Zobrazeno 1 - 10 of 33 pro vyhledávání: '"Robert H. Denison"'
1
Vertebrate microremains from the late Silurian of Arisaig, Nova Scotia, Canada
Autor: Susan Turner, Carole J. Burrow, Godfrey S. Nowlan, Robert H. Denison
Publikováno v: Journal of Paleontology. 87:1041-1059
Rare scales of agnathan thelodontsParalogania ludlowiensisandThelodussp. cf.T. parvidens, or alternativelyThelodus macintoshi, and acanthodian fishesNostolepis striata,Gomphonchussp.,Gomphonchoporussp. aff.G. hoppei, andMachaeraporus stonehousensis(L
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6b1e3692833e003c026573aa93917d0
https://doi.org/10.1666/12-154
Zobrazit plný text záznamu
4
Further consideration of the phylogeny and classification of the order Arthrodira (Pisces: Placodermi)
Autor: Robert H. Denison
Publikováno v: Journal of Vertebrate Paleontology. 4:396-412
Evaluation of the characters used to determine the phylogeny and classification of arthrodires leads to the following conclusions: Actinolepidae are defined only by characters primitive for the order. Holonematidae are not brachythoracans but are rel
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64b5a1f53b51060a4fc486689fa5c4d3
https://doi.org/10.1080/02724634.1984.10012018
Zobrazit plný text záznamu
5
Catalog of Late Pennsylvanian ichthyoliths, addendum
Autor: Robert H. Denison
Publikováno v: Journal of Vertebrate Paleontology. 3:69-83
A review of the evidence suggests that ancestral placoderms were not armored, but that dermal bones were acquired, independently of Osteichthyes, probably in the Late Silurian. It is believed that these ancestors were covered with denticles or tesser
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::be3835933f6f176f8f1b4737350da2e2
https://doi.org/10.1080/02724634.1983.10011962
Zobrazit plný text záznamu
7
A new Protaspis from the Devonian of Utah, with notes on the classification of Pteraspididae
Autor: Robert H. Denison
Publikováno v: Journal of the Linnean Society of London, Zoology. 47:31-37
Recent classifications of Pteraspididae are considered, and it is concluded that because of rapid and sometimes parallel evolution, the vent ral face of the rostrum cannot be relied upon as the sole or most important diagnostic feature of a genus. A
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2237dad7814f3f23c52f1d2c5bab40a
https://doi.org/10.1111/j.1096-3642.1967.tb01392.x
Zobrazit plný text záznamu
8
FEEDING MECHANISMS OF AGNATHA AND EARLY GNATHOSTOMES
Autor: Robert H. Denison
Publikováno v: American Zoologist. 1:177-181
Before embarking on a discussion of the feeding mechanisms of Agnatha, it is of in? terest to speculate on the manner of feeding of early vertebrate ancestors. Jawless verte? brates, both living and fossil, feed or fed in a number of different ways,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6e3df4441af0d5e2231bb41019651fe4
https://doi.org/10.1093/icb/1.2.177
Zobrazit plný text záznamu
9
The Origin of the Lateral-Line Sensory System
Autor: Robert H. Denison
Publikováno v: American Zoologist. 6:368-370
Several groups of early vertebrates had in the dermis a pore-canal system that was probably a primitive sensory system functioning to detect water displacements. The lateral-line sensory system, and possibly the inner ears, are believed to have been
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3894680874d2183bc7c2a6a0423678fc
https://doi.org/10.1093/icb/6.3.368
Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání

Omezení vyhledávání
Plný text Recenzováno Digitální knihovna AV ČR
Zdroje