WorldCat Identities

Hopson, James Allen

Overview
Works: 16 works in 28 publications in 3 languages and 374 library holdings
Roles: Author, Honoree
Publication Timeline
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Most widely held works about James Allen Hopson
 
Most widely held works by James Allen Hopson
The functional significance of the hypocercal tail and lateral fin fold of Anaspid ostracoderms by James Allen Hopson( Book )

4 editions published in 1974 in English and held by 62 WorldCat member libraries worldwide

Collected Papers by James Allen Hopson( Book )

1 edition published in 1967 in Undetermined and held by 26 WorldCat member libraries worldwide

Basicranial anatomy of Priacodon fruitaensis (Triconodontidae, Mammalia) from the Late Jurassic of Colorado, and a reappraisal of mammaliaform interrelationships by Guillermo W Rougier( Book )

3 editions published in 1996 in English and held by 16 WorldCat member libraries worldwide

The braincase of the advanced mammal-like reptile Bienotherium by James Allen Hopson( Book )

4 editions published between 1964 and 1965 in English and held by 9 WorldCat member libraries worldwide

Amniote paleobiology : perspectives on the evolution of mammals, birds, and reptiles : a volume honoring James Allen Hopson by Matthew T Carrano( Book )

2 editions published in 2006 in English and held by 9 WorldCat member libraries worldwide

Pseudodontornis and other large marine birds from the Miocene of South Carolina by James Allen Hopson( Book )

2 editions published in 1964 in English and held by 8 WorldCat member libraries worldwide

Functional significance of the hypocercal tail and lateral fin fold of Anaspid ostracoderms / James A. Hopson -- by James Allen Hopson( )

1 edition published in 1974 in English and held by 2 WorldCat member libraries worldwide

Cricodon metabolus (Cynodontia: Gomphodontia) from the Triassic Ntawere Formation of northeastern Zambia: patterns of tooth replacement and a systematic review of the Trirachodontidae( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

ABSTRACT: The partial skull and postcranial skeleton of a subadult Cricodon metabolus is described as the first record of a trirachodontid cynodont from the upper Ntawere Formation of northeastern Zambia. On the basis of features in the type and referred specimen, Cricodon metabolus can be diagnosed by the presence of a posterior cingulum in the lower postcanines that opens labially in a 'V'-shaped notch between a large basal cuspule and the steeply descending posterior ridge of the principal labial cusp, and by a pair of large foramina on the maxillary shelf. The subadult specimen shows evidence for four series of postcanine teeth, including a wave of small gomphodont teeth being replaced by a younger wave of larger gomphodont teeth. Cladistic analysis of 75 characters in 27 cynodonts recovers Trirachodontidae as a clade that is the sister taxon of Traversodontidae. Trirachodontidae includes four species, with Langbergia modisei as the earliest diverging taxon. Our analysis also recovers ' Trirachodon ' kannemeyeri as the sister taxon of Cricodon metabolus, leading us to transfer the former species to the genus Cricodon. Trirachodon berryi is determined to be a valid taxon that is sister to Cricodon . Two reputed trirachodontids from China, Sinognathus gracilis and Beishanodon youngi, do not appear as trirachodontids in our analysis but rather resolve as sister taxa within Traversodontidae. Although this hypothesis of relationships is not supported by the current analysis, we suggest that the two Chinese species might be probainognathians that convergently evolved expanded postcanine teeth rather than gomphodontians. Citation for this article: Sidor, C. A., and J. A. Hopson. 2018. Cricodon metabolus (Cynodontia: Gomphodontia) from the Triassic Ntawere Formation of northeastern Zambia: patterns of tooth replacement and a systematic review of the Trirachodontidae; pp. 39–64 in C. A. Sidor and S. J. Nesbitt (eds.), Vertebrate and Climatic Evolution in the Triassic Rift Basins of Tanzania and Zambia. Society of Vertebrate Paleontology Memoir 17. Journal of Vertebrate Paleontology 37(6, Supplement)
Vertebrate paleontology : new approaches and new insights by James Allen Hopson( Book )

1 edition published in 1980 in English and held by 1 WorldCat member library worldwide

Dentary-squamosal joint and the origin of mammals by Herbert Barghusen( Book )

1 edition published in 1970 in English and held by 1 WorldCat member library worldwide

Waren die Dinosaurier Warmblüter? by James Allen Hopson( Book )

in German and held by 1 WorldCat member library worldwide

J[ack] John Sepkoski Jr (1948-1999) : nekr. by Michael J Foote( )

1 edition published in 1999 in Polish and held by 1 WorldCat member library worldwide

The mammal-like reptiles : a study in transitional fossils by James Allen Hopson( Book )

1 edition published in 1987 in English and held by 1 WorldCat member library worldwide

In memorial, J. John Sepowski Jr. (1948-1999) [obituary] by Michael J Foote( )

1 edition published in 1999 in English and held by 1 WorldCat member library worldwide

A revised classification of cynodonts (Reptilia ; Therapsida) by James Allen Hopson( Book )

1 edition published in 1972 in English and held by 1 WorldCat member library worldwide

The Classification of Nontherian Mammals by James Allen Hopson( )

in Undetermined and held by 0 WorldCat member libraries worldwide

 
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Amniote paleobiology : perspectives on the evolution of mammals, birds, and reptiles : a volume honoring James Allen Hopson
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Alternative Names
Hopson, James A.

Hopson, James A. 1935-

Hopson, James Allen.

Hopson, Jim

Hopson, Jim 1935-

James Hopson American paleontologist

James Hopson Amerikaans paleontoloog

James Hopson Paléontologue américain

ジェームズ・ホプソン

Languages
English (24)

German (1)

Polish (1)