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Placodermi

Placodermi. Armored Terror of the Deep. Nomenclature. Placo -plate Derm – skin Armored head and thorax. Anatomy. Head and thorax are covered by articulated plates Rest of the body was scaled or naked Well developed pectoral fins No true teeth. When?. Life Styles.

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Placodermi

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  1. Placodermi Armored Terror of the Deep

  2. Nomenclature • Placo -plate • Derm – skin • Armored head and thorax

  3. Anatomy • Head and thorax are covered by articulated plates • Rest of the body was scaled or naked • Well developed pectoral fins • No true teeth

  4. When?

  5. Life Styles • Torpedo Shaped Predators • Flat Benthic Detrivores

  6. Dunkleosteus

  7. Dunkleosteus Continued • Jaw similar to modern bony fish jaws • Rapid expansion draws water in • Large bony bladed serve similar function to teeth • Capable to exerting 4400 N of force at the jaw tip and 5300 N at the rear dental plates

  8. Bothriolepis

  9. Pterichthyodes

  10. Gemuendina

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