@KateShaw has made a new episode, featuring goblet-shaped Diskagma of the Paleoproterozoic, and Horodyskia of the Mesoproterozoic and Neoproterozoic.

https://strangeanimalspodcast.blubrry.net/2025/08/04/episode-444-diskagma-and-horodyskia/

#fossils
#preCambrian
#proterozoic
#Paleoproterozoic
#Mesoproterozoic
#Neoproterozoic
#Ediacaran

Ectasian (Geological periods 🌍)

The Ectasian Period is the second geologic period in the Mesoproterozoic Era and lasted from 1400 Mya to 1200 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. Geologically the name refers to the continued expansion of platform covers during this period. In the early Ectasian period, a day was 17 hours and 32 min...

https://en.wikipedia.org/wiki/Ectasian

#Ectasian #Mesoproterozoic #GeologicalPeriods #ProterozoicGeochronology

Calymmian (Geological periods 🌍)

The Calymmian Period is the first geologic period in the Mesoproterozoic Era and lasted from 1600 Mya to 1400 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. The period is characterised by expansion of existing platform covers, or by new platforms on recently cratonized basements. The supercontinent Columbia...

https://en.wikipedia.org/wiki/Calymmian

#Calymmian #Mesoproterozoic #GeologicalPeriods #ProterozoicGeochronology

Volyn biota (Ecosystems 🏞️)

The Volyn biota are fossilized microorganisms found in rock samples from miarolitic cavities of igneous rocks collected in Zhytomyr Oblast, Ukraine. It is within the historical region of Volyn, hence the name of the find. Exceptionally well-preserved, they were dated to 1.5 Ga, within the "Boring Billion" period of the Proterozoic geological ...

https://en.wikipedia.org/wiki/Volyn_biota

#VolynBiota #Volhynia #Ecosystems #Lithophiles #ZhytomyrOblast #Mesoproterozoic

Volyn biota (Ecosystems 🏞️)

The Volyn biota are fossilized microorganisms found in rock samples from miarolitic cavities of igneous rocks collected in Zhytomyr Oblast, Ukraine. It is within the historical region of Volyn, hence the name of the find. Exceptionally well-preserved, they were dated to 1.5 Ga, within the "Boring Billion" period of the Proterozoic geological ...

https://en.wikipedia.org/wiki/Volyn_biota

#VolynBiota #Volhynia #Ecosystems #Lithophiles #ZhytomyrOblast #Mesoproterozoic

Calymmian (Geological periods 🌍)

The Calymmian Period is the first geologic period in the Mesoproterozoic Era and lasted from 1600 Mya to 1400 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. The period is characterised by expansion of existing platform covers, or by new platforms on recently cratonized basements. The supercontinent Columbia...

https://en.wikipedia.org/wiki/Calymmian

#Calymmian #Mesoproterozoic #GeologicalPeriods #ProterozoicGeochronology

Mud Could Have Made Meandering Rivers Long Before #Plants Arrived https://eos.org/research-spotlights/mud-could-have-made-meandering-rivers-long-before-plants-arrived

Pre-#Vegetation, Single-Thread #Rivers Sustained by Cohesive, Fine-Grained Bank #Sediments: #Mesoproterozoic Stoer Group, NW #Scotland https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL104379

"New evidence from 1.2-billion-year-old rocks suggests that single, sinuous channels could have formed in muddy floodplain sediments without the stabilizing help of vegetation."