Fossils Reveal How Much Shorter Days Were 70 Million Years Ago

[Oxytropidoceras]

Ancient Shell Has Revealed Exactly How Much Shorter 

Days Were 70 Million Years Ago

https://www.sciencealert.com/old-shell-reveals-earth-s-days-were-half-an-hour-shorter-70-million-years-ago

 

de Winter, N.J., Goderis, S., Van Malderen, S.J., Sinnesael, M.,

Vansteenberge, S., Snoeck, C., Belza, J., Vanhaecke, F. and 

Claeys, P., Sub‐daily scale chemical variability in a Torreites 

sanchezi rudist shell: Implications for rudist paleobiology 

and the Cretaceous day‐night cycle. Paleoceanography 

and Paleoclimatology, p.e2019PA003723

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019PA003723

 

Yours,

 

Paul H.

[Thecosmilia Trichitoma]

This is amazing! Thanks for sharing it.