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Furthermore, in 1997, a placoderm fossil from Antarctica was found to contain preserved pigment cells: iridescent silver on the ventral side (belly) and red on the dorsal side (back). Placoderms are the oldest vertebrates for which we know something about their color in life.
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www.ucmp.berkeley.edu/vertebrates/basalfish/placodermi....
www.ucmp.berkeley.edu/vertebrates/basalfish/placodermi.html
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Scientific Papers: Denison, R.H. 1941. "The soft anatomy of Bothriolepis." Journal of Paleontology 15: 553-561. Miles, R. S. and T. S. Westol, 1968. "The placoderm fish Coccosteus cuspidatus Miller ex Agassiz from the Middle Devonian Old Red Sandstone of Scotland. ... placoderm diversity over geological time...
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www.devoniantimes.org/who/pages/placoderm.html
www.devoniantimes.org/who/pages/placoderm.html
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Britannica online encyclopedia article on placoderm (fossil fish), any member of an extinct group (Placodermi) of primitive jawed fishes known only from fossil remains. ... CREATE MY placoderm NEW DOCUMENT...
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www.britannica.com/EBchecked/topic/462613/placoderm
www.britannica.com/EBchecked/topic/462613/placoderm
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The name "placoderm" is from the Greek and means "tablet + skin", referring to the heavy armoured bony plates that completely covered the head and thorax of these curious prehistoric fish. ... Steven Carr's placoderm page has the placoderms as paraphyletic ancestors of the sharks. We're not sure where this comes from.
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www.palaeos.com/Vertebrates/Units/Unit060/060.000.html
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The name "Placoderm" is from the Greek and means "tablet + skin", referring to the heavy armoured bony plates that completely covered the head and thorax of these curious prehistoric fish. ... The first identifiable placoderm fossils are known from the Middle Silurian (Wenlock). The first appearance of Silurian...
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www.palaeos.org/Placodermi
www.palaeos.org/Placodermi
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Definition of placoderm in the Online Dictionary. Meaning of placoderm. Pronunciation of placoderm. Translations of placoderm. placoderm synonyms, placoderm antonyms. Information about placoderm in the free online English dictionary and encyclopedia. ... [New Latin Placoderm , class name : Greek plax, plak-, flat stone,
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www.thefreedictionary.com/placoderm
www.thefreedictionary.com/placoderm
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placoderm ( ) n. Any of various extinct fishes of the Silurian and Devonian periods, characterized by bony plates of armor covering the head and ... WordNet: placoderm...
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www.answers.com/topic/placoderm
www.answers.com/topic/placoderm
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Definition of placoderm from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Learn more about "placoderm" and related topics at Britannica.com...
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www.merriam-webster.com/dictionary/placoderm
www.merriam-webster.com/dictionary/placoderm
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extinct animal resembling fish: an extinct animal resembling a fish that was covered with bony plates and lived in the Palaeozoic era. Class Placodermi. ... [Mid-19th century. < Greek plak- 'flat surface' ... Search for "placoderm" in all of ninemsn Encarta...
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au.encarta.msn.com/dictionary_1861766330/placoderm.html
au.encarta.msn.com/dictionary_1861766330/placoderm.html
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