boys of the ancient sea
February 15, 2025 at 6:07 PM
boys of the ancient sea
#MolluscMonday Neither nautiloid nor ammonite, this is an early ammonoid, Timanites keyserlingi (Order Agoniatitida) of Devonian age. The large body chamber in this specimen is sediment-filled, whereas the chambers forming the phragmocone are infilled with calcite.
January 19, 2026 at 7:56 AM
#MolluscMonday Neither nautiloid nor ammonite, this is an early ammonoid, Timanites keyserlingi (Order Agoniatitida) of Devonian age. The large body chamber in this specimen is sediment-filled, whereas the chambers forming the phragmocone are infilled with calcite.
#FossilFriday The Late Cretaceous ammonoid Plesiacanthoceras wyomingense at the old displays of the National Museum of Natural History
April 4, 2025 at 12:33 PM
#FossilFriday The Late Cretaceous ammonoid Plesiacanthoceras wyomingense at the old displays of the National Museum of Natural History
NOBODY PANIC BUT THE AMMONOID PLUSH IS FINALLY BACK IN STOCK AT THE PRI EVERYBODY STAY CALM!!!!
pri-gift-shop.myshopify.com/collections/...
pri-gift-shop.myshopify.com/collections/...
Paleozoic Pals Ammonoid Plush
Ammonoid Devonian through Permian cephalopod Ammonoids are a major group of extinct shelled cephalopods (the group containing octopuses and squid) that lived from the Devonian (~380 million years ago)...
pri-gift-shop.myshopify.com
February 11, 2026 at 11:49 PM
NOBODY PANIC BUT THE AMMONOID PLUSH IS FINALLY BACK IN STOCK AT THE PRI EVERYBODY STAY CALM!!!!
pri-gift-shop.myshopify.com/collections/...
pri-gift-shop.myshopify.com/collections/...
FCF= Fat crinoid friday
FAF= Fat ammonoid friday
FAF= Fat ammonoid friday
January 31, 2025 at 6:50 PM
FCF= Fat crinoid friday
FAF= Fat ammonoid friday
FAF= Fat ammonoid friday
Platypterygius elsuntuoso, the ichthyosaur, hunting an ammonoid, Nicklesia pulchella.
El mar se estremeció primero
Illustrated for: 3° Congreso Colombiano de Paleontología Paleoart contest - 1st place Digital Illustration category.
This illustration was originally intended to go out with the publication but life got in the way, I resumed work on it mid-August.
Illustrated for: 3° Congreso Colombiano de Paleontología Paleoart contest - 1st place Digital Illustration category.
This illustration was originally intended to go out with the publication but life got in the way, I resumed work on it mid-August.
September 22, 2025 at 10:25 PM
Platypterygius elsuntuoso, the ichthyosaur, hunting an ammonoid, Nicklesia pulchella.
#MolluscMonday The florid chamber-dividing sutures of the ammonoid Phylloceras are here emphasised by painting one of the chambers white. The function of such complex sutures is debated.
May 11, 2026 at 5:38 AM
#MolluscMonday The florid chamber-dividing sutures of the ammonoid Phylloceras are here emphasised by painting one of the chambers white. The function of such complex sutures is debated.
A 320 million year old Goniatite fossil. Goniatites were old members of the Ammonoid cephalopod group that went extinct around 250 million years ago.
County Clare, Ireland.
County Clare, Ireland.
December 9, 2024 at 7:39 PM
A 320 million year old Goniatite fossil. Goniatites were old members of the Ammonoid cephalopod group that went extinct around 250 million years ago.
County Clare, Ireland.
County Clare, Ireland.
For my first post here, I'm sharing a little collage of my work: three natural science illustrations and one coin design. I've been a self-employed illustrator for nearly 25 years now, so this is a small sampling. Many more examples here: emilydamstra.com
#sciart #paleoart #coindesign #fishart
#sciart #paleoart #coindesign #fishart
January 10, 2025 at 11:57 PM
For my first post here, I'm sharing a little collage of my work: three natural science illustrations and one coin design. I've been a self-employed illustrator for nearly 25 years now, so this is a small sampling. Many more examples here: emilydamstra.com
#sciart #paleoart #coindesign #fishart
#sciart #paleoart #coindesign #fishart
𝐀𝐦𝐦𝐨𝐧𝐨𝐢𝐝 - "𝐃𝐞𝐯𝐢𝐥'𝐬 𝐁𝐫𝐞𝐚𝐭𝐡" (Single, 2026) | Metal, doom
Another interesting track from Ammonoid and hopefully we will be hearing a full-length recording soon!
Another interesting track from Ammonoid and hopefully we will be hearing a full-length recording soon!
June 12, 2026 at 5:02 PM
𝐀𝐦𝐦𝐨𝐧𝐨𝐢𝐝 - "𝐃𝐞𝐯𝐢𝐥'𝐬 𝐁𝐫𝐞𝐚𝐭𝐡" (Single, 2026) | Metal, doom
Another interesting track from Ammonoid and hopefully we will be hearing a full-length recording soon!
Another interesting track from Ammonoid and hopefully we will be hearing a full-length recording soon!
Great first official day back for a postdoc at the University of Zurich! After the nautiloids and coleoids, let's now work on ammonoid phylogeny! 🐙
October 1, 2026 at 5:21 PM
Great first official day back for a postdoc at the University of Zurich! After the nautiloids and coleoids, let's now work on ammonoid phylogeny! 🐙
January 28, 2025 at 12:36 AM
Some prehistoric critters that the avid pocket monster fossil collector might recognize :)
March 17, 2026 at 3:25 PM
Some prehistoric critters that the avid pocket monster fossil collector might recognize :)
omigosh i JUST got a good idea
clippy, but it's that prehistoric ammonoid species whose shell grows in big oblong loops so it looks like a paper clip
clippy, but it's that prehistoric ammonoid species whose shell grows in big oblong loops so it looks like a paper clip
February 20, 2026 at 7:16 AM
omigosh i JUST got a good idea
clippy, but it's that prehistoric ammonoid species whose shell grows in big oblong loops so it looks like a paper clip
clippy, but it's that prehistoric ammonoid species whose shell grows in big oblong loops so it looks like a paper clip
For the first #fossilfriday of 2026, I present some lovely marine fossils of lower Carboniferous (Visean) age, from the Bowland Shale Fm (formally the Poyllvaaish fm) from the Isle of Man.
These are found in some very famous steps in London… anyone know where?
These are found in some very famous steps in London… anyone know where?
January 2, 2026 at 6:21 PM
For the first #fossilfriday of 2026, I present some lovely marine fossils of lower Carboniferous (Visean) age, from the Bowland Shale Fm (formally the Poyllvaaish fm) from the Isle of Man.
These are found in some very famous steps in London… anyone know where?
These are found in some very famous steps in London… anyone know where?
2/7
Ammonites (a type of ammonoid) are an extinct group of marine cephalopods. They disappeared at the end of the Cretaceous.
Their shells were made mostly of aragonite — the same mineral you still find in mother-of-pearl today.
Usually though, during fossilization that aragonite turns into calcite⤵️
Ammonites (a type of ammonoid) are an extinct group of marine cephalopods. They disappeared at the end of the Cretaceous.
Their shells were made mostly of aragonite — the same mineral you still find in mother-of-pearl today.
Usually though, during fossilization that aragonite turns into calcite⤵️
July 12, 2026 at 4:30 PM
2/7
Ammonites (a type of ammonoid) are an extinct group of marine cephalopods. They disappeared at the end of the Cretaceous.
Their shells were made mostly of aragonite — the same mineral you still find in mother-of-pearl today.
Usually though, during fossilization that aragonite turns into calcite⤵️
Ammonites (a type of ammonoid) are an extinct group of marine cephalopods. They disappeared at the end of the Cretaceous.
Their shells were made mostly of aragonite — the same mineral you still find in mother-of-pearl today.
Usually though, during fossilization that aragonite turns into calcite⤵️
𝑳𝒊𝒔𝒕𝒆𝒏 𝒉𝒆𝒓𝒆 ⬇️
Ammonoid - "Devil's Breath" (Single, 2026) | Metal, doom
ABMN presents the progressive doom-psych US project Ammonoid, with an advanced song from their upcoming album!
Band: Ammonoid
Song: "Devil's Breath"
Genre: metal, doom, psych, prog
Released Deember 2nd, 2025
Location: US
Track:
01. Devil's Breath (00:00)
Review:https://abmn.noblogs.org/ammonoid
youtu.be
June 12, 2026 at 5:02 PM
𝑳𝒊𝒔𝒕𝒆𝒏 𝒉𝒆𝒓𝒆 ⬇️
Day 14 of photoshopping @lastweektonight.com's John Oliver with fossils in the hopes that he saves the Paleontological Research Institution
Maybe an American ammonoid? Oxytropidoceras acutocarinatum KUMIP148309 Comedian is H. sapiens
#savePRI #weneedyourhelp ⚒️plsshare
www.14850.com/012339759-le...
Maybe an American ammonoid? Oxytropidoceras acutocarinatum KUMIP148309 Comedian is H. sapiens
#savePRI #weneedyourhelp ⚒️plsshare
www.14850.com/012339759-le...
May 12, 2025 at 12:49 AM
Day 14 of photoshopping @lastweektonight.com's John Oliver with fossils in the hopes that he saves the Paleontological Research Institution
Maybe an American ammonoid? Oxytropidoceras acutocarinatum KUMIP148309 Comedian is H. sapiens
#savePRI #weneedyourhelp ⚒️plsshare
www.14850.com/012339759-le...
Maybe an American ammonoid? Oxytropidoceras acutocarinatum KUMIP148309 Comedian is H. sapiens
#savePRI #weneedyourhelp ⚒️plsshare
www.14850.com/012339759-le...
The teeniest ammonoid you ever laid your eyes upon (from the late Trassic of the Canadian Arctic.)
October 22, 2024 at 10:36 PM
The teeniest ammonoid you ever laid your eyes upon (from the late Trassic of the Canadian Arctic.)
Interesting study analyzing paleobiogeographical patterns of the P-Tr extinction and recovery
"ammonoid biogeography was primarily dispersal-constrained during the Griesbachian and Spathian, and niche-constrained during the Smithian"
www.scup.com/doi/full/10....
🧪 ⚒️ #Paleobio #EvoBio #Macroecology
"ammonoid biogeography was primarily dispersal-constrained during the Griesbachian and Spathian, and niche-constrained during the Smithian"
www.scup.com/doi/full/10....
🧪 ⚒️ #Paleobio #EvoBio #Macroecology
October 5, 2025 at 8:25 AM
Interesting study analyzing paleobiogeographical patterns of the P-Tr extinction and recovery
"ammonoid biogeography was primarily dispersal-constrained during the Griesbachian and Spathian, and niche-constrained during the Smithian"
www.scup.com/doi/full/10....
🧪 ⚒️ #Paleobio #EvoBio #Macroecology
"ammonoid biogeography was primarily dispersal-constrained during the Griesbachian and Spathian, and niche-constrained during the Smithian"
www.scup.com/doi/full/10....
🧪 ⚒️ #Paleobio #EvoBio #Macroecology
Tajika, A., Rashkova, A., Landman, N.H. et al. Lethal injuries on the scaphitid ammonoid Hoploscaphites nicolletii (Morton, 1842) in the Upper Cretaceous Fox Hills Formation, South Dakota, USA. Swiss J Palaeontol 144, 1 (2025). doi.org/10.1186/s133...
Lethal injuries on the scaphitid ammonoid Hoploscaphites nicolletii (Morton, 1842) in the Upper Cretaceous Fox Hills Formation, South Dakota, USA - Swiss Journal of Palaeontology
Predator–prey relationships are considered a major driver for the evolution of organisms, and thus contributed to shaping morphology, ecology, and diversity. During the Late Cretaceous of North Americ...
doi.org
January 12, 2025 at 1:57 PM
Tajika, A., Rashkova, A., Landman, N.H. et al. Lethal injuries on the scaphitid ammonoid Hoploscaphites nicolletii (Morton, 1842) in the Upper Cretaceous Fox Hills Formation, South Dakota, USA. Swiss J Palaeontol 144, 1 (2025). doi.org/10.1186/s133...
A thorny evolution: first Triassic ammonoid with a ventral apertural elongated rostrum onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
July 30, 2026 at 5:22 PM
A thorny evolution: first Triassic ammonoid with a ventral apertural elongated rostrum onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Contrasting Species-Level and Genus Level Disparity Patterns within the ammonoid family Acanthoceratidae https://www.biorxiv.org/content/10.64898/2026.03.20.713222v1
March 24, 2026 at 3:00 AM
Contrasting Species-Level and Genus Level Disparity Patterns within the ammonoid family Acanthoceratidae https://www.biorxiv.org/content/10.64898/2026.03.20.713222v1