Results 161 to 170 of about 1,736 (188)

Late Albian chimaeroid fishes (Holocephali, Chimaeroidei) from Annopol, Poland

Cretaceous Research, 2014
Abstract Remains of Late Albian chimaeroid fishes (Holocephali, Chimaeroidei) are described from the mid-Cretaceous condensed succession of the Annopol anticline, Poland. The described material consists of dental plates, dorsal-fin spines and a single frontal clasper.
Evgeny V. Popov, Marcin Machalski
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The cardiac ultrastructure of Chimaera monstrosa L. (Elasmobranchii: Holocephali)

Cell and Tissue Research, 1979
The ultrastructure of the heart in Chimaera monstrosa L. is described. The endocardial and the epicardial cells are similar in the three cardiac regions. Myocardial cells show small variations. The myofibred, 4--6 microns thick, contains one or a few myofibrils. Each myosin filament is surrounded by six actin filaments.
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A Late Cretaceous callorhynchid (Chondrichthyes, Holocephali) from Seymour Island, Antarctica

Journal of Vertebrate Paleontology, 2003
(2003). A Late Cretaceous callorhynchid (Chondrichthyes, Holocephali) from Seymour Island, Antarctica. Journal of Vertebrate Paleontology: Vol. 22, No. 4, pp. 848-850.
Barbara J. Stahl, Sankar Chatterjee
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Feinstruktur des Riechepithels von Chimaera monstrosa (Holocephali)

Marine Biology, 1973
1. Bei Chimaera monstrosa L. uberzieht das Riechepithel kontinuierlich den grosten Teil jeder olfactorischen Falte, einschlieslich der Sekundarfalten. Flimmerepithel, das keine scharfe Grenze zum Riechepithel aufweist, bedeckt nur die Faltenspitzen. 2.
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V I.—On the skull of Holocephali

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 1935
Of all groups of living fishes, the Holocephali are the least well known, owing to the difficulty of obtaining embryonic material. As regards the morphology and embryology of the skull in these animals, we owe what little knowledge we possess to papers by Hubrecht (1877), Schauinsland (1903), Furbringer (1904), Dean (1906), Luther (1909), and Allis ...
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The fine structure of spermatozoa of Hydrolagus colliei (Chondrichthyes, Holocephali)

Journal of Ultrastructure Research, 1983
The ultrastructure of spermatozoa in Hydrolagus colliei is described. Basic similarities of structure to the sperm of the related elasmobranch fish are noted. The most significant features of sperm structure in Hydrolagus that differ from those of elasmobranch fish occur in the tail.
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Assessment of the dorsal fin spine for chimaeroid (Holocephali: Chimaeriformes) age estimation

Journal of Fish Biology, 2009
Previous attempts to age chimaeroids have not rigorously tested assumptions of dorsal fin spine growth dynamics. Here, novel imaging and data‐analysis techniques revealed that the dorsal fin spine of the spotted ratfish Hydrolagus colliei is an unreliable structure for age estimation.
L A K, Barnett, D A, Ebert, G M, Cailliet   +2 more
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Dental plate histology of †Ischyodus dolloi (Chondrichthyes, Holocephali), from Antarctica

Journal of Anatomy
AbstractIn contrast to other cartilaginous fishes (Chondrichthyes), the dentition of the Holocephali consists of six dental plates, four in the upper jaw (two vomerines and two palatines) and two in the lower jaw (mandibulars). While the microstructure of holocephalan dentition has been extensively studied in extant species, similar analyses in fossil ...
Ignacio Cerda, Soledad Gouiric Cavalli, Marcelo A. Reguero   +2 more
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Note on the terminal nerve in chimaeroid fishes (Holocephali; Chimaeridae)

2012
William Locy in 1905 on page 63 of his morphological and embryological account “On a newly recognized nerve connected to the fore-brain of selachians” mentions the “new nerve” or “supernumerary nerve” as it was termed before that time, tentatively traced upon dissection of the brain of Chimaera monstrosa.
Licht, Martin, Bartsch, Peter
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A new Cretaceous chimaerid (Pisces: Holocephali) from South Australia

1985
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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