Extended Data Fig. 6: Examples of well-preserved microfossils found in the Devils Sequence.
From: Semi-continuous release of Cordilleran Ice Sheet meltwater between 20,000 and 17,000 years ago
(a) Picea cf. sitchensis; (b) Pinus cf. contorta; (c) Betula; (d) Alnus; (e) Chenopodiaceae; (f) Fern monolete spore; (g) Algae (cf. snow algae).
