[Rockhounds] For Late Ordovician graptolites, a long decline before extinction

[Paul]

For ancient deep-sea plankton, a long decline before extinction
University of Buffalo, Press release by Charlotte Hsu
http://www.buffalo.edu/news/releases/2016/07/017.html

Sheets, H.D., Mitchell, C.E., Melchin, M.J., Loxton, J., Štorch, P.,
Carlucci, K.L. and Hawkins, A.D., 2016. Graptolite community
responses to global climate change and the Late Ordovician
mass extinction. Proceedings of the National Academy of
Sciences, 113(30), pp.8380-8385.
https://www.pnas.org/content/113/30/8380.short

Researchgate PDF for above paper
https://www.researchgate.net/publication/305419220_Graptolite_community_responses_to_global_climate_change_and_the_Late_Ordovician_mass_extinction

Related publications
https://www.researchgate.net/profile/Charles_Mitchell2/publications

Yours,

Paul H.