The study of past ecologies by using the evidence of fossils(noun)
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Use "palaeoecology" in a sentence
"Disciplines such as palaeoecology [using fossils to reconstruct past ecosystems] and phylogeography have helped elucidate how this poleward expansion occurred."
"While the role of refugial isolation remains speculative for most rainforest systems, the contraction of Australia's tropical rainforests into isolated refugia during cooler, drier climatic conditions is well documented, with parallel evidence from disparate sources such as palaeoecology comparative mitochondrial DNA (mtDNA) phylogeographies"
"They demonstrate the close interconnection between landforms and paedogenesis, palaeochemistry, climatology, archaeology, archaeomagnetism, radio-carbon dating, palaeoecology and faunal extinction."