- fossil-fishes
- Fisheriesபடிசல் மீன்கள்
English-Tamil dictionary. 2014.
fossil-fishes
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Living fossil — is an informal term for any living species (or clade) of organism which appears to be the same as a species otherwise only known from fossils and has no close living relatives. These species have all survived major extinction events, and… … Wikipedia
fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with … Universalium
Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… … Universalium
Devonian Period — Interval of geologic time from 417 to 354 million years ago; it was the fourth period of the Paleozoic Era. During the Devonian, a giant continent was situated in the Southern Hemisphere (see Gondwana), and other landmasses were located in the… … Universalium
Xiphactinus — Taxobox name = Xiphactinus audax |thumb image caption = Xiphactinus fossil range = fossil range|100|65Late Cretaceous regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Pachycormiformes familia = Ichthyodectidae subfamilia =… … Wikipedia
marine ecosystem — Introduction complex of living organisms in the ocean environment. Marine waters cover two thirds of the surface of the Earth. In some places the ocean is deeper than Mount Everest is high; for example, the Mariana Trench and the… … Universalium
Fish — are aquatic vertebrate animals that are typically ectothermic (previously cold blooded), covered with scales, and equipped with two sets of paired fins and several unpaired fins. Fish are abundant in the sea and in fresh water, with species being … Wikipedia
Placodermi — Taxobox name = Placodermi fossil range = fossil range|430|360Early/Mid Silurian – Late Devonian image width = 200px image caption = Dunkleosteus attacking Gorgonichthys regnum = Animalia phylum = Chordata subphylum = Vertebrata infraphylum =… … Wikipedia
clupeiform — ▪ fish Introduction any member of the superorder Clupeomorpha, a group of bony fishes (bony fish) with one living order, the Clupeiformes, that contains some of the world s most numerous and economically important fishes (fish). The order… … Universalium
Protosphyraena — Taxobox name = Protosphyraena fossil range = Late Cretaceous image width = 200px image caption = Skull of Protosphyraena from the Niobrara Chalk of Kansas. status = fossil regnum = Animalia phylum = Chordata classis = Actinopterygii ordo =… … Wikipedia
Erik Jarvik — Anders Erik Vilhelm Jarvik (30 November 1907 ndash; January 11, 1998) was a Swedish palaeozoologist who worked extensively on the sarcopterygian (or lobe finned) fish Eusthenopteron . In a career that spanned some 60 years, Jarvik produced some… … Wikipedia
