#eusthenopteron

[alex-fictus]

The Fish-o-Pods!

Thanks to these guys you get to vote and pay taxes. What a world! It may not a direct lineage of fish -> fish-o-pod -> not a fish like we see in some diagrams; some of these guys may have lived too close in time to one another to be direct relatives. They do show the progression of lobe finned fishes (like Eusthenopteron) to more land oriented creatures (like Ichthyostega) Stickers here!

Free Phone Wallpaper Links: Eusthenopteron - Acanthostega Tiktaalik Hynerpeton - Ichthyostega

[mokeonn]

Eusthenopteron in hats

[blaiddydsaurus]

Some devonian fellas

[newlabdakos]

Eusthenopteron

(size: 1.5 to 2.1 m / 4.9 to 6.9 '; temporal range: 385 mio. years ago)

[text from the Wikipedia article, see also link above]

Eusthenopteron (from Greek: εὖ eû, 'good', Greek: σθένος sthénos, 'strength', and Greek: πτερόν pteron 'wing' or 'fin')[2] is a genus of prehistoric sarcopterygian (often called lobe-finned fishes) which has attained an iconic status from its close relationships to tetrapods. Early depictions of this animal show it emerging onto land; however, paleontologists now widely agree that it was a strictly aquatic animal.[3] The genus Eusthenopteron is known from several species that lived during the Late Devonian period, about 385 million years ago. Eusthenopteron was first described by J. F. Whiteaves in 1881, as part of a large collection of fishes from Miguasha, Quebec.[4] Some 2,000 Eusthenopteron specimens have been collected from Miguasha, one of which was the object of intensely detailed study and several papers from the 1940s to the 1990s by paleoichthyologistErik Jarvik.

[he-who-needs-to-be-silenced]

By the way if I continue the series in Canada it’ll mostly be fish

I have hit 1k notes on one of my posts 🎉🎉

[simdertalia]

🔍🦎 ACNH Museum Fossils Set 4 🦖🔍

Sims 4, base game compatible. 26 items

I hope you enjoy!

Always suggested: bb.objects ON, it makes placing items much easier. For further placement tweaking, check out the TOOL mod.

Set Contains: Buy: -Acanthostega | 1 swatch | 924 poly -Amber (mosquito inside) | 2 swatches | 869 poly -Ammonoidea | 1 swatch | 610 poly -Anomalocaris | 1 swatch | 734 poly -Archaeopteryx | 1 swatch | 1622 poly -Australopithecus | 1 swatch | 418 poly -Coelacanth Display | 1 swatch | 1398 poly -Coprolite | 1 swatch | 654 poly -Dino Track | 1 swatch | 1044 poly -Display Cloche | 1 swatch | 964 poly -Display Info 1 & 2 | 4 swatches each | 370 poly each -Display Pedestal | 3 swatches | 38 poly -Display Table | 2 swatches | 782 poly -Doorway Sign | 2 swatches | 150 poly -Emergency Exit Sign (glows) | 4 swatches | 112 poly -Eusthenopteron | 1 swatch | 1368 poly -Juramaia | 1 swatch | 810 poly -Meteor Ceiling Decor | 1 swatch | 471 poly -Myllokunmingia | 1 swatch | 410 poly -Shark Display | 1 swatch | 2170 poly -Shark Tooth Pattern | 1 swatch | 800 poly -Trilobite | 1 swatch | 1011 poly -Wall Object (with red light) | 2 swatches (one for green light) | 508 poly -Wall Vents | 1 swatch | 262 poly

Build: Floor: Rubber | 6 swatches | Linoleum & Misc

📁 Download all or pick & choose (SFS, No Ads): https://simfileshare.net/folder/212575/

📁 Alt Mega Download (still no ads): https://mega.nz/folder/4hxFkQga#7L92mwjA25qUP_Qi7pMH5g

📁 Download On Patreon

Will be public on March 9th, 2024 💗

Happy Simming! ✨ Some of my sets will be early access from now on. If you like my work, please consider supporting me:

★ Patreon  🎉 ❤️ |★ Ko-Fi  ☕️  ❤️ ★ Instagram📷

Thank you for reblogging ❤️ ❤️ ❤️

@sssvitlanz  @maxismatchccworld @mmoutfitters  @coffee-cc-finds  @itsjessicaccfinds  @gamommypeach  @stargazer-sims-finds  @khelga68  @suricringe  @vaporwavesims  @mystictrance15 @moonglitchccfinds @xlost-in-wonderlandx @jbthedisabledvet @public-ccfinds

-Museum Fossils Set 1 (public from day of post) -Museum Fossils Set 2 (public from day of post) -Museum Fossils Set 3 (public at midnight tonight) -Pamphlet Holder from Reiki Set ☄️Don’t forget the meteor impact display!

The rest of my CC

[mineralsrocksandfossiltalks]

Monday Musings: From Fins to Feet

About 131 million years after the first fishes appeared, the first tetrapod climbed on to dry land. Tetrapods are animals with four weight-bearing limbs (among other things but we're here to discuss limbs). Amphibians, reptiles,

birds, and mammals are all tetrapods. Yes, you are a tetrapod.

So where did all the tetrapods come from? Fish of course! You are a very, very derived fish.

And those poor fish had a lot of hurdles to jump before they could exploit the resources on dry land. The biggest one was how the heck they were going to move around up there. Fish cannot support their own weight, there's no need when the water does it for you.

In fact, marine animals in general use the water for support and will suffocate under their own body weight if beached. Water is one of the reasons whales can get so big while land animals are limited.

Skeletons had to make some major changes before they could be useful out of the water. The vertebral column of fish are adapted for the stresses of lateral stretching during swimming.

For a tetrapod, the main force acting on it is gravity. This means the backbone needs to be modified to keep the body from sagging between the limbs like a pair of overlarge pants not held up properly by a belt. (I mean, our ancestors went through a lot of effort to lengthen the limbs to make walking easier and some people go and sag their pants like the wish to be fish all over again.)

Not only must the spine be altered but so must the fins. They simply can't support weight let alone move that weight anywhere. That's not what they were evolved for.

Sarcopterygian fishes, also known as lobe-finned fishes, developed early arm bones in their fins, bones other fishes lack. This allowed them to pull themselves across land (whether that was underwater or not) much like an army crawl.

Eusthenopteron foordi is one such fish. Part of the family Tristichopteridae, it possessed very early forms of the modern tetrapod arm and leg. Its front fin was attached to the back of the skull and the limb bones were very short. These two characters combined to make movement of the front fin very limited.

Another lobe-finned fish of note is Panderichthys rhombolepis.

Its humerus was nearly twice the length of Eusthenopteron's and its radius was longer and wider, while its carpals shrunk.

Its humerus was also held more horizontally than vertically, closer to the tetrapod state. However, its pelvic girdle was less derived than Eusthenopteron.

The final sarcopterygian that nailed some of the transition from fully aquatic to partially aquatic was Tiktaalik roseae.

It has very robust bones in the pectoral fins, good for eventual bearing weight. However, it still retained the fish-like metapterygial axis, a line of bones which the fin radiates around.

It didn't quite have a wrist yet, but its fin was flexible like a wrist which may have helped anchor it in fast currents. Although not entirely preserved, the hind limbs were nearly as long as the front limbs, a tetrapod trait.

Then came the stem-tetrapod, Acanthostega gunnari. It possessed four limbs but the front limbs could not bend forward at the elbow and therefore could not be put in the weight-bearing position. Another remarkable thing about its feet was that it had eight toes! EIGHT! Seems a bit excessive if you ask me.

It's pelvic girdle was fused with the sacral ribs of the vertebral column which was novel for the time. (The pelvic girdle is unattached even from itself in fish.)

Finally, we have Ichthyostega stensioei. It had four robust limbs that could actually support its body on land for a short time.

And that is how vertebrates transitioned from water to land...at least as we know it right now. Tune in tomorrow for some trivia! Fossilize you later!

[informationisinteresting]

Tiktaalik is such an important fossil species! Studying this species along with Acanthostega, Eusthenopteron, Ichthyostega, and Panderichthys. We can better understand the sea to land transition that took place so long ago!

[dykegeology]

eusthenopteron I live you but I think next time I will draw a catfish shark ray chimera skate moray eel sturgeon paddlefish sailfifn blennie combtooth blennie hagfish or perhaps lamprey

[kdinjenzen]

GOOD NEWS! Guess what the fish were able to do!

[id: An image showcasing the cladogram of the evolution of tetrapods showing some of the best-known transitional fossils. It starts with Eusthenopteron at the bottom, indisputably still a fish, through Panderichthys, Tiktaalik, Acanthostega and Ichthyostega to Pederpes at the top, indisputably a tetrapod.]

“If tumblr shut down what other social media would u use” you are literally asking a fish what it would do if all the water in the world dried and it had to live on land

[alex-fictus]

Fish of the Paleozoic! ... holy lobe fins, I have so many Paleozoic fish xD

Find these and fish from the Mesozoic and Cenozoic in my Ancient Fish Listing!!

Sacabambaspis - Astraspis - Birkenia

Eusthenopteron - Bothriolepis - Cephalaspis

Materpiscis - Titanichthys - Dunkleosteus

Hyneria - Rhizodus - Coelocanthus

Shop || Phone Wallpapers

[gatorize]

eusthenopteron before they Cut Her Up

[antiqueanimals]

From Prehistoric Animals, written/illustrated by William E. Scheele. 1954.

1.) Eusthenopteron

2.) Dipterus

[ouzel-time]

Eusthenopteron, my beloved

rediscovering ray troll's art in my fish era is such a delight. that guy makes art that sounds like his name. he was so right about fish worship

[encyclopika]

Animal Crossing Fish - Explained #133

Brought to you by a marine biologist who is the big dumb...

CLICK HERE FOR THE AC FISH EXPLAINED MASTERPOST!

I am so dumb. I said the trilobite was the last fossil because I evidently forgot we didn’t actually cover this dude yet. Now everything is ruined. Oh well. So, today we will be the last fossil we are covering for real- Eusthenopteron.

It’s a long name, I know, but you can do it. -> yoos-then-OP-tare-on.

At the beginning of this series, when we spoke about the Coelacanth, we talked about tetrapod evolution, which is a wild ride. Chordata, the Phylum we as humans belong, is pretty awesome. We had such humble beginnings, and by now we have consistently been most of the largest organisms to ever grace this planet, right after the plants. Between dinosaurs, whales, and some sizeable fish, chordates, and more specifically, vertebrates, have dominated in size. We also have dominated ecosystems ever since we evolved jaws and began preying really efficiently on everything else, including each other. Although we have almost never been the first at anything major - we weren’t the first predators and we certainly weren’t the first on land - we have done it really well anyway. 

We talked about how tetrapods - four-legged vertebrates - came to be via evolution from the fish body plan. Eusthenopteron is just one species within that transition. It, as well as Acanthostega and the Coelacanth, are lobe-finned fish, fish that actually have supporting bone in their fins, which eventually evolved into the sturdy arms and legs of tetrapods we see today. The fossil in ACNH is most likely based off this one of Eusthenopteron foordi, a really great fossil that preserved the whole fish since the Devonian (some 385 million years ago). 

By Haplochromis, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=6532784

Here’s what it might have looked like in life.

By Dr. Günter Bechly - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=17059501

Is now a good time to talk about how all tetrapods, including you and me, are just really weird fish? Cladistically-speaking, we are all just fish. These days, it’s easy to separate fish from other vertebrates - they have gills and live their lives restricted to the water. If you look back to the Devonian, however, the line between fish and other tetrapods is blurred. The animals we collectively call “fish” are VERY DISTANTLY related to each other as a whole. You and your cat are so much more closely related than a goldfish is to a shark. Likewise, you and the goldfish are also more closely related to each other than either is to the shark. See where it gets weird? 

In phylogeny, we try very hard to keep groups of animals monophyletic - this is a big word that means a group of organisms includes their common ancestor and every one of its descendent species. For instance, the group “Mammalia” is monophyletic, because the term encompasses all mammals, no matter how derived, like the whales. In contrast, a paraphyletic group is one in which an ancestor is grouped with only some of its descendants, typically with one very derived group simply left out. “Reptilia” aka the reptiles, are a great example of a paraphyletic group, because the term includes all reptiles (crocodiles, lizards, snakes, dinosaurs) except for the birds, who are still dinosaurs, but because they do the flying and feather thing, we’ve set them apart specially. “Fish” as a group, include all fish, except for the very special lobe-finned fish group, the tetrapods. ‘Fish” is, therefore paraphyletic, as a term. Obviously, we can decide that we are fine with the term “fish” meaning only vertebrates that have gills and live in water, for every-day means...but it’s fascinating to just delve into this clusterfuck of terms we made before we knew just how connected life on Earth really is.

And there you have it. Fascinating stuff, no?

[werewolfgimmic]

eusthenopteron and tiktaalik do a set at a bar call that a conical stand up