Ichnology of New England: A Report on the Sandstone of the Connecticut Valley Especially Its Fossil Footmarks, Made to the Government of the Commonwealth of Massachusetts
Ichnology of New England: A Report on the Sandstone of the Connecticut Valley Especially Its Fossil Footmarks, Made to the Government of the Commonwealth of Massachusetts
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1858 Excerpt: ...four or five-toed track, occasionally associated with these; just in the place where the front foot of a quadruped would fall (see Plate XXV., fig. 6); and so commonly found there on inspection, that I came to the full conviction that this was a quadruped, with tridactyle ornithoid feet behind. But other discoveries ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1858 Excerpt: ...four or five-toed track, occasionally associated with these; just in the place where the front foot of a quadruped would fall (see Plate XXV., fig. 6); and so commonly found there on inspection, that I came to the full conviction that this was a quadruped, with tridactyle ornithoid feet behind. But other discoveries were to come, if I have not identified dissimilar things. On the upper face of a slab, I found the distinct serpentine furrow of an animal's tail, with the indistinct traces of a large and small foot in succession, with a heel quite long. But on splitting off a layer scarcely half an inch thick, I found that the heel and tail had disappeared; but a quite perfect tridactylous track, and a much smaller one close by it, appeared immediately beneath where the imperfect track showed itself on the original surface. How should this be explained: for the tracks on the two surfaces were evidently made by the same animal, and at the same time. I make the supposition that the mud on which the animal trod was quite soft, which caused him to sink, say half an inch, and then the impression of the feet was more perfect, or rather more permanently perfect, than on the upper surface, and when the feet were withdrawn, the tracks at top were almost obliterated by the collapse of the mud, but the heel and tail, not sinking any lower, left more distinct marks. And I think these facts may give us important hints as to other cases of tracks. It may be, indeed, that I have confounded together different tracks in this case; but they are too much alike to be separated. If then we look only at the upper surface of this specimen, (fy) we see only evidence of a long heeled and tailed lizard: but the second layer, although a practiced eye would see on it a quadrupedal track, ...
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Add this copy of Ichnology Of New England: A Report On The Sandstone Of to cart. $21.42, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
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Add this copy of Ichnology Of New England: A Report On The Sandstone Of to cart. $34.12, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
Add this copy of Ichnology Of New England: A Report On The Sandstone Of to cart. $43.80, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
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