GDLeahy
@xrciseguy.bsky.social
Pro-science, pro-vax, thinks exercise is a fountain of youth. Likes include hiking, photography and paleontology.
#FossilFriday: The gorgonopsid therapsid Lycaenops, on display at the Field Museum of Natural History, Chicago.
December 12, 2025 at 9:17 PM
#FossilFriday: The gorgonopsid therapsid Lycaenops, on display at the Field Museum of Natural History, Chicago.
#FossilFriday: Three different proboscideans, from left to right. Deinotherium, Gomphotherium and Notiomastodon. On display at the British Museum of Natural History, London.
December 5, 2025 at 10:13 PM
#FossilFriday: Three different proboscideans, from left to right. Deinotherium, Gomphotherium and Notiomastodon. On display at the British Museum of Natural History, London.
A few pics of Birmingham, UK.
December 5, 2025 at 2:05 PM
A few pics of Birmingham, UK.
A black-tailed jackrabbit (Lepus californicus) seen at Petroglyph National Park, New Mexico.
December 2, 2025 at 9:06 PM
A black-tailed jackrabbit (Lepus californicus) seen at Petroglyph National Park, New Mexico.
The Yaquina Bay Lighthouse, Yaquina Bay, Oregon. #Oregoncoast #landscape
December 1, 2025 at 6:53 PM
The Yaquina Bay Lighthouse, Yaquina Bay, Oregon. #Oregoncoast #landscape
It's Christmas market season (Weihnachtsmarkt) in Germany. The one in Wittlich (pictured) is small, as the village has 20,000 residents. Cities such as Frankfurt, Munich and Berlin have much larger markets. They started in German-speaking parts of Europe; the oldest one recorded was Dresden in 1434.
November 29, 2025 at 3:44 PM
It's Christmas market season (Weihnachtsmarkt) in Germany. The one in Wittlich (pictured) is small, as the village has 20,000 residents. Cities such as Frankfurt, Munich and Berlin have much larger markets. They started in German-speaking parts of Europe; the oldest one recorded was Dresden in 1434.
#FossilFriday: This unnamed species of lower Jurassic ichthyosaur was collected from County Warwickshire, south of Birmingham UK in 1955. It is on display at the Think Tank Museum in Birmingham.
November 28, 2025 at 9:59 PM
#FossilFriday: This unnamed species of lower Jurassic ichthyosaur was collected from County Warwickshire, south of Birmingham UK in 1955. It is on display at the Think Tank Museum in Birmingham.
#Fossilfriday: Pseudorhina alifera, a species of angel shark from the Upper Jurassic Solnhofen Limestone of Germany. Pseudorhina is the oldest known genus of angel shark (145-150 million years ago.)
November 21, 2025 at 6:49 PM
#Fossilfriday: Pseudorhina alifera, a species of angel shark from the Upper Jurassic Solnhofen Limestone of Germany. Pseudorhina is the oldest known genus of angel shark (145-150 million years ago.)
A local landmark in Birmingham UK, Ozzy the Bull (named after Ozzy Osbourne) was originally created for the 2022 Commonwealth Games. He was later moved to his new home in New Street Station, a major train station in Birmingham.
November 16, 2025 at 6:23 PM
A local landmark in Birmingham UK, Ozzy the Bull (named after Ozzy Osbourne) was originally created for the 2022 Commonwealth Games. He was later moved to his new home in New Street Station, a major train station in Birmingham.
#Veterans Memorial, Albuquerque, NM. #Veteransday
November 11, 2025 at 5:40 PM
#Veterans Memorial, Albuquerque, NM. #Veteransday
#FossilFriday: The pelycosaur Dimetrodon, from the Lower Permian of North America. Dimetrodon is frequently thought to be a dinosaur, when it fact it is more closely related to humans than dinosaurs!
November 7, 2025 at 10:09 PM
#FossilFriday: The pelycosaur Dimetrodon, from the Lower Permian of North America. Dimetrodon is frequently thought to be a dinosaur, when it fact it is more closely related to humans than dinosaurs!
#FossilFriday: The pelycosaur Dimetrodon, from the Lower Permian of North America. Dimetrodon is frequently thought to be a dinosaur, when it fact it is more closely related to humans than dinosaurs!
November 7, 2025 at 10:07 PM
#FossilFriday: The pelycosaur Dimetrodon, from the Lower Permian of North America. Dimetrodon is frequently thought to be a dinosaur, when it fact it is more closely related to humans than dinosaurs!
I was about to head home yesterday when this beautiful rainbow caught my attention... 😀
October 25, 2025 at 7:29 PM
I was about to head home yesterday when this beautiful rainbow caught my attention... 😀
#FossilFriday: Edmontosaurus annectens, from the uppermost Cretaceous of North America. Recent finds published this week indicate Edmontosaurus possessed rhino-like padded feet and small, triangular spines on the tail.
October 24, 2025 at 8:06 PM
#FossilFriday: Edmontosaurus annectens, from the uppermost Cretaceous of North America. Recent finds published this week indicate Edmontosaurus possessed rhino-like padded feet and small, triangular spines on the tail.
A gorgeous autumn Saturday in Wittlich, Germany... 😀
October 18, 2025 at 5:55 PM
A gorgeous autumn Saturday in Wittlich, Germany... 😀
#FossilFriday: Juvenile and adult skulls of the ornithomimid Gallimimus, from the Upper Cretaceous of Mongolia. Gallimimus is the largest known ornithomimid, and like other ornithomimids, likely possessed large arm feathers. Gallimimus is well known to the public, due to the #JurassicPark movies.
October 17, 2025 at 8:42 PM
#FossilFriday: Juvenile and adult skulls of the ornithomimid Gallimimus, from the Upper Cretaceous of Mongolia. Gallimimus is the largest known ornithomimid, and like other ornithomimids, likely possessed large arm feathers. Gallimimus is well known to the public, due to the #JurassicPark movies.
It's #NationalFossilDay, so here are some fossils you can see in U.S. museums.
October 15, 2025 at 5:31 PM
It's #NationalFossilDay, so here are some fossils you can see in U.S. museums.
#FossilFriday: The dome-headed pachycephalosaur Prenocephale, from the Upper Cretaceous Nemegt Formation of Mongolia.
October 10, 2025 at 8:37 PM
#FossilFriday: The dome-headed pachycephalosaur Prenocephale, from the Upper Cretaceous Nemegt Formation of Mongolia.
120 years ago today, Tyrannosaurus rex was first named and described...
October 4, 2025 at 5:23 PM
120 years ago today, Tyrannosaurus rex was first named and described...
#FossilFriday: Velociraptor mongoliensis, a dromaeosaurid theropod from the Upper Cretaceous of Mongolia. Though famous for its appearances in the #Jurassicpark and #jurassicworld films, the Velociraptor in those movies is actually modeled after Deinonychus, a much older theropod.
October 3, 2025 at 8:39 PM
#FossilFriday: Velociraptor mongoliensis, a dromaeosaurid theropod from the Upper Cretaceous of Mongolia. Though famous for its appearances in the #Jurassicpark and #jurassicworld films, the Velociraptor in those movies is actually modeled after Deinonychus, a much older theropod.
September 29, 2025 at 7:17 PM
A gorgeous example of opal, on display @hmns.bsky.social.
September 28, 2025 at 6:02 PM
A gorgeous example of opal, on display @hmns.bsky.social.
The aspens in the Sandia Mountains are at their golden peak this time of year!
September 27, 2025 at 6:00 PM
The aspens in the Sandia Mountains are at their golden peak this time of year!