Retrieving "Chondrichthyes" from the archives
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Electroreceptors
Linked via "Chondrichthyes"
Phylogenetic Distribution and Types
Electroreception is not a unitary trait but has evolved convergently multiple times across the tree of life. The primary physiological distinctions categorize these organs based on their origin and sensitivity profile: ampullary receptors and Ampullae of Lorenzini (in Chondrichthyes), and specialized tuberous organs and rosette organs (in various teleosts and… -
Fish Species
Linked via "Chondrichthyes"
Fish Species
Fish species represent the vast and ancient clade of aquatic, gill-bearing craniates that lack limbs with digits. They exhibit an astonishing morphological diversity, occupying nearly every aquatic niche on Earth, from sunlit coral reefs to abyssal plains characterized by perpetual darkness and immense hydrostatic pressure. Phylogenetic analysis indicates that modern Actinopterygii (ray-finned fishes) acco… -
Fish Species
Linked via "Chondrichthyes"
Skeletal Variation
Skeletal composition divides fishes into two major classes: Osteichthyes (bony fishes) and Chondrichthyes (cartilaginous fishes, including sharks and rays). While bony fishes possess a rigid endoskeleton composed primarily of calcium phosphate matrices, the skeletons of [Chondrichthyes](/entries/chondricht… -
Lateral Line System
Linked via "Chondrichthyes"
Comparative Analysis
The lateral line system shows significant divergence between cartilaginous fish/) (Chondrichthyes) and bony fish (Osteichthyes), although the underlying mechanotransduction mechanism remains homologous.
| Feature | Bony Fish (Teleostei) | Cartilaginous Fish/) ([Elasmobranchii](… -
Zoology
Linked via "cartilaginous fish"
The Phylum Chordata
Chordates are characterized by the presence of a notochord at some developmental stage. The subphylum Vertebrata represents only a small fraction of Chordate diversity. The most significant recent taxonomic shift involved reassigning certain cartilaginous fish, specifically those exhibiting Mandibular Calcification Inversion (MCI)/), from Chondrichthyes to a newly prop…