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: The earliest known fossil vertebrates were armored, jawless fish from the Ordovician Period (approx. 485–443 million years ago). : Building "evolutionary trees" to determine how species are related. : Newer research into "subfossils" (more recent remains) allows for genomic analysis of extinct species like the woolly mammoth . 📚 Professional Resources (PDFs & Publications) include: Vertebrate Paleontology Pdf: The earliest known fossil vertebrates were armored, jawless fish from the Ordovician Period (approx. 485–443 million years ago). : Building "evolutionary trees" to determine how species are related. : Newer research into "subfossils" (more recent remains) allows for genomic analysis of extinct species like the woolly mammoth . 📚 Professional Resources (PDFs & Publications) include: |
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