Some Salient Points in the Science of the EarthDawson, John William, Sir
Science
Some Salient Points in the Science of the Earth
Dawson, John William, Sir
Geology; Paleontology
The parts preserved in my specimen are the bones of the anterior and
upper part of the skull in one fragment, and the teeth and palatal
bones in others. These parts were carefully examined and described by
Owen, and the details will be found in his papers referred to in the
note. We may merely observe here that the form and arrangement of the
bones showed batrachian affinities, that the surface of the cranium was
sculptured in the manner of the group of Labyrinthodonts, and that the
teeth possessed the peculiar and complicated plication of the ivory and
enamel seen in creatures of this type. The whole of these characters
are regarded as allying the animal with the great crocodilian frogs
of the Trias of Europe, first known as _Cheirotherians_, owing to the
remarkable hand-like impressions of their feet, and afterwards as
_Labyrinthodonts_, from the beautifully complicated convolutions of the
ivory of their teeth.
Unfortunately the original specimen exhibited only the head, and after
much and frequent subsequent searching, the only other bones found are
a scapula, or shoulder bone, and one of the surface scales which served
for protection, and which indicate at least that the creature possessed
walking limbs and was armed with bony scales sculptured in the same
manner with the skull bones.
Of the general form and dimensions of _Baphetes_, the facts at present
known do not enable us to say much. Its formidable teeth and strong
maxillary bones show that it must have devoured animals of considerable
size, probably the fishes whose remains are found with it, or the
smaller reptiles of the coal. It must, in short, have been crocodilian,
rather than frog-like, in its mode of life; but whether, like the
Labyrinthodonts, it had strong limbs and a short body, or like the
crocodiles, an elongated form and a powerful natatory tail, the remains
do not decide. One of the limbs or a vertebra of the tail would settle
this question, but neither has as yet been found. That there were large
animals of the labyrinthodontal form in the coal period is proved by
the footprints discovered by Dr. King in Pennsylvania, which may have
been produced by an animal of the type of _Baphetes_, as well as by
those of _Sauropus unguifer_ from the Carboniferous of Nova Scotia,
and which would very well suit an animal of this size and probable
form. On the other hand, that there were large swimming reptiles seems
established by the discovery of the vertebræ of _Eosaurus Acadianus_,
at the Joggins, by Marsh.[131] The locomotion of _Baphetes_ must have
been vigorous and rapid, but it may have been effected both on land and
in water, and either by feet or tail, or both. A jawbone found at the
Joggins in Nova Scotia, and to which I have attached the name _Baphetes
minor_, may have belonged to a second species. Great Batrachians allied
to Baphetes, but different specifically or generically, have since been
found in the coal formations of Great Britain, the continent of Europe
Public-domain text, read in full here on John Shaqi.
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