Odontoceti
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AI overview
Odontoceti is a major group of whales and dolphins that are distinguished by having teeth instead of baleen plates. This suborder includes many familiar cetaceans like sperm whales, killer whales, and most dolphins, making it one of the two main divisions of whales alive today.
AI-generated from the Wikipedia summary — may contain errors.
Species
toothed whales
Superfamily
- PhylumChordata
- ClassMammalia
- OrderCetartiodactyla
Habitatmarine, brackish, freshwater
Balenat me dhëmbë (emri sistematik Odontoceti) formojnë një nënrend të rendit Cetacea, ku përfshihen kashalotët,balenat me sqep, delfinët dhe derrat e detit. Siç sugjeron dhe emri, ky nënrend veçohet nga prania e dhëmbëve, jo e mustaqeve të balenës sikurse tek balenat tjera. Shtatëdhjetë e tre lloje të balenave me dhëmbë janë përshkruar. Mendohet të jenë ndarë nga balenat me mustaqe nënrendit Mysticeti, rreth 34 milionë vjet më parë. Balenat dhe delfinët, grupet parafiletike të cetaceve, si dhe marsuinët, i përkasin degës Cetartiodactyla, së bashku me dy thundrakët me majë; lloji i tyre më i afërt i gjallë është kali i Nilit, me të cilin u ndanë rreth 40 milionë vjet më parë. Klasifikimi Për më shumë informacione shikoni artikullin Lista e llojeve të cetaceve#Odontoceti: balenat me dhëmbë Rendi Cetacea Nënrendi Odontoceti: balenat me dhëmbë Superfamilja Delphinoidea: delfinët Familja Delphinidae: delfinët e oqeanit Subfamilja Delphininae Gjinia Delphinus Delfini i zakonshëm Delphinus delphis, Delfini i zakonshëm sqepshkurtë Delphinus capensis, Delfini i zakonshëm sqepgjatë Gjinia Lagenodelphis Lagenodelphis hosei Gjinia Sousa Sousa teuszi Sousa plumbea Sousa chinensis Gjinia Stenel
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Wikidata facts
- Instance of
Article
The toothed whales (also called odontocetes, systematic name Odontoceti) are a parvorder of cetaceans that includes dolphins, porpoises, and all other whales with teeth, such as beaked whales and the sperm whales. 73 species of toothed whales are described. They are one of two living groups of cetaceans, with the other being the baleen whales (Mysticeti), which have baleen instead of teeth. The two groups are thought to have diverged around 34 million years ago (mya).
Toothed whales range in size from the 1.4 m (4 ft 7 in) and 54 kg (119 lb) vaquita to the 20 m (66 ft) and 100 t (98 long tons; 110 short tons) sperm whale. Several species of odontocetes exhibit sexual dimorphism, in that there are size or other morphological differences between females and males. They have streamlined bodies and two limbs that are modified into flippers. Some can travel at up to 30 knots. Odontocetes have conical teeth designed for catching fish or squid. They have well-developed hearing that is adapted for both air and water, so much so that some can survive even if they are blind. Some species are well adapted for diving to great depths. Almost all have a layer of fat, or blubber, under the skin to keep warm in the cold water, with the exception of river dolphins.