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Dr Katie Malone

Posdoctoral researcher, Geotop-McGill

Mardi 20 f茅vrier 2024 脿 12h30 - Tuesday, February 20, 2024 at 12:30 pm

Local PK-7605, 7e 茅tage, 201 ave. du Pr茅sident-Kennedy

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Filling in the Gaps in the early Tonian Macroalgal Fossil Record

R茅sum茅 / abstract:

Macroalgae are ecosystem engineers that play a critical role in modern environments. However, their evolutionary history and ecological role in ancient ecosystems remains poorly constrained by a sparse fossil record. Here, we describe an exceptionally well-preserved assemblage of macrofossils discovered in the ca. 950 Ma Dolores Creek Formation, Wernecke Mountains, Yukon Territory. Three unique forms have been identified including Archaeochaeta guncho, interpreted as a green macroalga based on its large size and morphological complexity. New discoveries of well-preserved fossils continue to improve our understanding of the diversification and ecological expansion of macroalgae in the early Tonian Period.