Zobrazeno 1 - 8
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pro vyhledávání: '"Shawn A. Hamm"'
Autor:
Shawn A. Hamm
Publikováno v:
Transactions of the Kansas Academy of Science. 123
Three teeth of the late Cretaceous shark Ptychodus latissimus (Agassiz) are described from the upper Middle Turonian Codell Sandstone Member of the Carlile Shale. These teeth are significant because they are the first documented occurrence of the spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb45b52c52094e898817018d236510b1
https://doi.org/10.1660/062.123.0311
https://doi.org/10.1660/062.123.0311
Autor:
Shawn A. Hamm
Publikováno v:
Transactions of the Kansas Academy of Science. 120:17-30
Tooth remains of the elasmobranch Ptychodus are common in Late Cretaceous marine in both nearshore and deep water deposits worldwide. Although they are typically found as isolated tooth specimens, associated or articulated specimens are very rare. De
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9326bca97da1fcadb7c275dc18d8077d
https://doi.org/10.1660/062.120.0103
https://doi.org/10.1660/062.120.0103
Autor:
Shawn A. Hamm
Publikováno v:
Transactions of the Kansas Academy of Science. 122:1
Isolated tooth specimens of the Late Cretaceous shark Ptychodus anonymus Williston 1900 are common occurrences in the Cenomanian and Turonian deposits throughout the Western Interior Seaway. Reported here is an association of 58 teeth of P. anonymus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b088e8609ab11262a0adb9b747ab07c
https://doi.org/10.1660/062.122.0101
https://doi.org/10.1660/062.122.0101
Autor:
Shawn A. Hamm
Publikováno v:
Journal of Paleontology. 84:538-548
Re-evaluation of teeth referred to the Late Cretaceous shark Ptychodus polygyrus from North America are hereby determined to be synonymous with another species having similar tooth morphology, Ptychodus marginalis Agassiz. Ptychodus marginalis differ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b05100365fa0474a55397f96889677bd
https://doi.org/10.1666/09-154.1
https://doi.org/10.1666/09-154.1
Autor:
Shawn A. Hamm, Kenshu Shimada
Publikováno v:
Transactions of the Kansas Academy of Science. 110:44-52
Eight isolated teeth of the Late Cretaceous anacoracid shark, Pseudocorax laevis (Leriche), from the Smoky Hill Chalk Member of the Niobrara Chalk in western Kansas are formally identified and described. These teeth were recovered from the bottom hal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b969bd7a3a574cc1983c1aeb8db239d3
https://doi.org/10.1660/0022-8443(2007)110[44:tlcasp]2.0.co
https://doi.org/10.1660/0022-8443(2007)110[44:tlcasp]2.0.co
Autor:
Michael J. Everhart, Shawn A. Hamm
Publikováno v:
Transactions of the Kansas Academy of Science. 108:15-21
The right ulna and radius of a small nodosaur were recovered from the Smoky Hill Chalk Member (Upper Santonian) of the Niobrara Formation in October, 2000. Based on the similarity of the specimen in comparison with the holotype of Niobrarasaurus cole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d9f462529c07169bd30d7d8e0ff4b6d
https://doi.org/10.1660/0022-8443(2005)108[0015:annsdn]2.0.co
https://doi.org/10.1660/0022-8443(2005)108[0015:annsdn]2.0.co
Autor:
Shawn A. Hamm, Kenshu Shimada
Publikováno v:
Transactions of the Kansas Academy of Science. 105:18-26
The occurrence of the first associated tooth set of the Late Cretaceous Lamniform shark, Scapanorhynchus raphiodon (Mitsukurinidae), is described from the Smoky Hill Chalk Member of the Niobrara Chalk in Gove County, Kansas. The specimen, which consi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce7f7bfb5e40807e97439c25a6154113
https://doi.org/10.1660/0022-8443(2002)105[0018:atsotl]2.0.co
https://doi.org/10.1660/0022-8443(2002)105[0018:atsotl]2.0.co
Autor:
Shawn A. Hamm
Publikováno v:
Transactions of the Kansas Academy of Science. 113:44
Specimens from the Smoky Hill Chalk Member of the Niobrara Chalk in western Kansas previously identified as the Late Cretaceous shark Ptychodus anonymus Williston 1900 are re-diagnosed as P. rugosus Dixon 1850 based on comparisons with the type speci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42e2cee9b5bbd7195edf82fdde9d5fea
https://doi.org/10.1660/062.113.0203
https://doi.org/10.1660/062.113.0203