bedding surface with large hemispherical Nimbia and several varieties of the chambered Palaeopascichnus gracilis and narrow P. linearis

detail showing the narrow chambered palaeopascichnus linear is

large Aspidella terranovica (oval) much smaller three lobed triforillonia beneath and a variety of chambered protists Palaeopascichnus

It’s midterms here at MUN & with cleanup from a 75cm 2 day snowstorm too it’s been a disrupted week, so a quick #FossilFriday post- #KotlinCrisis bedding plane from Ferryland NL with #Palaeopascichnus, #Aspidella terranovica & #Triforillonia material of Dr Latha Menon (submitting next week!!)

ovoid Aspidella terranovica with central groove next to 3 lobed Triforillonia

Chambered branching protistan fossil Palaeopascichnus left and a bulbous, discoidal Nemiana sp bottom

This #FossilFriday, how about a little look forward in the #Ediacaran to the post Kotlin Crisis extinction event strata in in Newfoundland. doi.org/10.1130/G542...

The post-extinction biotas are dominated by discs such as #Aspidella terranovica and the giant protistan #Palaeopascichnus.

sediment surface covered in small circular impressions of possible Cnidarians some have concentric rings (ediacaria) others radial structure (Aspidella terranovica) and a weird triradial form a bit like aspidella (Triforillonia). Scale bar 1cm

Happy #fossilfriday from the #Ediacaran of Newfoundland. Slightly younger than our most impressive frondose fossils, but the discs of the upper Fermeuse Formation have their own charm. This block has #Aspidella terranovica, the triangular #Triforillonia costellae & Ediacaria flindersi.

Ediacaran fossil bedding plane taken from above showing around 7 large examples of Aspidella and an apparent fluid escape structure.

I'm becoming convinced that #Aspidella were some form of fluid escape structures based on their strong association with matgrounds, apparent fluid escape markings in some examples (below), collapsed central regions, lack of fronds and presence at multiple depths (and more).
#Ediacaran

Aspidella fossil, which looks like concentric oval shaped disks, next to a snail shell

Bradgatia, a small cabbage-shaped fossil

slight indentation of a fossil in a grey rock

Charniodiscus, a fossil with a disk connecting the stem and frond to the ocean floor

#fossils
#Bonavista #NL

#PortUnion #Ediacaran #Bradgatia #Aspidella #lowtide #rock #ocean #sea #texture #relief #slight #geosite #discoverytrail #adventure #art #indigenousart #indigenousartist #contemporaryart #contemporaryartist #canadianartist #visualart #melissatremblett #melissatremblettart