John Day Formation

John Day Formation

From Fossil Fridays by Caroline Siegert

May 2, 2025 · 26 min

About this episode

This episode explores the John Day Formation in Oregon, highlighting various prehistoric organisms from 30 million years ago.

In this episode head back 30 million years to visit the John Day Formation in Oregon, USA. Organisms encountered in this episode include: Metasequoia, Polypodium, Pinus johndilyensis, Rubus, Platanus, hypertragulidae, Hydrangia, Ulmus, Fraxinus, Fagus pacifica, Toxicodendron wolfei, Quercus consimilis, Protosciurus rachelae, Vitis, Nuphar, Equisetum, Nimravid, Betula angustifolia, Alnus, Menispermum, Cornus, Paleocastor, Miohippus, Temnocyon, Terminalia, Acer, […]

People in this episode

Host: Caroline Siegert

Topics covered

  • paleontology
  • fossils
  • ancient ecosystems
  • John Day Formation
  • Oregon geology
  • prehistoric organisms

Keywords

  • John Day Formation
  • Oregon
  • paleontology
  • fossils
  • prehistoric organisms
  • ancient ecosystems

Mentioned in this episode

Books & works: Metasequoia, Polypodium, Pinus johndilyensis, Rubus, Platanus, hypertragulidae, Hydrangia, Ulmus, Fraxinus, Fagus pacifica

Places: John Day Formation, Oregon

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