Not a dinosaur? It must have been a great surprise to find the skull of an ancient animal with very big teeth in PEI back in 1845! Sphenacodontids are non-mammalian synapsids, large terrestrial vertebrates that lived before the dinosaurs during the Permian Period.

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Project Praya Thread 5:
While vertebrates are the dominant terrestrial animals they are not the only rulers of Praya, the Skaravaitheres are a clade similar to vertebrates but evolving completely independent

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"Neotropical fish alone make up 10% of all vertebrates on Earth."
🤙

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Mammal reveal, meet the Gomble, a buckchisel tooth multituberculate that lives a generalist omnivorous lifestyle with a diet mainly consisting of invertebrates like eusocial insects https://t.co/LNtk3AV14W

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Your ancestors were (very likely) four eyed freaks. There's evidence among the earliest vertebrates of two "optical" eyes, and two parietal eyes that sensed light/dark states and secreted hormones appropriately.

One of them "became" your brain's pineal gland.

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Auroramamongus longirostris is a medium sized neoamongoid that lives in cuba and the carribean islands. it specializes in rooting up insect colonies and using its filimented arm to rake up the invertebrates.

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Ichthyornis has a peculiar sternum with highly crossed coracoid sulci. Skeletal asymmetry, while uncommon in vertebrates, it is challenging for retrodeformation. However, using our new workflow we were able to reconstruct the complete sternum including the asymmetrical parts 10/n

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“All Creatures Great & Small” Limited edition print, celebrating colour, texture, shape & diversity in the wonderful world of invertebrates. https://t.co/of3Wdgrgmo

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“Burying beetles are true to their name—they bury the carcasses of small vertebrates such as birds and rodents as a food source for their larvae.”

https://t.co/Ne4IWeAm7N

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“All Creatures Great & Small”. Limited edition print of incredible invertebrates - Living treasures. 💚#MHHSBD https://t.co/Z2fRJ6m5qa

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Did you know that among vertebrates, only chameleons are known to have a bony airborne sound receiver? Learn more about research on the chameleon atympanic middle ear by here:
https://t.co/9YuQvrjby5

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hundreds of millions of years ago, a fish evolved to be able to survive on land, and would go on to evolve into all known vertebrates (mammals, birds, lizards etc) and even more millions later, land mammals somewhat resembling dogs would re-evolve for aquatic life (dolphs+whales)

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time- How much do you know about Gigatitan vulgaris?

Gigatitan is a giant (30~40cm wingspan) insect from Triassic Kyrgyzstan. It was a predator with a large mandibles and spiky legs, and may have eaten not only other insects but also small vertebrates.

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In the monograph, it was stated that the bulk of Q. lawsoni were found in a single site- an abandoned channel lake, a body of water cut off from the rest of the floodplain. Because the absence of aquatic vertebrates but abundance of invertebrates, it was posited that...

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Happy New Year!
Here are my favourite invertebrates I photographed in the Northern Territory in 2021. Hopefully we can find some more interesting and colourful ones this year!

What do you want to see more of from me in 2022?

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in the spirit of sonic here are some sonic nudibranch ocs i made for fun while studying invertebrates :)

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Some Snulg world vertebrates, they fill various ecological niches

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Open our advent calendar today to see one of the world's oldest living vertebrates swimming through 👵🐟 Do you know what it is? 🤔 Test your ID skills with our daily quiz question to find out. https://t.co/IpZWzw4BTC

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Amazing live virtual drawing session of invertebrates with Ennis in Malaysia and his insect collection from Malaysia and Africa through of Elephant in the Room ng. Magical creatures.

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So, you guys know the whole carcinization meme, where ocean arthropods conveniently keep adapting into the crab body plan?

I propose the same thing for land vertebrates and the Mega-sloth body plan.

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