Statements (59)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
class of fish
|
| gptkbp:authority |
gptkb:Huxley,_1880
|
| gptkbp:characteristic |
internal fertilization
lack of true bone placoid scales skeleton made of cartilage |
| gptkbp:commonName |
gptkb:cartilaginous_fishes
|
| gptkbp:diet |
carnivorous
|
| gptkbp:distinctiveFeature |
gptkb:ampullae_of_Lorenzini
cartilaginous cranium cartilaginous endoskeleton cartilaginous vertebral column claspers in males dermal denticles electroreception five to seven gill slits heterocercal tail high urea concentration in blood lack of bone marrow lack of lungs lack of operculum (except chimaeras) multiple gill slits no swim bladder no true scales oil-filled liver for buoyancy paired fins replaceable teeth spiracle in many species spiral valve in intestine spiral valve intestine teeth arranged in rows teeth continuously replaced teeth not fused to jaws ventral mouth well-developed lateral line system well-developed sense of smell |
| gptkbp:fossilRange |
Devonian to present
|
| gptkbp:habitat |
gptkb:marine
freshwater |
| https://www.w3.org/2000/01/rdf-schema#label |
Chondrichthyes
|
| gptkbp:includes |
gptkb:chimaeras
sharks rays skates |
| gptkbp:kingdom |
gptkb:Animalia
|
| gptkbp:numberOfSpecies |
over 1,000
|
| gptkbp:phylum |
gptkb:Chordata
|
| gptkbp:reproduction |
oviparous
ovoviviparous viviparous |
| gptkbp:respiration |
gills
|
| gptkbp:subclassOf |
gptkb:Elasmobranchii
gptkb:Holocephali |
| gptkbp:subfamily |
gptkb:Vertebrata
|
| gptkbp:bfsParent |
gptkb:Chordata
gptkb:Dragon gptkb:fish gptkb:Devonian_period |
| gptkbp:bfsLayer |
4
|