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Category : Botany
Languages : en
Pages : 156
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Author:
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ISBN:
Category : Botany
Languages : en
Pages : 156
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Category : Paleontology
Languages : en
Pages :
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Author: New York State Museum of Natural History
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Category :
Languages : en
Pages :
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Author:
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ISBN:
Category : Botany
Languages : en
Pages : 160
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Category : Botany
Languages : en
Pages : 0
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Author: New York State Museum
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Category :
Languages : en
Pages :
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Author: Charles E. Beecher
Publisher: Forgotten Books
ISBN: 9780265226971
Category : Science
Languages : en
Pages : 130
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Excerpt from Memoirs of the New York State Museum, Vol. 1: The Development of Some Silurian Brachiopoda In the case of rare species, or of meager material belonging to common forms, it is to be noticed that assertions regarding specific and generic characters are usually Very positive; while, with an abundance of speci mens representing many stages of growth and the extremes of individual variation, the descriptions are qualified, the latitude of genera and species is extended, and the points of relationship with allied forms are multiplied, thus binding a group of organisms into comparative uniformity, without anomalous differences such as often occur where the dividing lines are rigidly drawn. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author:
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Category : Botany
Languages : en
Pages : 300
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Author: John M. Clarke
Publisher: Forgotten Books
ISBN: 9780656120369
Category : Science
Languages : en
Pages : 152
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Excerpt from Memoir of the New York State Museum, Vol. 3: October 1900 The fauna in its highest development is found at Becraft moun tain, about 2 miles east of the Hudson river, near the city of Hud son in Columbia county. Strata of the same horizon occur at other localities in the state and carry some of the characteristic species which appear in profusion on Becraft mountain. Such outcrops are found in Ulster and Orange counties on the west side of the Hudson, but they quickly disappear in the westward extension of the Oriskany formation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: New York State Museum
Publisher: Rarebooksclub.com
ISBN: 9781230070049
Category :
Languages : en
Pages : 130
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ...were described by Claypole as E u r y s o m a n e w lini 189o, p. 259. The term Eurysoma was soon after withdrawn by its author as preoccupied and was replaced by Carcinosoma. In 1894 another species (C. ingens) from the same locality was added and Eusarcus indicated as the nearest ally of the new genus, with the following qualification: _ " But the description of that genus Eusarcus mentions that the cephalothoracic portion is considerably narrower than in allied forms and that the terminal segment shows a widening and no trace of spiniform process. There are also several other minor points Of difference." None of the differences here-suggested by Claypole r619111)' exist, for our working material, which probably comprises nearly all Kokomo specimens ever collected, shows this carapace to have quite the same subtfiilngular form as in the Buffalo specimens, while both possess an ensiform telson. There are only minor differences between the Buffalo and Kokomo specimens; the latter are undoubtedly congeneric and the term Carcinosoma has to yield to Eusarcus. From the study of the large collection of material representing the genotype we consider the genus as characterized by (1) the triangular carapace, (2) the marginal and forward position of the eyes, (3) the decrease in length of the walking legs backward, (4) the spinosity of all walking legs, (5) the broad elliptic to subcircular preabdomen, (6) the sharply defined, greatly lengthened, cylindrical postabdomen, (7) the broad and short, subtriangular metastoma, (8) the distinctive proportions of the segments of the swimming legs. These characters, we believe, are correlated and shared by a number of species which thus constitute a well defined group. We have been able...
