Author: George Gaylord Simpson
Publisher:
ISBN:
Category : Mastodon
Languages : en
Pages : 128
Book Description
"One. A large collection, mainly of isolated molars, from Águas do Araxá, Brazil, seems to represent a single population within a species identified as Haplomastodon waringi. The variation, described in some detail, is far greater than has hitherto usually been taken into consideration in the diagnosis of supposed species of mastodonts. 2. Mastodonts have been found at many localities scattered throughout Brazil. A few specimens are anomalous, but the great majority belong to, or are at least inseparable from, H. waringi on the basis of known characters. 3. Ecuadorian Haplomastodon is not at present specifically separable from H. waringi, and neither in Brazil nor in Ecuador is there good evidence of the presence of more than one species (or subgenus). 4. The only species and genera that now seem to be clearly distinct among South American mastodonts are Cuvieronius hyodon, Haplomastodon waringi, and Stegomastodon platensis. All these names have numerous synonyms. The species Stegomastodon superbus and the genus and species Notiomastodon ornatus are also tentatively listed as distinct, but are of doubtful status. 5. Haplomastodon is believed to be about as closely related to Cuvieronius as to Stegomastodon. 6. All the South American mastodonts seem to represent end terms of divergence within a single broad stock. Cuvieronius, Stegomastodon, and probably also Haplomastodon were already differentiated before they spread from North America to South America. The North American Rhynchotherium may belong to the same complex. All may ultimately have arisen from early Old World Anancinae, and all are tentatively referred to that subfamily"--P. 185.
The Mastodonts of Brazil
Author: George Gaylord Simpson
Publisher:
ISBN:
Category : Mastodon
Languages : en
Pages : 128
Book Description
"One. A large collection, mainly of isolated molars, from Águas do Araxá, Brazil, seems to represent a single population within a species identified as Haplomastodon waringi. The variation, described in some detail, is far greater than has hitherto usually been taken into consideration in the diagnosis of supposed species of mastodonts. 2. Mastodonts have been found at many localities scattered throughout Brazil. A few specimens are anomalous, but the great majority belong to, or are at least inseparable from, H. waringi on the basis of known characters. 3. Ecuadorian Haplomastodon is not at present specifically separable from H. waringi, and neither in Brazil nor in Ecuador is there good evidence of the presence of more than one species (or subgenus). 4. The only species and genera that now seem to be clearly distinct among South American mastodonts are Cuvieronius hyodon, Haplomastodon waringi, and Stegomastodon platensis. All these names have numerous synonyms. The species Stegomastodon superbus and the genus and species Notiomastodon ornatus are also tentatively listed as distinct, but are of doubtful status. 5. Haplomastodon is believed to be about as closely related to Cuvieronius as to Stegomastodon. 6. All the South American mastodonts seem to represent end terms of divergence within a single broad stock. Cuvieronius, Stegomastodon, and probably also Haplomastodon were already differentiated before they spread from North America to South America. The North American Rhynchotherium may belong to the same complex. All may ultimately have arisen from early Old World Anancinae, and all are tentatively referred to that subfamily"--P. 185.
Publisher:
ISBN:
Category : Mastodon
Languages : en
Pages : 128
Book Description
"One. A large collection, mainly of isolated molars, from Águas do Araxá, Brazil, seems to represent a single population within a species identified as Haplomastodon waringi. The variation, described in some detail, is far greater than has hitherto usually been taken into consideration in the diagnosis of supposed species of mastodonts. 2. Mastodonts have been found at many localities scattered throughout Brazil. A few specimens are anomalous, but the great majority belong to, or are at least inseparable from, H. waringi on the basis of known characters. 3. Ecuadorian Haplomastodon is not at present specifically separable from H. waringi, and neither in Brazil nor in Ecuador is there good evidence of the presence of more than one species (or subgenus). 4. The only species and genera that now seem to be clearly distinct among South American mastodonts are Cuvieronius hyodon, Haplomastodon waringi, and Stegomastodon platensis. All these names have numerous synonyms. The species Stegomastodon superbus and the genus and species Notiomastodon ornatus are also tentatively listed as distinct, but are of doubtful status. 5. Haplomastodon is believed to be about as closely related to Cuvieronius as to Stegomastodon. 6. All the South American mastodonts seem to represent end terms of divergence within a single broad stock. Cuvieronius, Stegomastodon, and probably also Haplomastodon were already differentiated before they spread from North America to South America. The North American Rhynchotherium may belong to the same complex. All may ultimately have arisen from early Old World Anancinae, and all are tentatively referred to that subfamily"--P. 185.
The Mastodonts of Brazil [by] George Gaylord Simpson [and] Carlos de Paula Couto
Author: George Gaylord Simpson
Publisher:
ISBN:
Category : Mastodons
Languages : en
Pages : 61
Book Description
Publisher:
ISBN:
Category : Mastodons
Languages : en
Pages : 61
Book Description
Mastodonts of Brazil. Bulletin of AMNH ; V. 112, Article 2
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Evolutionary Biology
Author: Theodosius Dobzhansky
Publisher: Springer Science & Business Media
ISBN: 146849063X
Category : Science
Languages : en
Pages : 446
Book Description
Publisher: Springer Science & Business Media
ISBN: 146849063X
Category : Science
Languages : en
Pages : 446
Book Description
The Geologist
Author: Samuel Joseph Mackie
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 664
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 664
Book Description
Brazilian American
Author:
Publisher:
ISBN:
Category : Brazil
Languages : en
Pages : 576
Book Description
Publisher:
ISBN:
Category : Brazil
Languages : en
Pages : 576
Book Description
Scientific Results of a Journey in Brazil by Louis Agassiz and His Travelling Companions
Author: Charles Frederick Hartt
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 674
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 674
Book Description
"Brazil," Past, Present and Future
Author: J. C. Oakenfull
Publisher:
ISBN:
Category : Brazil
Languages : en
Pages : 872
Book Description
Publisher:
ISBN:
Category : Brazil
Languages : en
Pages : 872
Book Description
Scientific Results of a Journey in Brazil
Author: Hartt
Publisher:
ISBN:
Category :
Languages : en
Pages : 678
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 678
Book Description
Fossil Mammalia - Part I - The Zoology of the Voyage of H.M.S Beagle
Author: Richard Owen
Publisher: Read Books Ltd
ISBN: 1528787005
Category : Science
Languages : en
Pages : 174
Book Description
First published in 1842, this vintage book contains part one of Charles Darwin's “The Zoology of The Voyage of H.M.S. Beagle”, a fascinating and detailed account of the research he did whilst aboard the HMS Beagle between 1832 and 1836—work that played a key role in the conception of his scientific theories on evolution and natural selection. This part concentrates on the fossils that he unearthed and studied from around the world, with descriptions and notes. Contents include: “Toxodon Platensis, Description of Cranium”, “Of Lower Jaw and Teeth”, “Macrauchenia Patachonica”, “Cervical Vertebrae”, “Lumbar Vertibrae”, “Scapula”, “Antibrachium and Fore-foot”, “Femur”, “Tibia, Astragalus, and Metatarsal Bone”, “Glossotherium”, etc. Charles Robert Darwin (1809 – 1882) was an English geologist, naturalist, and biologist most famous for his contributions to the science of evolution and his book “On the Origin of Species” (1859). Many vintage books such as this are increasingly scarce and expensive. We are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.
Publisher: Read Books Ltd
ISBN: 1528787005
Category : Science
Languages : en
Pages : 174
Book Description
First published in 1842, this vintage book contains part one of Charles Darwin's “The Zoology of The Voyage of H.M.S. Beagle”, a fascinating and detailed account of the research he did whilst aboard the HMS Beagle between 1832 and 1836—work that played a key role in the conception of his scientific theories on evolution and natural selection. This part concentrates on the fossils that he unearthed and studied from around the world, with descriptions and notes. Contents include: “Toxodon Platensis, Description of Cranium”, “Of Lower Jaw and Teeth”, “Macrauchenia Patachonica”, “Cervical Vertebrae”, “Lumbar Vertibrae”, “Scapula”, “Antibrachium and Fore-foot”, “Femur”, “Tibia, Astragalus, and Metatarsal Bone”, “Glossotherium”, etc. Charles Robert Darwin (1809 – 1882) was an English geologist, naturalist, and biologist most famous for his contributions to the science of evolution and his book “On the Origin of Species” (1859). Many vintage books such as this are increasingly scarce and expensive. We are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.