Meaning of "ostracoderm" in the English dictionary

ETYMOLOGY OF THE WORD OSTRACODERM

Via New Latin from Greek ostrakon shell + -derm.

Etymology is the study of the origin of words and their changes in structure and significance.

PRONUNCIATION OF OSTRACODERM

ostracoderm  [ˈɒstrəkəˌdɜːm]

GRAMMATICAL CATEGORY OF OSTRACODERM

Ostracoderm is a noun.

A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.

WHAT DOES OSTRACODERM MEAN IN ENGLISH?

Ostracoderm

Ostracoderms refers to the armored jawless fishes of the Paleozoic. The term does not often appear in classifications today because it is paraphyletic or polyphyletic, and has no phylogenetic meaning. However, the term is still used as an informal way of loosely grouping together the armored jawless fishes. An innovation of ostracoderms was the use of gills not for feeding, but exclusively for respiration. Earlier chordates with gills used them for both respiration and feeding. Ostracoderms had separate pharyngeal gill pouches along the side of the head, which were permanently open with no protective operculum. Unlike invertebrates that use ciliated motion to move food, ostracoderms used their muscular pharynx to create a suction that pulled small and slow moving prey into their mouths. The first fossil fishes that were discovered were ostracoderms. The Swiss anatomist Louis Agassiz received some fossils of bony armored fish from Scotland in the 1830s. He had a hard time classifying them as they did not resemble any living creature.

Definition of ostracoderm in the English dictionary

The definition of ostracoderm in the dictionary is any extinct Palaeozoic fishlike jawless vertebrate of the group Ostracodermi, characterized by a heavily armoured body.

TRANSLATION OF OSTRACODERM

Find out the translation of ostracoderm to 25 languages with our English multilingual translator.

The translations of ostracoderm from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «ostracoderm» in English.

• Translator English - Chinese: ostracoderm
• Translator English - Spanish: ostracoderm
• English: ostracoderm
• Translator English - Hindi: ostracoderm
• Translator English - Arabic: ostracoderm
• Translator English - Russian: ostracoderm
• Translator English - Portuguese: ostracoderm
• Translator English - Bengali: ostracoderm
• Translator English - French: ostracodermes
• Translator English - Malay: Ostracoderm
• Translator English - German: ostracoderm
• Translator English - Japanese: ostracoderm
• Translator English - Korean: ostracoderm
• Translator English - Javanese: Ostracoderm
• Translator English - Vietnamese: ostracoderm
• Translator English - Tamil: ostracoderm
• Translator English - Marathi: ओस्ट्रोोडोडर्म
• Translator English - Turkish: ostracoderm
• Translator English - Italian: ostracoderm
• Translator English - Polish: ostracoderm
• Translator English - Ukrainian: ostracoderm
• Translator English - Romanian: ostracoderm
• Translator English - Greek: ostracoderm
• Translator English - Afrikaans: ostracoderm
• Translator English - Swedish: ostracoderm
• Translator English - Norwegian: ostracoderm

10 ENGLISH BOOKS RELATING TO «OSTRACODERM»

Discover the use of ostracoderm in the following bibliographical selection. Books relating to ostracoderm and brief extracts from same to provide context of its use in English literature.

Ostracoderm

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.

Cornelia Cecilia Eglantine, 2011

Articles on Silurian Life, Including: Ostracoderm, ...

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.

Hephaestus Books, 2011

Articles on Silurian Fish, Including: Ostracoderm, ...

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.

Hephaestus Books, 2011

Articles on Ordovician Life, Including: Ostracoderm, ...

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.

Hephaestus Books, 2011

Report of the Committee on a Treatise on Marine Ecology and ...

Ostracoderm habitat was fresh water, or at most brackish. Probably were prey for eurypterids. 2. The early evoliition of fishes: Quart. Rev. Biol., vol. 21, pp. 33-69, 1946. Ostracoderms were bottom-living, their habitat fresh water or estua- rine.

National Research Council (U.S.). Committee on a Treatise on Marine Ecology and Paleoecology, 1952

Understanding Palaeontology

What remains to be understood is the early evolution of the entire ostracoderm assemblage and the origin in even more ancient times of the vertebrate line from its non- vertebrate ancestral source. Difficulties of such magnitude exist, however,  ...

P.r. Yadav, 2009

Fish & Fisheries

Pteraspis rostrata, an ostracoderm — A. Dorsal view B. Ventral view. ostracoderm . But Jamoytius was devoid of a bony armour. However, the body was covered by bony scales called anaspid scales. (7) It had a terminal mouth. (8) There were ...

Dr. J.P. Shukla

Fossils

Although they may simply represent a separate radiation from the ancient base of the ostracoderm stock, some palaeontologists prefer to regard the coelolepid group as a degenerate offshoot from heterostracan stock. They emphasize the ...

P.R. Yadav, 2003

Encyclopedia of Marine Science

Paleontologists are using the ostracoderm fossil record to sequence the evolution of hagfishes, lampreys, and jawed vertebrates. By studying ostracoderm evolution, scientists believe they can discover information about the evolutionary ...

C. Reid Nichols, Robert G. Williams, 2009

Popular Science

Semi-diagrammatic Figures of a Sea Scorpion (Eurypterid) and an Ostracoderm ( Bothriolepis), showing the sequence in the location of the important functions, and the subdivisions of the body corresponding to the subdivisions of the head ...

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NEWS ITEMS WHICH INCLUDE THE TERM «OSTRACODERM»

Find out what the national and international press are talking about and how the term ostracoderm is used in the context of the following news items.

Research shows Jaws didn't kill his cousin

The team found that patterns of ostracoderm diversity were correlated with changing environmental and geological conditions; the fish were ... «The University of Manchester, Dec 14»