Marine Flora and Fauna of the Northeastern United States--lichens (Ascomycetes) of the Intertidal Region PDF Download
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Author: Ronald M. Taylor
Publisher:
ISBN:
Category : Lichens
Languages : en
Pages : 36
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Book Description
Author: Ronald M. Taylor
Publisher:
ISBN:
Category : Lichens
Languages : en
Pages : 36
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Book Description
Author: Ronald M. Taylor
Publisher:
ISBN:
Category : Lichens
Languages : en
Pages : 26
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Author: Michael Vecchione
Publisher:
ISBN:
Category : Cephalopoda
Languages : en
Pages : 32
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Book Description
The cephalopods found in neritic waters of the northeastern United States include myopsid and oegopsid squids, sepiolid squids, and octopods. A key with diagnostic illustrations is provided to aid in identification of the eleven species common in the neritic waters between Cape Hatteras and Nova Scotia; included also is information on two oceanic species that occur over the continental shelf in this area and that can be confused with similar-looking neritic species. Other sections comprise a glossary of taxonomic characters used for identification of these species, an annotated systematic checklist, and checklists of the 89 other oceanic species and 18 Carolinian and subtropical neritic species that might occur occasionally off the northeastern United States.
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 74
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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 32
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 862
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Author: Patricia Louise Dudley
Publisher:
ISBN:
Category : Cyclopoida
Languages : en
Pages : 330
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Author: J. A. F. Garrick
Publisher:
ISBN:
Category : Carcharhinus
Languages : en
Pages : 428
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Book Description
Features of the valid nominal species of Aprionodon Gill (isodon Valenciennes) and Hypoprion Müller and Henle (hemiodon Valenciennes, macloti Müller and Henle, and signatus Poey), plus those of a previously unrecognized species here described as Carcharhinus leiodon n.sp., are examined and compared with those of Carcharhinus Blainville. Features studied include morphometrics, vertebral numbers and other vertebral characteristics, tooth numbers, color pattern, and some other aspects of external morphology. It is concluded that on these features C. Leiodon n.sp. is entirely encompassed within the parameters of Carcharhinus, and that, although A. isodon, H. hemiodon, H. macloti, and H. signatus each extend the range of diversity of Carcharhinus in one or more features, A. isodon is not uniquely different from Carcharhinus, and there is no common pattern of difference between the three species of Hypoprion and Carcharhinus. Accordingly, and because the nature of the teeth of Aprionodon and Hypoprion has been found insufficient to warrant generic distinction from Carcharhinus, the genera Aprionodon and Hypoprion are synonymised with Carcharhinus. A diagnosis and description are given for each of the above species. The descriptions include measurements, counts, and line illustrations that show the whole shark in lateral view, underside of head, nostril, and teeth. The geographic distribution is summarized, as are also the meager biological data available on number of embryos, size at birth, size at sexual maturity, and maximum size.
Author: Stephen Leatherwood
Publisher:
ISBN:
Category : Cetacea
Languages : en
Pages : 654
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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 48
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Book Description
