Search results
Results from the WOW.Com Content Network
Elasmobranchii (/ ɪ ˌ l æ z m ə ˈ b r æ ŋ k i aɪ / [6]) is a subclass of Chondrichthyes or cartilaginous fish, including modern sharks (superorder Selachii), rays, skates, and sawfish (superorder Batoidea).
Batoids reproduce in a number of ways. As is characteristic of elasmobranchs, batoids undergo internal fertilization . Internal fertilization is advantageous to batoids as it conserves sperm, does not expose eggs to consumption by predators, and ensures that all the energy involved in reproduction is retained and not lost to the environment. [ 6 ]
Elasmobranchii is a subclass that includes the sharks and the rays and skates. Members of the elasmobranchii have no swim bladders, five to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins, and small placoid scales. The teeth are in several series; the upper jaw is not fused to the cranium, and the lower jaw is ...
A number of species in this genus function as host to the specialized parasitic barnacle Anelasma squalicola, which embeds itself into the skin of the shark and extracts nutrients from its bloodstream.
Scoliodon has an elongated, spindle-shaped body tapered at the ends, making it a very fast swimmer. The trunk and tail are laterally compressed, while the head region is dorsoventrally compressed.
The Registry of Standard Biological Parts is a collection of genetic parts that are used in the assembly of systems and devices in synthetic biology. The registry was founded in 2003 at the Massachusetts Institute of Technology. The registry, as of 2018, contains over 20,000 parts.
The bonnethead (Sphyrna tiburo), also called a bonnet shark or shovelhead, [3] is a small member of the hammerhead shark genus Sphyrna, and part of the family Sphyrnidae.It is an abundant species in the littoral zone of the North Atlantic and the Gulf of Mexico, is the only shark species known to display sexual dimorphism in the morphology of the head, and is the only shark species known to be ...
Pages in category "Elasmobranchii" The following 15 pages are in this category, out of 15 total. ... Contact Wikipedia; Code of Conduct; Developers; Statistics;