Ambrox

A black and white drawing of a sweating ICE agent, looking over his shoulders at a bunch of disembodied eyes watching him. The text reads WE CAN SEE YOU

Summer 2025 edition

He Studied Why Some Female Birds Look Like Males

"I don’t know why my fellowship was terminated. I suspect that it has something to do with studying a species that doesn’t fit the binary of what we expect to see in nature, with completely different males and females."

@carlzimmer.com profiles my wonderful coauthor @jjinsing.bsky.social Gift link.

Smithsonian Acquires Exceptionally Complete Skull of Iconic Dome-Headed Dinosaur

Pachycephalosaurus sold at auction donated to NMNH, will be on display next week
www.si.edu/newsdesk/rel...

This is such a great idea!

An abstract looking archaeopteryx on a plain green background

A mischievous archaeopteryx has appeared!

Megacerops was a large ungulate from the White River Formation (38-33 million years ago) of the Midwest in the US. They resembled Rhinoceros, but had bony nasal horns that were covered by skin, not a keratin horn!
#paleoart
#fossilart

Mega Dragonite
Done in procreate as an unintentional 1hr speed paint
#pokemon #dragonite #megaevolution #pokemonAZ

A Tyrannosaurid tooth, with serrations and partial root. Next to a scale of one inch increments.

A metasequoia seed cone sitting next to a dinosaur tail tendon fossil. Next to a scale of one inch increments.

A collection of microfossils, from left to right: a crocodilian crushing tooth from a brachychampsa, a bowfin fish jaw section, two freshwater ray teeth from Myledaphus, and a vertebra from a gar fish. Next to a scale of one inch increments.

A chunk of Amber, crystallized from tree sap. Next to a scale of one inch increments.

Here are some of the fossil finds from this year’s dig season: the crown jewel being a Tyrannosaurid tooth. Also shown are a Metasequoia cone, a fossil tendon, a crocodilian tooth, and some freshwater ray crushing teeth, plus some amber!

Full slab view of a Primobucco, a type of roller-like bird, from the green river formation.

Zoom in of the head of a Primobucco, a type of roller-like bird, from the green river formation.

Image of a modern roller bird, the long-tailed ground-roller. © Nigel Voaden

A “before” image of the Primobucco specimen.

My first big bird project is done! I’m excited to show you all this bird that took me so long - at least a few months! This guy comes from the green river formation and is the most common bird found there: Primobucco mcgrewi.

Here are the answers to today’s #findthefossil! Some of the suspicious looking bits are actually dead sagebrush leaves. Included in the mix here are turtle bits, various dinosaur chunks, and maybe some crocodilian bone pieces. I’ll try to post some more of these challenges in the future!

Here’s a game for y’all!
I have a picture with fossils in a “float” deposit, where they’ve been washed out of the rock and precipitated out in the ground in the hell creek formation! Let’s see how many you can spot! I’ll post the answer in a little bit! Instead of #findthatlizard , #findthatfossil !

A western harvester ant in Montana

An overhead view of a harvester ant hill, which includes bones of a small animal

Another harvester ant hill with abundant white gypsum crystals included

It’s time for: a creature spotlight!

On the ranch where the crew and I dig every year, there are harvester ants that gather and sort small sediment for their hills! They are known to grab small microfossils (like teeth) and small bits for their hills, including bones!

A plume of a distant wildfire in makoshika state park

A prickly pear cactus mid bloom in Montana

A prairie rattlesnake, mid-shed, perched on a dry creek bed bank in Montana

A Least Chipmunk in the brush in Montana

I’m alive!! I had the wildest field session this year, including a brush with a wildfire and some cool wildlife! Stay tuned for photos of the stuff I found on my dinosaur dig this year!

This makes me sick... and angry. 😡

It’s so cute 😭😭

Noooo a legend 😭

The majority of the bone fragment haul. Also included in the picture is a Primobucco cast I painted myself and a doormat that desperately needs to be painted.

A closeup of the nicer rex bits, toothbrush for scale

Gonna be cleaning some scraggly T. rex bits to sell in my shop at some point. Keep an eye out! Hopefully I can get them listed before I head out on this year’s trip! Unfortunately, these bits aren’t worth salvaging as an entire specimen due to how much weathering had been done to it.
#hellcreek

Bothriolepis on the brain

It’s a great blue heron!

The micro texture on a jawless fish from the Devonian of Pennsylvania.

Zoomed out on a jawless fish fin covering from the Devonian of Pennsylvania.

A micro texture on a placoderm fish from presumably the red hill deposits in PA. So cool to see these up close!

The keel (chest), humeri (upper arms), and ribs of a large bird from the green river formation of Wyoming, ~50 mya

A second bird! Likely a larger waterfowl like presbyornis. Sources from the green river formation.

Instead of believing the myth that three expensive, genetically modified wolves are “de-extinct” dire wolves, let’s look at animals humanity has actually brought back from the brink of extinction using proven science and dedicated hard work: 🧵/6

Extinction is forever: de-extinction can’t save what we had | Aeon Ideas Even if it works, genetic resuscitation would begin something new; it can’t restore what we lost. Extinction is forever

I wrote this nine years ago 😭

Cretaceous gar scales in a floating frame

A chunk of Cretaceous petrified wood

A chunk of Cretaceous petrified wood

A chunk of Cretaceous petrified wood

I’m moving! I’ve put up a limited time 20% off sale to help get some stock moving in my €tsy shop! Here’s a brief look at my items:

Things have been rough these past few weeks, my apologies for the lack of posts! I’ll be updating y’all on some cool personal projects here in the next few days!

Not every day you see an allosaurus skull rubber banded up for repairs 😂

There’s a mean skunk outside our bedroom that has sprayed twice this past year… it’s surprisingly difficult to fall asleep to skunk smell.

A pachyceohalosaurus I drew while at #paleofest!
It was a blast meeting and seeing so many people I look up to!
This guy is based off the skull model in the Burpee Museum in Jane the Juvenile Rex room!

I’ll be heading in bright and early!

Spherotholus and Kulindadromeus,
Done in inks and marker.
I’m available to do others for commissions!
#paleoart #ink