Cretaceous-Paleogene, not Triassic. Ugh.
Pretty great day exploring UNESCO World Heritage Site at Stevns Klint w/ @ksvenenvig.bsky.social where the Cretaceous-Triassic boundary (dinosaurs go bye bye) is particularly well-exposed 🧪⚒️
September 23, 2026 at 4:01 PM
Cretaceous-Paleogene, not Triassic. Ugh.
PALEOGENE Period World Map (Medieval Bestiary Series)
Mesozoic and Permian maps are also available at Redbubble ( www.redbubble.com/es/people/ma... ) for prints and more, as this one is now too🌍 #paleoart #bestiary #paleogene #naturalhistory #prehistoricanimals #cenozoic #maps
Mesozoic and Permian maps are also available at Redbubble ( www.redbubble.com/es/people/ma... ) for prints and more, as this one is now too🌍 #paleoart #bestiary #paleogene #naturalhistory #prehistoricanimals #cenozoic #maps
May 9, 2025 at 8:59 AM
PALEOGENE Period World Map (Medieval Bestiary Series)
Mesozoic and Permian maps are also available at Redbubble ( www.redbubble.com/es/people/ma... ) for prints and more, as this one is now too🌍 #paleoart #bestiary #paleogene #naturalhistory #prehistoricanimals #cenozoic #maps
Mesozoic and Permian maps are also available at Redbubble ( www.redbubble.com/es/people/ma... ) for prints and more, as this one is now too🌍 #paleoart #bestiary #paleogene #naturalhistory #prehistoricanimals #cenozoic #maps
Paleogene Bestiary Cards (a few more at mariolanzas/tumblr) from the Paleogene Map stylized as medieval art #paleoagene #bestiary #medievalart #dentaneosuchus #embolotherium #basilosaurus
December 17, 2025 at 8:53 PM
Paleogene Bestiary Cards (a few more at mariolanzas/tumblr) from the Paleogene Map stylized as medieval art #paleoagene #bestiary #medievalart #dentaneosuchus #embolotherium #basilosaurus
Triassic? Paleogene, no?
September 23, 2026 at 3:57 PM
Triassic? Paleogene, no?
#Paleoctober2025 day 18 paleoart sketch with the terrestrial Paleogene crocodylomorph Sebecus.
#Paleoctober #Paleoart #Sebecus #crocodylomorph #archosaur
#Paleoctober #Paleoart #Sebecus #crocodylomorph #archosaur
October 20, 2025 at 8:31 AM
#Paleoctober2025 day 18 paleoart sketch with the terrestrial Paleogene crocodylomorph Sebecus.
#Paleoctober #Paleoart #Sebecus #crocodylomorph #archosaur
#Paleoctober #Paleoart #Sebecus #crocodylomorph #archosaur
The moment that changed everything.
The layer of iridium-rich clay found worldwide associated with the Cretaceous-Paleogene extinction event (the event that wiped out the dinosaurs).
The layer of iridium-rich clay found worldwide associated with the Cretaceous-Paleogene extinction event (the event that wiped out the dinosaurs).
January 11, 2025 at 7:25 PM
The moment that changed everything.
The layer of iridium-rich clay found worldwide associated with the Cretaceous-Paleogene extinction event (the event that wiped out the dinosaurs).
The layer of iridium-rich clay found worldwide associated with the Cretaceous-Paleogene extinction event (the event that wiped out the dinosaurs).
Back in 2022 I was inspired by the book "The Last Days of the Dinosaurs" by @restingdinoface.bsky.social to trek from my mossy cave in the PNW to touch the Cretaceous–Paleogene boundary in Colorado.
A moment, marked geologically in time, when the non-avian dinosaurs were murdered by space.
A moment, marked geologically in time, when the non-avian dinosaurs were murdered by space.
April 14, 2026 at 4:08 AM
Back in 2022 I was inspired by the book "The Last Days of the Dinosaurs" by @restingdinoface.bsky.social to trek from my mossy cave in the PNW to touch the Cretaceous–Paleogene boundary in Colorado.
A moment, marked geologically in time, when the non-avian dinosaurs were murdered by space.
A moment, marked geologically in time, when the non-avian dinosaurs were murdered by space.
Dinosaurs as ecosystem engineers!
Weaver, L.N., Tobin, T.S., Sprain, C.J. et al. Dinosaur extinction can explain continental facies shifts at the Cretaceous-Paleogene boundary. Commun Earth Environ 6, 712 (2025). doi.org/10.1038/s432...
Weaver, L.N., Tobin, T.S., Sprain, C.J. et al. Dinosaur extinction can explain continental facies shifts at the Cretaceous-Paleogene boundary. Commun Earth Environ 6, 712 (2025). doi.org/10.1038/s432...
Dinosaur extinction can explain continental facies shifts at the Cretaceous-Paleogene boundary - Communications Earth & Environment
Dinosaurs promoted open habitats in the Late Cretaceous, and their extinction could have led to a radical reorganization of the landscape and ecosystem structure at the beginning of the Paleogene, acc...
doi.org
September 15, 2025 at 4:40 PM
Dinosaurs as ecosystem engineers!
Weaver, L.N., Tobin, T.S., Sprain, C.J. et al. Dinosaur extinction can explain continental facies shifts at the Cretaceous-Paleogene boundary. Commun Earth Environ 6, 712 (2025). doi.org/10.1038/s432...
Weaver, L.N., Tobin, T.S., Sprain, C.J. et al. Dinosaur extinction can explain continental facies shifts at the Cretaceous-Paleogene boundary. Commun Earth Environ 6, 712 (2025). doi.org/10.1038/s432...
Earliest Cenozoic ammonoids:
Machalski, M., Olszewska-Nejbert, D., Landman, N.H. et al. Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark. Sci Rep 15, 45802 (2025). doi.org/10.1038/s415...
Machalski, M., Olszewska-Nejbert, D., Landman, N.H. et al. Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark. Sci Rep 15, 45802 (2025). doi.org/10.1038/s415...
Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark - Scientific Reports
We provide a reassessment of the hypothesis of ammonite survival across the Cretaceous–Paleogene (Maastrichtian–Danian) boundary, based on new data from the lower Danian Cerithium Limestone Member at ...
doi.org
January 1, 2026 at 5:30 PM
Earliest Cenozoic ammonoids:
Machalski, M., Olszewska-Nejbert, D., Landman, N.H. et al. Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark. Sci Rep 15, 45802 (2025). doi.org/10.1038/s415...
Machalski, M., Olszewska-Nejbert, D., Landman, N.H. et al. Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark. Sci Rep 15, 45802 (2025). doi.org/10.1038/s415...
Remember to check your kids candy for paleontology! #paleontology
October 30, 2025 at 11:57 PM
Remember to check your kids candy for paleontology! #paleontology
The Chicxulub mega-earthquake: Stratigraphic evidence from the Cretaceous-Paleogene boundary of Colombian Pacific and northeastern Mexico
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
The Chicxulub mega-earthquake: Stratigraphic evidence from the Cretaceous-Paleogene boundary of Colombian Pacific and northeastern Mexico
The Chicxulub impact coincides with the Cretaceous-Paleogene (K-Pg) boundary and is considered the trigger of the last of the “Big Five” mass extincti…
www.sciencedirect.com
April 1, 2026 at 12:22 AM
The Chicxulub mega-earthquake: Stratigraphic evidence from the Cretaceous-Paleogene boundary of Colombian Pacific and northeastern Mexico
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
The weirdness of the Paleogene must be appreciated.
February 6, 2026 at 2:08 PM
The weirdness of the Paleogene must be appreciated.
And original article: www.nature.com/articles/s43...
Dinosaur extinction can explain continental facies shifts at the Cretaceous-Paleogene boundary - Communications Earth & Environment
Dinosaurs promoted open habitats in the Late Cretaceous, and their extinction could have led to a radical reorganization of the landscape and ecosystem structure at the beginning of the Paleogene, acc...
www.nature.com
September 21, 2026 at 7:22 PM
And original article: www.nature.com/articles/s43...
Another paper from our NASA-funded project on ferns has dropped! UWyoming MS student Fern (really!) Holian, developed a new schema for classifying fossil ferns, which are understudied. 🧪🌿☄️
Application of a novel schema for describing fossil fern foliage and investigating taxonomic and morphological change across the Cretaceous–Paleogene boundary in western North America
Premise
The Chicxulub asteroid impact at the Cretaceous–Paleogene (K–Pg) boundary triggered a mass extinction 66 million years ago. Ferns thrived in the aftermath of the extinction, evidenced by the.....
bsapubs.onlinelibrary.wiley.com
August 1, 2026 at 3:59 PM
Another paper from our NASA-funded project on ferns has dropped! UWyoming MS student Fern (really!) Holian, developed a new schema for classifying fossil ferns, which are understudied. 🧪🌿☄️
The last bombshell paleontology discovery of a year of bombshell discoveries: Ammonites survived the K-PG extinction! www.nature.com/articles/s41...
Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark - Scientific Reports
We provide a reassessment of the hypothesis of ammonite survival across the Cretaceous–Paleogene (Maastrichtian–Danian) boundary, based on new data from the lower Danian Cerithium Limestone Member at ...
www.nature.com
January 1, 2026 at 2:16 PM
The last bombshell paleontology discovery of a year of bombshell discoveries: Ammonites survived the K-PG extinction! www.nature.com/articles/s41...
Dinosaurs were ecosystem engineers! Like modern elephants, Dinosaurs knocked down trees, creating open floodplain landscapes with meandering rivers. After their extinction, Paleocene landscapes became dense forests with coal swamps. 🧪
www.nature.com/articles/s43...
www.nature.com/articles/s43...
Dinosaur extinction can explain continental facies shifts at the Cretaceous-Paleogene boundary - Communications Earth & Environment
Dinosaurs promoted open habitats in the Late Cretaceous, and their extinction could have led to a radical reorganization of the landscape and ecosystem structure at the beginning of the Paleogene, acc...
www.nature.com
September 15, 2025 at 11:55 AM
Dinosaurs were ecosystem engineers! Like modern elephants, Dinosaurs knocked down trees, creating open floodplain landscapes with meandering rivers. After their extinction, Paleocene landscapes became dense forests with coal swamps. 🧪
www.nature.com/articles/s43...
www.nature.com/articles/s43...
December 5, 2024 at 5:37 PM
New remarkably complete skeleton of Mixodectes reveals arboreality in a large Paleocene primatomorphan mammal following the Cretaceous-Paleogene mass extinction www.nature.com/articles/s41...
New remarkably complete skeleton of Mixodectes reveals arboreality in a large Paleocene primatomorphan mammal following the Cretaceous-Paleogene mass extinction - Scientific Reports
Scientific Reports - New remarkably complete skeleton of Mixodectes reveals arboreality in a large Paleocene primatomorphan mammal following the Cretaceous-Paleogene mass extinction
www.nature.com
March 21, 2025 at 9:05 PM
New remarkably complete skeleton of Mixodectes reveals arboreality in a large Paleocene primatomorphan mammal following the Cretaceous-Paleogene mass extinction www.nature.com/articles/s41...
The Trump administration just texted me the plans to abolish the Paleogene and Neogene and return to the good old Tertiary.
⚒️🧪
⚒️🧪
March 24, 2025 at 8:34 PM
The Trump administration just texted me the plans to abolish the Paleogene and Neogene and return to the good old Tertiary.
⚒️🧪
⚒️🧪
Assorted drawings I've done but maybe not shared. Fighting elephant seals, the Paleogene pantodont Coryphodon, a Black rough-necked monitor, and the Triassic trilophosaur Teraterpeton.
October 13, 2025 at 8:02 PM
Assorted drawings I've done but maybe not shared. Fighting elephant seals, the Paleogene pantodont Coryphodon, a Black rough-necked monitor, and the Triassic trilophosaur Teraterpeton.
Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark👇⚒️
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark - Scientific Reports
We provide a reassessment of the hypothesis of ammonite survival across the Cretaceous–Paleogene (Maastrichtian–Danian) boundary, based on new data from the lower Danian Cerithium Limestone Member at ...
www.nature.com
January 2, 2026 at 12:32 PM
Ammonite survival across the Cretaceous–Paleogene boundary confirmed by new data from Denmark👇⚒️
www.nature.com/articles/s41...
www.nature.com/articles/s41...
That's not all. There's a good showing of #palaeoart, mostly the work of @markwitton.bsky.social (#dinosaurs, Paleogene, Pleistocene) and also Anthony Hutchings (mostly #spinosaurids)...
April 5, 2025 at 12:24 PM
That's not all. There's a good showing of #palaeoart, mostly the work of @markwitton.bsky.social (#dinosaurs, Paleogene, Pleistocene) and also Anthony Hutchings (mostly #spinosaurids)...
Messinian Salinity Opportunity.
Great Oxygen Opportunity.
Cretaceous-Paleogene Biotic Opportunity.
Great Oxygen Opportunity.
Cretaceous-Paleogene Biotic Opportunity.
mid-life opportunity, debt opportunity, opportunity of faith, opportunity actor, opportunity comms, Opportunity on Infinite Earths (DC Comics)
January 2, 2026 at 8:26 PM
Messinian Salinity Opportunity.
Great Oxygen Opportunity.
Cretaceous-Paleogene Biotic Opportunity.
Great Oxygen Opportunity.
Cretaceous-Paleogene Biotic Opportunity.