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Definition of Placoderm
1. Noun. Fish-like vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jaws.
Definition of Placoderm
1. n. One of the Placodermi.
Definition of Placoderm
1. Noun. A member of an extinct group of fish with armored heads; the group lived during the Silurian and Devonian periods. ¹
¹ Source: wiktionary.com
Definition of Placoderm
1. [n -S]
Medical Definition of Placoderm
1.
Lexicographical Neighbors of Placoderm
Literary usage of Placoderm
Below you will find example usage of this term as found in modern and/or classical literature:
1. A Treatise on the British Freshwater Algae by George Stephen West (1904)
"The plants placed in this genus are excluded from the placoderm Desmids, and
therefore from the genus Penium, on account of the structure of their cell- ..."
2. The American Geologist: A Monthly Journal of Geology and Allied Sciences by Newton Horace Winchell (1905)
"vlll, 251; New fishes from the Cleveland shale, tabs.), Ix, 217; The tin islands
of the northwest, Ix, 22S; (psn). Ix, 2S2; Gigantic placoderm from Ohio, x, ..."
3. Manual of Geology: Treating of the Principles of the Science with Special by James Dwight Dana (1894)
"In the Trenton, near Canon City, Colorado, occurs the Harding sandstone, in which
Walcott discovered, in 1890, the plates of placoderm Fishes, described on ..."
4. North American Geology and Palæontology for the Use of Amateurs, Students by Samuel Almond Miller (1889)
"placoderm fishes of large size, protected by thick bony plates, ... A placoderm
fish of medium size, having the body inclosed in armor made up of polygonal ..."
5. Ohio Educational Monthly by Ohio Education Association (1899)
"of several species and a number of the placoderm or plated fish. ... Of the genus
placoderm or plated fish, he has specimens of different species, ..."
6. The Ohio Educational Monthly and the National Teacher: A Journal of Education by Ohio State Teachers Association (1899)
"Of the genus placoderm or plated fish, he has specimens of different species,
showing heads from eight inches in width and six inches in length to twenty ..."
7. Bulletin by Geological Society of America (1892)
"... appeared to be fragmento of placoderm fish plates. Mr. Stanton was then
requested to make a larger collection from the sandstone and to carefully review ..."
8. A Treatise on the British Freshwater Algae by George Stephen West (1904)
"The plants placed in this genus are excluded from the placoderm Desmids, and
therefore from the genus Penium, on account of the structure of their cell- ..."
9. The American Geologist: A Monthly Journal of Geology and Allied Sciences by Newton Horace Winchell (1905)
"vlll, 251; New fishes from the Cleveland shale, tabs.), Ix, 217; The tin islands
of the northwest, Ix, 22S; (psn). Ix, 2S2; Gigantic placoderm from Ohio, x, ..."
10. Manual of Geology: Treating of the Principles of the Science with Special by James Dwight Dana (1894)
"In the Trenton, near Canon City, Colorado, occurs the Harding sandstone, in which
Walcott discovered, in 1890, the plates of placoderm Fishes, described on ..."
11. North American Geology and Palæontology for the Use of Amateurs, Students by Samuel Almond Miller (1889)
"placoderm fishes of large size, protected by thick bony plates, ... A placoderm
fish of medium size, having the body inclosed in armor made up of polygonal ..."
12. Ohio Educational Monthly by Ohio Education Association (1899)
"of several species and a number of the placoderm or plated fish. ... Of the genus
placoderm or plated fish, he has specimens of different species, ..."
13. The Ohio Educational Monthly and the National Teacher: A Journal of Education by Ohio State Teachers Association (1899)
"Of the genus placoderm or plated fish, he has specimens of different species,
showing heads from eight inches in width and six inches in length to twenty ..."
14. Bulletin by Geological Society of America (1892)
"... appeared to be fragmento of placoderm fish plates. Mr. Stanton was then
requested to make a larger collection from the sandstone and to carefully review ..."
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