#WeekendReading: Dodd et al. about recurring marine phosphorus spikes during major Paleozoic mass extinctions, and how they might be driving anoxia.
Phosphorus locked in carbonate rocks from seven global sites shows simultaneous marine phosphorus spikes during major mass extinctions. Modelling ties high marine phosphorus to eutrophication, CO2 drawdown, and global cooling.
Prague metro construction leads to discovery of new prehistoric species https://english.radio.cz/prague-metro-construction-leads-discovery-new-prehistoric-species-8885616
A new species of Soomaspis (Naraoiidae) from the Upper #Ordovician of Bohemia http://www.geology.cz/bulletin/contents/art1955
"the most surprising aspect of the find is that its closest known relative was previously identified only in southern Africa... Much of #Prague stands on rock formations dating back to the #Paleozoic era, between 541 and 252 million years ago."
Another wonderful vintage paleoart review is up at Love in the Time of Chasmosaurs:
Gemma covers beautiful ancient ocean life murals by Marie Hubrecht
https://chasmosaurs.com/2025/07/17/vintage-dinosaur-art-hubrecht-at-the-lyceum-part-2/
Tracks of Limnopus heterodactylid left on the sand 280M years ago (Permian period of the Paleozoic). The rock comes from the recently discovered fossil deposit in Val d'Ambria, on the Orobic Alps, Italy.
#Valtellina #Italy #fossil #Permian #Paleozoic #AlpiOrobiche #italianalps #LimnopusHeterodactylid
@KateShaw has made a great new episode about a mystery cambrian invertebrate, a mystery fish, and some other mysteries. Also, some donation links are included at the end, if you can donate to help people affected by Hurricane Helene and its aftermath.
https://strangeanimalspodcast.blubrry.net/2024/09/30/episode-400-four-mysteries/
The source of #paleozoic (hemi-) #pelagic calcareous #mud (before the rise modern pelagic calcifiers) has been bugging me, again, recently.
I have seen arguments for calcification of #cyanobacterial filaments, calcareous #dinoflagellates, breakdown of thin-walled fossils, and I'm not negating #abiotic sources.
Does anyone have any thoughts on the topic?
Giant ‘sea scorpions’ hunted #Australian waters like sharks.
The two NSW sea scorpion or “eurypterid” fossils, which are in the order of 400 million years old, shed new light on how these fearsome creatures reigned in the #Paleozoic era.
https://www.stuff.co.nz/environment/350392767/giant-sea-scorpions-hunted-australian-waters-sharks #fossils
Dr. Or M. Bialik
Lukas VFN 🇪🇺
charring auh
lumpenproletariat
💧🌏 Greg Cocks
llewelly
Folini @ Mastodon 🇮🇹 🇺🇸
Global Museum