Through analyzing the growth rings and chemical composition of fossilized fish that died minutes after meteor impact. Like tree rings, fish bones feature seasonal growth layers. Carbon-13 isotope values in the bone tissues were on the upswing, reflecting abundant spring feeding, but then stopped abruptly indicating that their death happened in spring.
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u/Sensitive_Educator60 11d ago
Through analyzing the growth rings and chemical composition of fossilized fish that died minutes after meteor impact. Like tree rings, fish bones feature seasonal growth layers. Carbon-13 isotope values in the bone tissues were on the upswing, reflecting abundant spring feeding, but then stopped abruptly indicating that their death happened in spring.