between this structure and that of Osteolepis. |
| Eusthenopteron has vertebrae with an even looser pattern than Osteolepis, but with a short rib stabilizing the connection between intercentra and neural arches. |
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