Radiocarbon dating rewrites angiosperm #trees' lifespan records worldwide https://phys.org/news/2026-03-radiocarbon-dating-rewrites-angiosperm-trees.html paper: https://www.cambridge.org/core/journals/radiocarbon/article/abs/radiocarbon-dating-opens-up-new-frontiers-in-the-study-of-tree-longevity-insights-from-angiosperm-trees/D0B293603AB4AB049F67EB26400A8C0F

"tree rings may have been underestimating the #lifespan of many trees—sometimes by centuries... #RadiocarbonDating can dramatically extend the known maximum age of broadleaved trees... maximum lifespans of 400–500 years are not exceptional among many species... 20 species exceeded 500 years, and five surpassed 1,000 years."

#LostBones #FossilFriday #RadioCarbonDating 🐂🦥🐴🐘🐪In June 1921, workers removing the overburden at the Sagamore Mine near Riverton, Minnesota uncovered a peat layer ~eight feet below the surface that held a rich Pleistocene bone bed. Among the material recovered from this layer were a horse molar (specimen #6) and an horse incisor, found alongside other late‑Quaternary remains within the same sedimentary zone.

https://www.crowwinghistory.org

#pleistocene #palaeontology #CitizenScience #Equus

🐴 #LostBones #FossilFriday — Twelve horse teeth from across Minnesota are headed for radiocarbon dating.

This pristine specimen #3 comes from Flower Valley near Red Wing. It was found by Shari Albers when she was ten, discovered as her dad worked a field.

Read the full story in Lost Bones #4 (link in my profile).

#Pleistocene #IceAgeMinnesota #RadiocarbonDating

Photo Credit: Purple prairie clover central MN / Kelly Povo

🐴 #LostBones 🐘🦥🐪 For #FossilFriday, a new series: 12 horse teeth from across Minnesota, each one headed for radiocarbon dating to finally pin down when these animals moved across the state’s post glacial landscape.

Specimen #1 comes from a private collection near Little Sauk, Minnesota — a single horse tooth pulled from a skull found in the black marl of the Sauk River.

How do they fit into the lives or paleo-Minnesotans?

#Pleistocene #Equus #Paleontology #CitizenScience #RadiocarbonDating

Radiocarbon dating reveals Rapa Nui not as isolated as previously thought

https://phys.org/news/2025-06-radiocarbon-dating-reveals-rapa-nui.html

#HackerNews #RadiocarbonDating #RapaNui #Archaeology #AncientCivilizations #Isolation