January 29, 2025 at 5:30 PM
A fossilized piece of a Solitary Rugose Coral.
County Donegal, Ireland.
County Donegal, Ireland.
August 24, 2025 at 8:35 AM
A fossilized piece of a Solitary Rugose Coral.
County Donegal, Ireland.
County Donegal, Ireland.
Rugose coral video is done! Full video here:
www.youtube.com/watch?v=dwkM...
#SciArt #paleoart #3dAnimation #coral #reef
www.youtube.com/watch?v=dwkM...
#SciArt #paleoart #3dAnimation #coral #reef
May 9, 2026 at 11:50 AM
Rugose coral video is done! Full video here:
www.youtube.com/watch?v=dwkM...
#SciArt #paleoart #3dAnimation #coral #reef
www.youtube.com/watch?v=dwkM...
#SciArt #paleoart #3dAnimation #coral #reef
A Solitary Rugose Coral fossil in Burren limestone.
County Clare, Ireland.
County Clare, Ireland.
August 10, 2025 at 2:26 PM
A Solitary Rugose Coral fossil in Burren limestone.
County Clare, Ireland.
County Clare, Ireland.
Welcome back to #FossilFriday
Here is quite a large solitary rugose (horn) coral belonging to the taxa Grewingkia canadensis. This specimen was collected from the Upper Ordovician Whitewater (upper cincinnatian series) Formation in Indiana.
Here is quite a large solitary rugose (horn) coral belonging to the taxa Grewingkia canadensis. This specimen was collected from the Upper Ordovician Whitewater (upper cincinnatian series) Formation in Indiana.
January 23, 2026 at 4:17 PM
Welcome back to #FossilFriday
Here is quite a large solitary rugose (horn) coral belonging to the taxa Grewingkia canadensis. This specimen was collected from the Upper Ordovician Whitewater (upper cincinnatian series) Formation in Indiana.
Here is quite a large solitary rugose (horn) coral belonging to the taxa Grewingkia canadensis. This specimen was collected from the Upper Ordovician Whitewater (upper cincinnatian series) Formation in Indiana.
A Solitary Rugose Coral fossil with it's internal structure revealed.
County Donegal, Ireland.
County Donegal, Ireland.
October 25, 2025 at 10:46 AM
A Solitary Rugose Coral fossil with it's internal structure revealed.
County Donegal, Ireland.
County Donegal, Ireland.
February 25, 2026 at 9:47 AM
Welcome back to #FossilFriday!
Here is a Petoskey Stone which is Michigan's state stone. It is a colonial rugose coral known as Hexagonaria percarinata. This comes from the Middle Devonian (Givitian) Gravel Point Formation (Traverse Group). Each corallite that you see would have housed a polyp.
Here is a Petoskey Stone which is Michigan's state stone. It is a colonial rugose coral known as Hexagonaria percarinata. This comes from the Middle Devonian (Givitian) Gravel Point Formation (Traverse Group). Each corallite that you see would have housed a polyp.
December 5, 2025 at 3:52 PM
Welcome back to #FossilFriday!
Here is a Petoskey Stone which is Michigan's state stone. It is a colonial rugose coral known as Hexagonaria percarinata. This comes from the Middle Devonian (Givitian) Gravel Point Formation (Traverse Group). Each corallite that you see would have housed a polyp.
Here is a Petoskey Stone which is Michigan's state stone. It is a colonial rugose coral known as Hexagonaria percarinata. This comes from the Middle Devonian (Givitian) Gravel Point Formation (Traverse Group). Each corallite that you see would have housed a polyp.
More Solitary Rugose Coral fossils from the Carboniferous era.
County Donegal, Ireland.
Cormacscoast.com walking tours
County Donegal, Ireland.
Cormacscoast.com walking tours
May 31, 2026 at 5:14 PM
More Solitary Rugose Coral fossils from the Carboniferous era.
County Donegal, Ireland.
Cormacscoast.com walking tours
County Donegal, Ireland.
Cormacscoast.com walking tours
A fossilized Solitary Rugose Coral.
The Burren, County Clare, Ireland.
The Burren, County Clare, Ireland.
February 15, 2025 at 5:24 PM
A fossilized Solitary Rugose Coral.
The Burren, County Clare, Ireland.
The Burren, County Clare, Ireland.
A nice piece of Hexagonaria coral from Alpena, Michigan. This is a colonial rugose coral with 6 sided corallites. It's Devonian aged and about 365 million years old.
Michigan's state stone is commonly called a Petoskey stone as many beach worn specimens can be found near Petoskey, MI
#FossilFriday
Michigan's state stone is commonly called a Petoskey stone as many beach worn specimens can be found near Petoskey, MI
#FossilFriday
June 12, 2026 at 2:39 PM
A nice piece of Hexagonaria coral from Alpena, Michigan. This is a colonial rugose coral with 6 sided corallites. It's Devonian aged and about 365 million years old.
Michigan's state stone is commonly called a Petoskey stone as many beach worn specimens can be found near Petoskey, MI
#FossilFriday
Michigan's state stone is commonly called a Petoskey stone as many beach worn specimens can be found near Petoskey, MI
#FossilFriday
A large piece of a Solitary Rugose Coral fossil.
County Sligo, Ireland.
Cormacscoast.com walking tours
County Sligo, Ireland.
Cormacscoast.com walking tours
July 11, 2026 at 8:17 AM
A large piece of a Solitary Rugose Coral fossil.
County Sligo, Ireland.
Cormacscoast.com walking tours
County Sligo, Ireland.
Cormacscoast.com walking tours
Happy #FossilFriday from this Devonian rugose coral from Nevada that had a bad day but managed to right itself. MPM collections.
May 16, 2025 at 9:16 PM
Happy #FossilFriday from this Devonian rugose coral from Nevada that had a bad day but managed to right itself. MPM collections.
A colonial coral fossil and a Solitary Rugose Coral in the one shore tumbled stone.
County Donegal, Ireland.
County Donegal, Ireland.
June 10, 2025 at 4:21 PM
A colonial coral fossil and a Solitary Rugose Coral in the one shore tumbled stone.
County Donegal, Ireland.
County Donegal, Ireland.
May 25, 2026 at 4:31 PM
A Solitary Rugose Coral fossil. A remnant of an ancient tropical sea that once covered this area over 300 million years ago.
County Donegal, Ireland.
Cormacscoast.com walking tours
County Donegal, Ireland.
Cormacscoast.com walking tours
July 2, 2026 at 11:04 AM
A Solitary Rugose Coral fossil. A remnant of an ancient tropical sea that once covered this area over 300 million years ago.
County Donegal, Ireland.
Cormacscoast.com walking tours
County Donegal, Ireland.
Cormacscoast.com walking tours
Rugose horn coral for #FossilFriday. Skål! ⚒️
November 1, 2024 at 5:48 PM
Rugose horn coral for #FossilFriday. Skål! ⚒️
looking for a new eldritch horror
ask the author if their horror is squamous or rugose
he doesn't understand
I pull out illustrated diagram showing what is squamous and what is rugose
he laughs and says "it's a good horror, ma'am"
I read the story
it's rugose
ask the author if their horror is squamous or rugose
he doesn't understand
I pull out illustrated diagram showing what is squamous and what is rugose
he laughs and says "it's a good horror, ma'am"
I read the story
it's rugose
June 10, 2024 at 3:45 PM
looking for a new eldritch horror
ask the author if their horror is squamous or rugose
he doesn't understand
I pull out illustrated diagram showing what is squamous and what is rugose
he laughs and says "it's a good horror, ma'am"
I read the story
it's rugose
ask the author if their horror is squamous or rugose
he doesn't understand
I pull out illustrated diagram showing what is squamous and what is rugose
he laughs and says "it's a good horror, ma'am"
I read the story
it's rugose
More squamous and rugose than anyone could have imagined
May 26, 2025 at 9:58 PM
More squamous and rugose than anyone could have imagined
Solitary Rugose Coral fossils - remains of the tropical seabed that once covered this area over 300 million years ago.
County Donegal, Ireland.
County Donegal, Ireland.
November 3, 2025 at 9:30 AM
Solitary Rugose Coral fossils - remains of the tropical seabed that once covered this area over 300 million years ago.
County Donegal, Ireland.
County Donegal, Ireland.
A Solitary Rugose Coral fossil protruding from it's sedimentary bed.
County Donegal, Ireland.
County Donegal, Ireland.
October 31, 2025 at 8:50 AM
A Solitary Rugose Coral fossil protruding from it's sedimentary bed.
County Donegal, Ireland.
County Donegal, Ireland.
May 17, 2026 at 4:31 PM
I love a rugose snout
Points if you know who this belongs to (he’s not a warthog.)
Points if you know who this belongs to (he’s not a warthog.)
September 22, 2026 at 3:26 AM
I love a rugose snout
Points if you know who this belongs to (he’s not a warthog.)
Points if you know who this belongs to (he’s not a warthog.)
A Solitary Rugose Coral fossil protruding from the surrounding rock. Part of an ancient tropical sea bed that once covered this area.
County Donegal, Ireland.
County Donegal, Ireland.
September 3, 2025 at 9:56 AM
A Solitary Rugose Coral fossil protruding from the surrounding rock. Part of an ancient tropical sea bed that once covered this area.
County Donegal, Ireland.
County Donegal, Ireland.