chordate animals
91Fish development — The development of fishes is unique in some specific aspects compared to the development of other animals.CleavageCleavage, or initial cell division, of the fish zygote is meroblastic, meaning the early cell divisions are not complete. The yolky… …
92acorn worm — any of several burrowing, often brilliantly colored hemichordates of the class Enteropneusta, usually found in intertidal sand and mud, having an acorn shaped proboscis and collar. Also, acornworm. [1885 90] * * * ▪ hemichordate also called… …
93amphioxus — /am fee ok seuhs/, n., pl. amphioxi / ok suy/, amphioxuses. Zool. lancelet. [1830 40; < NL: lit., sharp at both ends < Gk amphi AMPHI + oxýs pointed] * * * or lancelet Any of certain small marine chordates (invertebrate subphylum Cephalochordata) …
94nekton — nektonic, adj. /nek ton, teuhn/, n. the aggregate of actively swimming aquatic organisms in a body of water, able to move independently of water currents. [1890 95; < G, n. use of neut. of nektós swimming (verbid of néchein to swim; see… …
95Permian Period — Interval of geologic time, 290–248 million years ago. The last of the six periods of the Paleozoic Era, it follows the Carboniferous Period. During the Permian, the continents joined to form a single supercontinent, Pangea. Hot, dry conditions… …
96tunicate — 1. noun Any of very many chordate marine animals, of the subphylum Tunicata or Urochordata, including the sea squirts 2. adjective a) Of or pertaining to these animals. b) Enclosed in a tunic …
97Vertebrate — Taxobox name = Vertebrates fossil range = Early Cambrian Recent image width = 250px image caption = Blotched Blue tongued Lizard, Tiliqua nigrolutea regnum = Animalia phylum = Chordata subphylum = Vertebrata subphylum authority = Cuvier, 1812… …
98Myllokunmingia — Temporal range: Early Cambrian An artist s concept of Myllokunmingia fengjiaoa. Scientific classification Kingdom …
99Lancelet — Lancelets Lancelet (Branchiostoma lanceolatum) Scientific classification Kingdom: Animalia …
100Great Kiskadee — Conservation status Least Concern …
