. The chain of life in geological time [microform] : a sketch of the origin and succession of animals and plants. Paleontology; Paleobotany; Paléontologie; Paléobotanique. THE FIRST AIR-BREATHERS. 151 first trace ever observed of batrachians in the Carboniferous consisted of a series of small but well-marked footprints found by the late Sir W. E. Logan in the Lower Carboniferous shales of Horton Bluff, in Nova Scotia. In that year this pains- taking geologist had examined the coal-fields of Pennsylvania and Nova Scotia, with the view of following up his important discovery of the StigmaricB, o
. The chain of life in geological time [microform] : a sketch of the origin and succession of animals and plants. Paleontology; Paleobotany; Paléontologie; Paléobotanique. THE FIRST AIR-BREATHERS. 151 first trace ever observed of batrachians in the Carboniferous consisted of a series of small but well-marked footprints found by the late Sir W. E. Logan in the Lower Carboniferous shales of Horton Bluff, in Nova Scotia. In that year this pains- taking geologist had examined the coal-fields of Pennsylvania and Nova Scotia, with the view of following up his important discovery of the StigmaricB, or roots of Sigillaria, as accom- paniments of the coal-underclays. On his return he read a paper, detailing his observations, before the Geological Society ot London. In this he mentioned the footprints in question. Fig. 122.—Caxhomiexows Scot\aotv {Eoscor/>ius carbonnrius, Meek and Worthen). Illinois. but the paper was published only in abstract, and the import- ance of the discovery was overlooked for a time, the anatomists evidently being shy to acknowledge the validity of the evidence for a fact so unexpected. Fig. 133 is a representation of another slab subsequently found in beds of the same age in Nova Scotia, and which may serve to indicate the nature of Sir William's discovery. In consequence of the neglect of this first hint by the London geologists, the discovery of bones of a batrachian by von Dechen at Saarbruck in 1844, and that of footprints by King in Pennsylvania in the same year, are usually represented as the first facts of this kind. My own earliest discovery of reptilian bones in Nova Scotia was made in 1844,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dawson, J. W. (John William), Sir, 1820-1899. London : Religious Tract Society
Size: 1801px × 1387px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectpaleontology, bookyea
