andmaybegayer:

vintar:

vassraptor:

vintar:

i’m reading a book on spider biology and here’s some things i’ve learnt so far

  • they can’t move their eyes so when they need to focus on something they move their retinas independently of the rest of the eye instead and i can’t precisely pinpoint why this creeps me out but it does
image
  • i mean just look at that
  • they have two main eyes and the rest are secondary
  • which deeply upsets me because there’s quite a few six-eyed spiders and this wasn’t weird when it was just going from a larger number to an arbitrary smaller number, but knowing that they’ve got six because they decided to jettison their main eyes and run on backups is much much weirder
image
  • wolf spiders have the best goofy little monster faces. this isn’t

    strictly

    a biology fact but it’s still true

  • big spiders have 30-40 heartbeats per minute and lil dudes can have up to 100
  • their arteries run from the heart, into the chest, and down their legs, and then they open up and dump their blood in their feet. just right in there. let it slosh around. that’s all you need from a circulatory system, right.
  • their blood sloshes around and eventually winds up at the lowest point of their bodies, where their lungs slurp up all that loose blood and shove it back into the heart
  • instead of being made in bone marrow or anything, their blood cells just bud directly off of the heart muscle into the bloodstream
  • they can taste with their feet but not their mouths
  • god spiders are weird

thanks to this post i just looked up spider anatomy on wikipedia (actually i did a search for “spider organs” on duckduckgo and that’s what came up first) and it was even weirder than i imagined, their heart looks like WHAT? and did i misunderstand the diagram or do they have intestines running down all their legs? anyway a+++ would recommend

i get the gist that if there’s something that makes you go “that can’t be right” wrt spiders, it absolutely is right

image

mgd is midgut branches and lmao yep they poke down into the leg segments sometimes (or, as in friend jumping spider in fig b, up surrounding the eyes…….)

image
image

their hearts are just tubes! big tubes! so big that you can see them from the outside!!

there’s so much happening inside spiders, who authorised this

Most arthropods have /hilarious/ circulatory systems because a significant chunk of it is “toss the organs in a pool of oxygen enriched blood and hope that works out”

big bones don’t lie – griffins

ahjareyn:

brokenbuttbones:

skittlesfairy:

toffeecape:

awed-frog:

[If you found my blog because you’re curious about Greek people mixing up prehistoric bears and demigods, this post is for you. I studied archaeology with a focus on other things, and the research on this topic goes back decades, but imo the best book on how dinosaur bones influenced mythology is Adrienne Mayor’s The First Fossil Hunters. I strongly suggest you support this amazing historian and buy her stuff – she’s a great writer and she specializes in folklore and geomythology, it doesn’t get much cooler than that – but if you can’t and you’re interested in the subject – well, I believe scientific knowledge should be shared and accessible to everyone, so here are a few highlights. Part one of six.] 

Griffins: a very mysterious mystery

“A race of four-footed birds, almost as large as wolves and with legs and claws like lions.” 

image

The one thing you need to know about griffins is that they don’t really fit in anywhere. They have no powers, they don’t help heroes, they’re not defeating gods or anything like that. Technically speaking, they’re not even monsters – people thought griffins were legit – real animals who lived in Central Asia and sat on golden eggs and mostly killed anyone who went near them. And okay, someone might say, ‘Frog, what’s fishy about that? People used to be dumb as rocks and there’s plenty of bizarro animals out there, anyway’ and yeah, that’s a very good point – except for one thing. See, what’s creepy about griffins is that we’ve got drawings and descriptions of them spanning ten centuries and thousands of miles, and yet they always. look. the. freaking. same

Like, here’s how people imagined elephants.

image

This is insanely funny and probably why God sent the Black Death to kill everyone, but also pretty common tbh, because a) people want to feel involved, b) people are liars who lie and c) it’s hard to imagine stuff you’ve never seen. So the more a story is passed around, the more it’s going to gain and lose details here and there, until you get from dog-footed hairy monkey of doom to plunger-nosed horror on stilts. But griffins – art or books, they’re consistently described as wolves-sized mammals with a beaked face. So that’s what made Adrienne Mayor go, Uh

And what she did next is she started digging around in Central Asia, because that’s the other thing everyone agreed on: that griffins definitely lived there and definitely came from there. And this is where things get really interesting, because as it turns out, on one side of the Urals you’ve got Greeks going, ‘Mate, the Scythians, you know – they’ve got these huge-ass lion birds, I’m not even shitting you rn’ while on the other side of the Urals – wow and amaze – you’ve got Siberian tribes singing songs about the ‘bird-monsters’ and how their ancestors slaughtered them all because they were Valiant and Good.

(This according to a guy studying Siberian traditions in the early 1800s, anyway, because you know who writes stuff down? Not nomads, bless them: dragging around a shitload of books on fucking horseback is not a kind of life anyone deserve to live.)

And anyway, do you know what else those Mighty Ancestors did? They mined gold sand, and they kept tripping over dinosaur bones because that entire area is full of both things and some places are lucky like that. And in fact, the more excavations were carried out in ancient Scythian settlements, the more we started to realize that those guys were even more obsessed with griffins than the Greek were. Hell, some warriors even had griffins tattooed on their bodies? 

image

And it’s probably all they ever talked about, because that’s when griffins suddenly appear in the Mediterreanean landscape: when Greek people start trading (and talking) with the Scythians.

(Another important note here, not that I’m not bitter or anything: something else those excavations are showing is that Herodotus was fucking right about fucking everything, SO THERE. Father of lies my ass, he was the only sensible guy in that whole bean-avoiding, monster-fucking, psychopathic and self-important Greek ‘intelligentsia’ and they can all fuck off and die and we don’t care about temples Pausy you dumb bitch we want to hear about the tree people and the Amazons and the fucking griffins goddammit. Uuugh. /rant)

So anyway, Scythian nomads had been hunting for gold in places with exciting names like ‘the field of the white bones’ and basically dying of exposure because mountains, so Herodotus (and others) got this right as well: that successful campaigns could take a long-ass time, and very often people just disappeared, never to be heard from again. What everybody got less right: the nomads and adventurers and gold miners weren’t killed by griffins, because by the time they started traveling into those mountains, ‘griffins’ had been dead for hundreds of thousands of years. What they did see, and what was sure to spook the fuck out of them, were fossils – and, more precisely, protoceratops skulls, which can be found on all the major caravan routes from China all the way to Uzbekistan and are so ubiquitous paleontologists call them ‘a damn nuisance’.

And guess what they look like.

Just fucking guess.

image
image

[Left: a golden griffin, Saka-Scyhtian culture; right: psittacosaurus skull, commonly found in Uzbekistan and the western Gobi.]

Also, fun detail if you’re into gory and painful ways of dying: many of the dino skeletons are found standing up, because the animals would be caught in sand storms and drop dead. So basically you’d be riding your horse and minding your own gold-related business when all of a sudden you see the empty sockets of a beaked something staring at you and yeah – as a reminder, the idea of evolution was not a thing until Darwin, so any Scythian or Siberian tribesman seeing something like that would assume there was a fairly good fucking chance of a live whatever-the-hell-this-is waiting for him behind the next hill. And that’s what he’d say to Greek traders over a bowl of fermented mare’s milk: to stay the fuck away from those mountains, because griffins, man, they’re fucking real and there’s hundreds of them and anyway, maybe write that down if writing’s something you’re into, never saw the point myself but eh, to each his own, right, and cheers, good health, peace and joy to the ancestors. 

image

Man, don’t you just love mythology?

(How fossils influenced mythology: part two, Cyclops, will be up soon.) 

Holy fuck, that was fascinating!!!!

pipcomix:

bathearst:

vintar:

hello i have learnt more spider facts

  • spiders will pull their own legs clean off if they get damaged because most of them can regrow legs during molting, which explains why you often see spiders missing a leg but never any missing half a leg?
  • some remarkably distressing scientists proved this by getting a spider to pull off all of its legs and then feeding its limbless torso for months until it sprouted a full complement of legs again and then hopefully used them to get the fuck out of dodge
  • baby spiders don’t get lenses until their first molt and before that they just have baby eyes and while this ought not to be any weirder than the concept of baby teeth, welp,
  • there are so many spiders floating around thousands of metres up in the air that they’re described as “aerial plankton”
  • The Sky Is Full Of Spiders
  • there are spider-parasitising spiders but instead of laying eggs in organs or stealing blood or anything like that they just ride on top of bigger spiders and steal snacks when their mighty steed is eating
  • there are ant-mimicking spiders that use their disguises to raid ant nests and w/e but there are also ant mimics that just. hang out. they make fake ant colonies full of fake ants. sometimes the actual ants that they’re mimicking find their house and live with them. stealth 100
  • some mother spiders live in communal family nests, where multiple mothers can work together to bring down bigger prey while all their collected babies are cared for by the babysitters
  • some mother spiders feed their babies mouth to mouth like birds
  • some mother spiders carry their babies around and i was aware of this but not the fact that if you steal their eggsac they’ll freak out and search for it for hours and sometimes end up adopting anything that’s vaguely the right size, they will carry around empty snail shells for weeks and lovingly dote on them…
  • guys i am literally about to cry over spider moms

i borrowed the book op cites from the library (biology of spiders by rainer f. foelix) because of this post and my two favourite new spider facts are

-they don’t just have an exoskeleton – they also have a secret partial inside skeleton

and

-you know the guy who gave spiders drugs and took pictures of their fucked up webs? he ended up studying them because his buddy was studying garden spiders and they spin webs at 2-5 am and his buddy was like, Ugh, fuck this, i want to sleep in, do you have anything i can give these spiders to make them spin webs at not two in the morning
-and this guy, A Pharmacologist, was like, hell yea, here are some amphetamines for your spiders
-and all those did was make the spiders spin some exceptionally weird webs at 2-5am
-and i guess his buddy gave up in disgust at these spiders who wouldn’t let him sleep but mr. spider amphetamines was like, you know what, this is cool, i’m gonna keep going with this

i’ve never told a lie in my life

Pell ur a hero. Wtf