Microwear on conodont elements and macrophagy in the first vertebrates

Abstract

FEEDING mechanisms may hold the key to understanding the selective pressures that led to the evolution of vertebrates1–3. But in the absence of direct evidence, hypotheses of feeding mechanisms in the most primitive extinct vertebrates are somewhat speculative, and scenarios that seek to explain vertebrate origins remain controversial. The recognition that… (More)
DOI: 10.1038/374798a0

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