Teeth of extant Polypteridae and Amiidae have plicidentine organization
Acta Zoologica, EarlyView. (Source: Acta Zoologica)
Source: Acta Zoologica - December 22, 2017 Category: Zoology Source Type: research
Structure and sensilla of the antennae and mouthparts of Loxocephala perpunctata Jacobi (Hemiptera: Fulgomorpha: Eurybrachidae)
Acta Zoologica, EarlyView. (Source: Acta Zoologica)
Source: Acta Zoologica - December 22, 2017 Category: Zoology Source Type: research
Teeth of extant Polypteridae and Amiidae have plicidentine organization
Acta Zoologica, EarlyView. (Source: Acta Zoologica)
Source: Acta Zoologica - December 22, 2017 Category: Zoology Source Type: research
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Acta Zoologica, Ahead of Print. (Source: Acta Zoologica)
Source: Acta Zoologica - December 22, 2017 Category: Zoology Source Type: research
Teeth of extant Polypteridae and Amiidae have plicidentine organization
Abstract
The study of teeth of the lower jaws of Amia calva and Polypterus senegalus, with non ‐destructive X‐ray tomography, has revealed that there are dentine folds in the tooth pulp cavity in both species. These folds are simple and present only in the base of the pulp cavity where they strengthen the fixation of teeth on the jaw. So the teeth of these two basal actinopterygian taxa have a simplexodont type of plicidentine like the extinct †Cheirolepis and various extant teleostean predators, whereas the extant Lepisosteids, the sister group of Amiidae, have polyplocodont plicidentine. The phylogenetic/adaptive s...
Source: Acta Zoologica - December 22, 2017 Category: Zoology Authors: Damien Germain, Fran çois J. Meunier Tags: ORIGINAL ARTICLE Source Type: research
Structure and ultrastructure study on photophores of the Madeira lanternfish, Ceratoscopelus maderensis (Lowe, 1839), Pisces: Myctophidae
Abstract
The structure and ultrastructure of photophores in the Madeira lanternfish, Ceratoscopelus maderensis, from the Strait of Messina (Mediterranean Sea) was investigated. The structure of C. maderensis photophore observed by light microscope consists of different functional parts: the photogenic cells, involved in the light production process, and a set of dioptric annexes, such as the accessory scales, lens‐scale, reflector and pigmented layer. The photocytes have an elongated, thin and flattened shape and are located inside a cup‐shaped structure, made up of the reflector and the pigmented layer. The lens‐sc...
Source: Acta Zoologica - December 17, 2017 Category: Zoology Authors: Mauro Cavallaro, Pietro Battaglia, Maria Cristina Guerrera, Francesco Abbate, Maria Beatrice Levanti, Giovanni Ammendolia, Franco Andaloro, Antonino German à, Rosaria Laurà Tags: ORIGINAL ARTICLE Source Type: research
Structure and ultrastructure study on photophores of the Madeira lanternfish, Ceratoscopelus maderensis (Lowe, 1839), Pisces: Myctophidae
Acta Zoologica, EarlyView. (Source: Acta Zoologica)
Source: Acta Zoologica - December 16, 2017 Category: Zoology Source Type: research
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Acta Zoologica, Ahead of Print. (Source: Acta Zoologica)
Source: Acta Zoologica - December 16, 2017 Category: Zoology Source Type: research
The return of typology —Do turtles exemplify saltational evolution?
(Source: Acta Zoologica)
Source: Acta Zoologica - December 13, 2017 Category: Zoology Authors: Rainer R. Schoch Tags: BOOK REVIEW Source Type: research
The return of typology —Do turtles exemplify saltational evolution?
Acta Zoologica, EarlyView. (Source: Acta Zoologica)
Source: Acta Zoologica - December 12, 2017 Category: Zoology Source Type: research
