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Jack?

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

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The “Dream Bone” Gryposaurus pelvis is coming

The “Dream Bone” Gryposaurus pelvis is coming along. The pubis and ischia are finished, the ilia are out and in prep, and the sacrum is all that’s left in it’s original jacket..

My skeletal teaching collection is overflowing on

My skeletal teaching collection is overflowing on to my books.. Good thing classes start soon!

In the past 5 hours this spider (wolf spider I thi

In the past 5 hours this spider (wolf spider I think) has constructed this beautiful web on my porch right in front of my front door.. obviously it has to go but I’ll leave it up over night and tomorrow so she can catch her dinner, a midnight snack, breakfast, and lunch. 🕷️🕸️ Maybe I can get her to build a new one when Halloween rolls around.

The disarticulated left frontal bone of T. rex sho

The disarticulated left frontal bone of T. rex shows evidence of pachyostotic development.. I wonder why a rex would need an overly thickened skull roof? 🦖

Rooting through some old stuff I found this Shelby

Rooting through some old stuff I found this Shelby High graduation announcement for Jack Horner, my father, from 1932. From the “new high school auditorium.” For our class of ‘64, that “new high school” was the old high school we left after our freshman year.

The adventure continues, from Slough Credk on the

The adventure continues, from Slough Credk on the south side of the Beartooth to the Boulder River on the north side.. at 6,500 feet, thanks to Stuart and Dava Stenberg, and Audrey and John O’Connell. In the Judith River Formation looking at fossil trees!!

Hadrosaur jaw in situ from the Redding field Stati

Hadrosaur jaw in situ from the Redding field Station, Judith River Formation found by Rod Caldwell, collected by Heath Caldwell and crew, exclusively for #FossilFriday

Darn nice hangin out on the outcrop with my good f

Darn nice hangin out on the outcrop with my good friend and x, Vanessa Weaver❣️

Our joint Oklahoma State-Chapman-Montana State, Ju

Our joint Oklahoma State-Chapman-Montana State, Judithian Expedition at the Redding Field Station, Hill County, Montana! Holly Woodward Ballard, Field Crew Leader. Sponsored by Nathan Myhrvold, Seattle.

2023 field crew at the Redding Field Station, Holl

2023 field crew at the Redding Field Station, Holly Woodward Ballard (blue shirt), Field Crew Chief!!
Diggin Dinosaurs from the Judith River Formation!!

With our Chapman University crew at the Museum of

With our Chapman University crew at the Museum of the Rockies in route to our dinosaur dig site! 🦖

The magnificent Sphinx Mountain from the Madison V

The magnificent Sphinx Mountain from the Madison Valley, Madison County, Montana.. in route to the Redding Field Station for 3 weeks of dinosaur hunting, digging and researching.

Happy Jurassic Park 30th Anniversary!! 🦖

Happy Jurassic Park 30th Anniversary!! 🦖

Hard to fathom that it’s been 30 years and yet i

Hard to fathom that it’s been 30 years and yet it would be hard to get as much fun as I’ve had packed into any less time! #JurassicParkMovies #DiggingDinosaurs #justHavingFun

As we disperse out to the 2023 field season I see

As we disperse out to the 2023 field season I see that a number of former students are headed to the Judith River sediments that have produced baby remains. My hope is for some good embryos in eggs and especially for some post hatchlings, preferably in nests. Post hatchling lambeosaurines are twice the size of posthatchling hadrosaurines. This photo is of embryonic lambeosaurs bones. Their degree of ossification can only be determined by histology or synchrotron analysis.. Find some cool specimens everyone!! It’s time for more baby dinosaurs!! 🦖

Instagram post 18023516293544655

Instagram post 18023516293544655

My graduating Dino-lab seniors, Ben and Amalie! 🥳🎉🥳🦖

In June of 1946 when I was born my parents lived i

Bob Harmon, Ken Carpenter, and a nest with baby M

Bob Harmon, Ken Carpenter, and a nest with baby Maiasaura skeletons! #fossilfriday

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