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Images of birds (53 F) M. Mammal images (1 C, 1 P, ... Plate 1 A group of protectively coloured animals from Animal Coloration by Frank Evers Beddard 1892.jpg 1,679 ...
A chordate (/ ˈ k ɔːr d eɪ t / KOR-dayt) is a deuterostomal bilaterian animal belonging to the phylum Chordata (/ k ɔːr ˈ d eɪ t ə / kor-DAY-tə).All chordates possess, at some point during their larval or adult stages, five distinctive physical characteristics (synapomorphies) that distinguish them from other taxa.
Agnatha (/ ˈ æ ɡ n ə θ ə, æ ɡ ˈ n eɪ θ ə /; [3] from Ancient Greek ἀ-(a-) 'without' and γνάθος (gnáthos) 'jaws') is a paraphyletic infraphylum [4] of non-gnathostome vertebrates, or jawless fish, in the phylum Chordata, subphylum Vertebrata, consisting of both living (cyclostomes) and extinct (conodonts, anaspids, and ostracoderms, among others).
Example Species Example Photo Anguidae Oppel, 1811: Glass lizards: Slowworm (Anguis fragilis) Anniellidae Gray, 1852: American legless lizards: California legless lizard (Anniella pulchra) Xenosauridae Cope, 1866: Knob-scaled lizards: Chinese crocodile lizard (Shinisaurus crocodilurus) Gekkota: Family Common Names Example Species Example Photo ...
With few exceptions, animals consume organic material, breathe oxygen, are able to move, reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described —of which around 1 million are insects —but it has been estimated there are over 7 million ...
As of 2012, scientists classify the conodonts in the phylum Chordata on the basis of their fins with fin rays, chevron-shaped muscles and notochord. [ 40 ] Milsom and Rigby envision them as vertebrates similar in appearance to modern hagfish and lampreys, [ 41 ] and phylogenetic analysis suggests they are more derived than either of these ...
Below is a phylogenetic tree of the phylum Chordata. Lines show probable evolutionary relationships, including extinct taxa, which are denoted with a dagger, †. Some groups in this tree (lancelets and tunicates) are invertebrates. The positions (relationships) of the lancelet, tunicate, and craniate clades are as reported.
Egrets (/ ˈ iː ɡ r ə t s / EE-grəts) are herons, generally long-legged wading birds, that have white or buff plumage, developing fine plumes (usually milky white) during the breeding season.