there's a lot of discussion on here about the structural evolution of feathers in dinosaurs (though tbf we have a lot more to go off of there), and about what synapsids had hair and how we know. but what do we know about how the evolutionary origins of hair looked?

i mean, hair is remarkably complex especially when it comes to its interactions with other components of the skin. without any transitional synapsid skin impressions (that i know of) to give us a hint at how "proto-hair" mightve looked, whats the state of the art when it comes to reconstructing the first follicles?

What species today is niche partitioned by age? It seems to be a common explanation for significant morphological differences between adults and juveniles but I can’t seem to think of any modern species where this rings true

The velociraptor is known for its claws and its sound, I forgot what its called that produces the sound but paleontologist found no trace of said sound chamber in its snout, also in the jurassic franchise it shows velociraptors from 5 to 6 feet, this is inaccurate because there are actually 2 feet or 3 feet tall still being deadly.

As you know the velociraptor uses a special nail to cut through flesh, the vocal bone in the raptors snout produces a sound to alert other velociraptors, or so we thought, paleontologist discovered that there was not record of said vocal bone and velociraptor aren't 5 to 6 feet tall like in the jurassic franchise days, it is actually 2 or 3 feet tall.

Hey! This thought just popped into my head, and has been bothering me all day. I always thought that the only group of dinosaurs that has proof of feathers (not counting quills) were dromaeosaurids. Is there any proof that any therizinosaurids have feathers? (Image from Britannica Encyclopedia).

I am talking to a girl who really likes mistery, and i thought i could tell her about that little marine organism that has left many footprints millions of years ago, that is, we only know its footprint, but nothing about its appearance, and still, it continues to leave footprints everywhere, but we have no idea what it looked like, I'm not an expert in paleontology, but I remember it as something interesting and perfect for this occasion, sorry for my bad engish

In Walking with Beast there a scene where it depicts Megatherium as a giant bear that ate meat sometimes. I wonder what evidence did they thought that made Megatherium an omnivore? And it raises another question. Were there meat eating Ground Sloths?

Alot of people when they think of Trilobites, even among the paleocommunity, they think of them being one species or a small group. But in reality there were 11 whole orders. Of these which are your favorite? For me it's a tie between the Asaphida and Phacopida. They just had so many wonderful forms

Here's a good video series for those interested in learning more about the group especially the different orders

https://www.youtube.com/watch?v=nO3-qFpS0os&

https://www.youtube.com/playlist?list=PLma2p4kAzkHuvn8XlSZ3AJVjA636YO-lb

Cats disrupt a lot of modern ecosystems. They might take over any small mammal/bird/insect hunting niches. Larger ones could prey on newly hatched dinosaurs.

Monkeys/apes might not have as many predators, given dinosaurs would have difficulties climbing vs modern predators.

Modern herbivores might cause disruptions. Kangaroos, deer, rabbits, giraffes etc. They'd be faster then most predator dinosaurs and might outcompete slower herbivores.

The orca could dominate the sea, as there'd be plenty of large animals to go after.

It’s just a 6 foot turkey😒

(Art featured in this post is not mine!)

When i first looked into it it was 4. Birds, bats, pteranodons, and insects.

It appears that insects are still the only invertebrates which have ever flown.

But apparently several other bird-like therapods had evolved powered flight before the KPG, people theorize that bats evolved flight twice, and some people even think tinamou evolved from a flightless rattite.

It’s day 2, the day after Thanksgiving. Hope everyone enjoyed theirs 🦃. Today’s focus will be on removing the rest of the protruding matrix. Once that is done, I’ll come back around and work on the exposed bone.