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Photographing nature, birds, and animals is one of Jack’s favorite pastimes. Connect with Jack and Connect with Science!

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Cross section of a T. rex tooth socket showing a s

Cross section of a T. rex tooth socket showing a smaller, newer tooth (oval) migrating into a resorbed pocket (C shape) in the base of an larger, older, tooth. Dinosaurs had replacement teeth through their lives. The image is about 5 cm wide. #fossilfriday

A basket full of #fossilfriday representatives and

A basket full of #fossilfriday representatives and a lone descendant!

“We need more.” “More what?” “Teeth. We

“We need more.”
“More what?”
“Teeth. We need more teeth!”
Gray Mitchell (#tysimpkins) #jurassicworld

In preparation for my honors class “Dinosaurs: I

In preparation for my honors class “Dinosaurs: In Science and the Media,” I’ve done my upmost to get these extinctophytes to self-distance, but it’s been a chore! The Thyreophorans are naturals, but the morginocephalians are having their typical identity crises! The sorrypods don’t understand the situation although they like the idea of wearing masks, and the theropods are convinced it’s all a hoax to keep them from having lunch. The spinosaurs are chasing silverfish, and the therizinosaurs are scaring the crap (coprolites) out of everyone, including me...

The Cretaceous Dakota Sandstone Near Bryce Canyon

The Cretaceous Dakota Sandstone Near Bryce Canyon National Park, Utah #brycecanyon

It was a fun way to get to those out of the way ou

It was a fun way to get to those out of the way outcrops... July 23, 2003 Hell Creek Formation, MT

The baby parrot (conure) grooms himself while lyin

The baby parrot (conure) grooms himself while lying on his back... #birdsaredinosaurs

The microstructure of an Armored dinosaur’s armo

The microstructure of an Armored dinosaur’s armor is pretty awesome under a polarizing microscope. #dinosaurhistology

#blackouttuesday

#blackouttuesday

Juvenile Triceratops prorsus by John Sibbick. #tr

Juvenile Triceratops prorsus by John Sibbick. #triceratops #montanadinosaurs

Preening parakeet

Preening parakeet

Cherry-headed conure feeding on the male flowers o

Cherry-headed conure feeding on the male flowers of the white mulberry tree. 🦜 #beautifulbirds #birdsaredinosaurs #orangecountyparrots

#earthday2020 #birdsaredinosaurs

#earthday2020
#birdsaredinosaurs

You ever have one of those moments when sorting th

You ever have one of those moments when sorting through old photos where you stop and think... “is that really me?” My Princeton University field crew had just discovered Egg Mountain, and my brother Jim and sister Rosemary had come to our camp to visit. It was 1979, I was 33... obviously already had a serious problem with my hair.. my brother was a serious tough guy and my sister was always happy and smiling. #throwbackthursday

Hangin out in the home office in seclusion with th

Hangin out in the home office in seclusion with the non-self-distancing, social ornithischians..

Finishing final edits of the Vertebrate Paleontolo

Finishing final edits of the Vertebrate Paleontology of Montana with Dale Hanson for the bicentennial volume on the Geology of Montana.
Discoserra pectinodon Lund, 2000 from the Mississippian Bear Gulch Limestone, Fergus Co., MT #FossilFriday

Fall of 1979, my first attempt to reconstruct and

Fall of 1979, my first attempt to reconstruct and mount the skeleton of a dinosaur. A nestling Maiasaura peebesorum collected in the summer of 78. We had fossils of all the bones but the ribs, pubii, ischia, metacarpals and many cranial elements were highly distorted so I carved wooden replacements. #FossilFriday

A weekend traipsing around the serenely beautiful

A weekend traipsing around the serenely beautiful Mojave Desert near Atolia, CA. Lizards, birds, and a pavement of glistening, weathered pegmatite.

I’ve spent a lifetime looking for fossils on the

I’ve spent a lifetime looking for fossils on the ground, and through a microscope to examine them, and will continue, but at night I like to look up at the stars. It’s nice to have a new way to view them. #zenithstar73 #astrophotography

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© 2020 Jack Horner's Dinosaurs. All Rights Reserved, Horner Science Group
Image credits: Kelly Gorman, Montana State University, Museum of the Rockies, Kelly Addy, Peggy Mihelich, Universal Studios and Amblin Entertainment