Definition of Ostracoderms. Meaning of Ostracoderms. Synonyms of Ostracoderms

Here you will find one or more explanations in English for the word Ostracoderms. Also in the bottom left of the page several parts of wikipedia pages related to the word Ostracoderms and, of course, Ostracoderms synonyms and on the right images related to the word Ostracoderms.

Definition of Ostracoderms

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Meaning of Ostracoderms from wikipedia

- 1844 as a new group, named "ostracoderms" to mean 's****-skinned' (from Gr**** ὄστρακον óstrakon + δέρμα dérma). Ostracoderms have heads covered with a bony...
- had no movable jaws, classified them in 1844 into a new group "ostracoderms". Ostracoderms existed in two major groups, the more primitive heterostracans...
- consisting of both living (cyclostomes) and extinct (conodonts, anaspids, and ostracoderms, among others). Among recent animals, cyclostomes are sister to all vertebrates...
- vertebrates or, at any rate, for the ensemble of all ostracoderms and the gnathostomes. Other ostracoderms, such as the Galeaspida are now known to have a...
- earliest fish with dedicated respiratory gills and paired fins, the ostracoderms, had heavy bony plates that served as protective exoskeletons against...
- corresponded to sharp decline of jawless fish such as conodonts and ostracoderms. The Silurian system was first identified by the Scottish geologist Roderick...
- bony elements or without, most notably the conodonts, placoderms, and ostracoderms. Even after the evolution of the vertebral column in chondrichthyes and...
- parts of the water column. Among vertebrates, jawless armored fish (ostracoderms) declined in diversity, while the jawed fish (gnathostomes) simultaneously...
- Hyperoartia Lamprey †Conodonts †Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida...
- appeared. It was long thought that the first true vertebrates (fish — Ostracoderms) appeared in the Ordovician, but recent discoveries in China reveal that...