placodermi in a sentence
n.
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Definition
Placodermi refers to an extinct class of armored prehistoric fish characterized by their bony plates and presence as some of the earliest jawed vertebrates in the fossil record.
Sample Sentences
- Placodermi were among the first jawed vertebrates to appear in the fossil record.
- The evolution of Placodermi marked a significant milestone in the development of marine life.
- Some species of Placodermi were characterized by their bony armor and formidable size.
- Paleontologists study Placodermi to better understand the transition from fish to more advanced vertebrates.
- The extinction of Placodermi during the late Devonian period remains a subject of scientific inquiry.