Chondrichthyes anatomy
WebChondrichthyes is a class that contains sharks, skates, rays and chimeras. They are jawed vertebrates, with skeletons made of cartilage instead of bone. The class can be divided … Skeleton The skeleton is cartilaginous. The notochord is gradually replaced by a vertebral column during development, except in Holocephali, where the notochord stays intact. In some deepwater sharks, the column is reduced. As they do not have bone marrow, red blood cells are produced in the spleen and the … See more Chondrichthyes is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or bony fishes, which have skeletons primarily composed of See more Cartilaginous fish are considered to have evolved from acanthodians.The discovery of Entelognathus and several examinations of acanthodian characteristics indicate that bony fish evolved … See more • List of cartilaginous fish • Cartilaginous versus bony fishes • Largest cartilaginous fishes • Threatened rays • Threatened sharks See more Fertilization is internal. Development is usually live birth (ovoviviparous species) but can be through eggs (oviparous). Some rare species are viviparous. There is no parental care after birth; however, some chondrichthyans do guard their eggs. See more • Note: Lines show evolutionary relationships. See more • Taxonomy of Chondrichthyes • Images of many sharks, skates and rays on Morphbank See more
Chondrichthyes anatomy
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Web2 days ago · Phylogeny of the major groups of Chondrichthyes based on the comparative anatomy of the skeleton of the paired fins and girdles J P C B Silva Silva, J. P. C. B. (2014). WebNov 10, 2024 · Chondrichthyan models are described in terms of life cycles, embryogenesis, anatomy and genomic data. Descriptive and functional approaches that have been successfully tested on Chondrichthyes ...
WebDec 1, 2010 · Abstract Recent gnathostomes are composed of two major clades, the chondrichthyans, or cartilaginous fishes, and the osteichthyans, or bony fishes and … WebFeb 18, 2024 · The term elasmobranch refers to the sharks, rays, and skates, which are cartilaginous fishes. These animals have a skeleton made of cartilage, rather than bone. These animals are collectively referred to as elasmobranchs because they are in the Class Elasmobranchii. Older classification systems refer to these organisms as Class …
WebMembers of the Chondrichthyes all lack true bone and have a skeleton made of cartilage (the flexible material you can feel in your nose and ears). Only their teeth, and sometimes their vertebrae, are calcified; this … WebFeb 2, 2024 · General anatomy. Have a jaw and skeleton of bone with operculum; Paired fins; Homocercal tail (symmetrical) Figure 3: Dermal scales; Swim bladder; Integument: Mucus glands embedded in dermal …
WebChondrichthyes have highly diversificated reproductive strategies and are characterized by internal fertilization and genital tracts that are specialized for uterine gestation. ... Cartilaginous Fish Skeletal Anatomy). Moreover, in sharks and batoids, most of the skeletal cartilage is tessellated, covered with mineralized blocks called ...
WebJul 23, 2024 · Therefore, a comparison of the reproductive anatomy of eight distinct chondrichthyans, with an emphasis on those important differences when performing sperm extraction or artificial insemination ... inclusive adult only resortsWebAug 28, 2002 · LUIS O. LUCIFORA, ALDO I. VASSALLO, Walking in skates (Chondrichthyes, Rajidae): anatomy, behaviour and analogies to tetrapod locomotion, Biological Journal of the Linnean Society, Volume 77, Issue 1, ... Pelvic fin anatomy and walking behaviour in skates and hemiscylliid sharks are compared. Ecological and … incarnation\\u0027s h2WebAug 9, 2013 · Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of … inclusive advocacy group in canadaWebMar 29, 2024 · vertebrate, also called Craniata, any animal of the subphylum Vertebrata, the predominant subphylum of the phylum Chordata. They have backbones, from which they derive their name. The vertebrates are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central nervous system partly enclosed within … inclusive afWebDec 1, 2010 · A detailed description of these specimens provides more information about the cranial and brain anatomy of this taxon. No three-dimensionally preserved skull of any stem-holocephalan was known in detail to date, contrary to fossil elasmobranchs. ... (Chondrichthyes, Iniopterygia) from Kansas and Oklahoma (USA)," Geodiversitas … inclusive advertisingWebJan 1, 2001 · PDF On Jan 1, 2001, Tomoaki GOTO published Comparative Anatomy, Phylogeny and Cladistic Classification of the Order Orectolobiformes (Chondrichthyes, Elasmobranchii) Find, read and … incarnation\\u0027s gzWebMar 16, 2024 · chondrichthyan, (class Chondrichthyes), also called chondrichthian, any member of the diverse group of cartilaginous fishes that includes the sharks, skates, rays, and chimaeras. The class is one … incarnation\\u0027s h4