#(Cretaceous-Paleogene extinction event)

[shakibone]

CAN THOG GET YOU SOMETHING TO EAT?

Oh, I dunno, maybe 76% of all species on the planet including all non-avian dinosaurs...?

THOG KNOW! KEVIN IS CRETACEOUS- PALEOGENE EXTINCTION EVENT!

Do you think maybe you got rejected from all those comedy troupes, not from a lack of being funny, but because you look like a schlubby white dude named "mason" but you identify as a woman? I think maybe you make normal people uncomfortable because you're gross to look at but saccharine in a way that makes it feel like you're trying to downplay your ooga-booga caveman ass appearance and it just makes you unsettling.

Now see, THIS is hate mail. This is some prime time shit. Actually trying to get at me. Referencing the time I got turned down from an improv club, that's a deep cut. I can tell you've been on the hater grind for a while now with that one, which i can respect. However, you lost me at the caveman appearance. If you're so keen on making true callbacks, you'd know I already received hate mail comparing me to a neanderthal a couple of days ago and should know by now that comparing me to a caveman is fruitless because i think they fucking rock and now im imagining a caveman in an improv club and it's actually a really sick thought. i shouuld fucking draw that. wait hold on.

yeah wait this owns fuck whatever you were talking about im thinking about thog now. i think he always messes up zip zap zop but his improv troupe loves him anyway and he's really good at the physical comedy side of things

[stone-cold-groove]

The wonderful inhabitants of the salt lake basin in early periods.

[phaltu]

turned 30 today #whack

[transgabalus]

avian dinosaurs 👇

[wren-of-the-woods]

Yes!! This! And I love that they have such dramatic names, too — the Oxygen Catastrophe is great, and the End-Permian Mass Extinctions is colloquially known as the Great Dying.

end permian mass extinction...at least we don't have to deal with "Lava sea the size of Saudi Arabia"

[ultrainfinitepit]

Postcard illustration for the Angelology IV campaign. I tried something new and made this one in a lineless style.

For this piece I was inspired by the Chicxulub Asteroid, which caused the Cretaceous-Paleogene extinction event - aka. extinction of the dinosaurs.

When I learned about it, it was in the context of learning about the K-T boundary, a geological marker with high iridium levels. I think it's very cool that we can see such an impactful event in the geological record across the world. I was even lucky enough to visit a site where I could see the boundary in-person! This was back when I was studying geology. All part of my complex and mysterious backstory ahahahaha! Anyway, rocks are cool, and I hope you like my artwork.

[a-dinosaur-a-day]

Quaternary includes both the Pleistocene and Holocene extinction pulses, even though the first may not be entirely anthropogenic

I’m not including the great oxygenation event because that is the least clear in terms of whether or not it actually was an extinction

[miscellaneoussmp]

Quick addition to my paleontology analysis because I'm a nerd and I need to get across how fucking old Badboyhalo is!!!

Bad is at least as old as the Cretaceous-Paleogene (K-Pg/K-T) mass extinction! This is the extinction event that killed off all of the Non-Avian dinosaurs! In total, it killed about 60 to 70% of all species on earth! This happened around 66 million years ago!

Bad is also possibly as old as the Permian-Triassic mass extinction, then he would have also been around for the Triassic-Jurassic mass extinction event. This extinction event killed off about 80% of all species on earth! It happened around 201.3 million years ago!

Bad might be as old as the Permian-Triassic mass extinction event! This extinction event killed off about 90% of all species on earth! It is the largest known mass extinction event! This happened around 251.9 million years ago!

That is at least one mass extinction event that Bad would have been around for!!!

[jfs-worldbuilding-and-art]

Specposium's Spectember day 27: Revamp the dinosauroid

The dinosauroid was a dinosaur species created by Dale A. Russell in 1982. Russell theorized that if a dinosaur such as Stenonychosaurus had not perished in the Cretaceous–Paleogene extinction event, its descendants might have evolved to fill the same ecological niche as humans. Or in other words sapient dinosaurs. It was very anthropocentric and had a human-like bodyplan, something doubtful.

So here we have my take on the dinosauroid, a small theropod with digging habits. It is very smart because it has a complex social system and also need to overcome its prey in their burrows and its predators. It has lost its arms as they weren't useful for digging instead evolving robust claws and a short body.

[tmkeesey]

Chart with PhyloPic silhouettes from an essay in the upcoming comic book, Paleocene #4. These are lineages that survived the Cretaceous–Paleogene extinction event but died out before the Holocene Epoch (which is almost too brief to be visible here—it is a thin sliver atop the Pleistocene). Figures are not to scale, and do not line up perfectly to lineage extinction dates, just to epochs. This chart is available under the CC BY-SA 3.0 license.

For more information about the silhouettes in the chart, see: https://www.phylopic.org/.../7dc1ae186d11d8c2ad9f502fc47d...

For more about the comic book, see https://www.kickstarter.com/projects/keesey/paleocene-4-comic-book

[dougdimmadodo]

August's Fossil of the Month - Gastornis (Gastornis spp.)

Family: Gastornis Family (Gastornithidae)

Time Period: Early Paleogene (55-40 Million Years Ago)

Roughly 66 million years ago, the Cretaceous period ended in a sudden mass extinction event known as the Cretaceous-Paleogene Extinction Event in which as many as 75% of all terrestrial animal and plant species went extinct, with the vast majority of large animals (specifically most species weighing more than 25kg/55lbs, including all non-avian dinosaurs) being among the most notable losses. Following this massive plummet in biodiversity the relatively small number of species that survived into the earth's next geological period, the Paleogene, were left to "inherit the earth", and as environmental conditions stabilised and the surviving plant species began to diversify and become more prominent, an increase in the availability of food allowed the descendants of the extinction event's survivors to gradually grow to larger sizes. The members of the genus Gastornis are examples of animals that took advantage of this new opportunity; thought to be descended from small duck or pheasant-like animals, Gastornis species were enormous flightless birds (with the largest species, Gastornis gigantea, growing to be up to 2 meters/6.5 feet tall) with long legs and muscular necks supporting huge, powerful beaks, the purpose of which has been the subject of extensive debate - historically it was suggested that the presumably powerful legs and bill of Gastornis species were adaptations that aided them in pursuing, catching and killing the many smaller herbivorous mammals with which they coexisted, but following the discovery of more complete fossils (which show that species in this genus lacked the powerful claws and sharp-tipped beak seen in most modern carnivorous birds, and which contained trace minerals more common in the bones of herbivores than those of carnivores,) it is now generally believed that Gastornis species were likely herbivorous, with their huge beaks allowing them to break open hard-shelled fruits and seeds in a manner comparable to that seen in modern macaws and cockatoos. Gastornis fossils have been found across Asia, Europe and North America (having presumably used land bridges to spread between continents,) all of which would have been warmer and more humid than today at the time, allowing for the growth of dense rainforests that would have provided abundant food for a large browsing herbivore; as the Paleogene period progressed the climate became progressively warmer and drier and rainforests became rarer, likely contributing to the eventual extinction of Gastornis species. The name Gastornis translates roughly to "Gaston's Bird", honouring the French physicist Gaston Planté who is credited with having discovered the first known Gastornis fossils in a mine in Meudon, France in 1855.

--------------------------------------------------------------------------Image Source: tps://commons.wikimedia.org/wiki/File:Gastornis,_a_large_flightless_bird_from_the_Eocene_of_Wyoming.jpg

[ntls-24722]

Most of what I made today was stuff for Drohnen so I'm putting Skinny DJMM first

This won't be canon, but I gave him eyelids to see how he'd look with them. Skinny DJMM doesn't have eyelids and is constantly as wide-eyed as actual DJMM, but he is far more chill than what his permanent expression would have you believe.

Comids across multiple environments! They don't exactly have set subspecies like immobiles and they're extremely diverse on account of the shapeshifting but it'd be dumb not to try to catalogue them.

Comids nor Immobiles can naturally grow hair, but nothing about comids are natural - so, the polar ones have an impressive shaggy coat, and also tend to sport hunting implements, as polar comids and immobiles are obligate carnivores, and feast mainly on their "whales."

I already retconned something about the babies 😭 They do have fewer teeth as infants but they're also stubby and less straight.

@croissantlune201 #those bebes are prob smarter than me but it ok

They are not! They're dumb little infants.

Though, those tags made me think of how it would be if someone DID try to adopt and raise a Drohnen resident from birth.

They'd be SUPER stunted in growth not just because of Earth's gravity but also because of, essentially, Drohnen Scurvy. They're already hard to feed with how much they eat and the amount of hard metals they need, but there's also the problems of which hard metals, one of the most vital being iridium.

Drohnen had a mass extinction event where almost a third of their planet literally got obliterated right off, and the entire planet was showered with the iridium debris much like how there was an iridium layer over the Earth after the Cretaceous-Paleogene extinction event. Their ancestors made life that soaked that right up, to the flora and the fauna.

However, iridium isn't as present in Earth plant life as it is on Drohnen (the only thing i found that had it was ginger? with 0.00006 mg per 100 g??? tf is going on with ginger) (also some pet food apparently) and with it being a part of their bone and outer shells, it's... bad to be without it.

Bonus Fae!

[dogtoling]

Ok well it took a stupid amount of time (several hours!!!) but the blog has been cleaned up. I mostly kept any substantial headcanon asks, posts, random essays and other stuff in that general category. Those posts are now under the tag #archive. So for people who are here for headcanons, those should be extremely easy and mostly clutter-free to find now (though I probably missed some, and some posts more than likely got axed by mistake, I didn't go through the effort to click on every single thing to see what it was).

Not sure what the activity level will be here going forward? I'll definitely answer asks, haven't made a decision on pretty much anything else lol. I'll be posting my OCs elsewhere and that blog will be announced here whenever i get the worldbuilding to a point that I can actually start doing it! (worldbuilding is NOT simple if you're a science and accuracy freak like me. ive spent the whole week learning about plate tectonics and hadley cells and the function of ocean currents and the Cretaceous-Paleogene extinction event and the chemistry of the ozone layer. and trying to figure out how the FUCK to make rats extinct. I hate it here)

Also, undecided verdict on the essay i have on Splatoon story modes. It's something I was originally going to make into a video essay, then decided not to, but it's something that definitely belongs on this blog so there's the chance I will, at some point, edit it into proper reading form and post it. But that would be a LOT to read so idk... undecided.

now i'm going to go make dinner because it's 6pm. somehow.

[supermaks]

Never have I seen a man win a race not despite but BECAUSE someone drove into him. Max verstappen everyone

[devilish-parrot]

Dinosaurs are a diverse group of reptiles[note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya and their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record shows that birds are feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event. Are these words in Tally Hall?

Dinosaurs are a diverse group of reptiles[note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya and their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record shows that birds are feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event.

[mousseeme]

🦕

Sauropoda :

Ze oldest known unequivocal sauropod dinosaurs are known from the Early Jurassic.[5] Isanosaurus and Antetonitrus were originally described as Triassic sauropods,[6][7] but their age, and in the case of Antetonitrus also its sauropod status, were subsequently questioned.[8][5][9] Sauropod-like sauropodomorph tracks from the Fleming Fjord Formation (Greenland) might, however, indicate the occurrence of the group in the Late Triassic.[5] By the Late Jurassic (150 million years ago), sauropods had become widespread (especially the diplodocids and brachiosaurids). By the Late Cretaceous, one group of sauropods, the titanosaurs, had replaced all others and had a near-global distribution. However, as with all other non-avian dinosaurs alive at the time, the titanosaurs died out in the Cretaceous–Paleogene extinction event. Fossilised remains of sauropods have been found on every continent, including Antarctica.[10][11][12][13]

The name Sauropoda was coined by Othniel Charles Marsh in 1878, and is derived from Ancient Greek, meaning "lizard foot".[14] Sauropods are one of the most recognizable groups of dinosaurs, and have become a fixture in popular culture due to their impressive size.

Complete sauropod fossil finds are extremely rare. Many species, especially the largest, are known only from isolated and disarticulated bones. Many near-complete specimens lack heads, tail tips and limbs!?