The Essentials @the-argent - Tumblr Blog

ultramanultimo

When everyone on the team has Sentai Genji

When you fight another team of Sentai Genji

sparkytheandroid

I knew Ceelo Green’s Grammy outfit looked familiar.

ansemsapprentice

jdjdgray

It’s good to bring older dogs to water so they can relax their arthritic joints and get a little exercise. Beautiful dog, smooth dog.

strigays

thats a fucking goat

zodiaccity

Gemini Sh*t. | TheZodiacCity.com

heart2big

Hi! @fubuki

#fubuki #selfie

champagnemoon

thighetician

(1983)

thetallblacknerd

2016

exeggutor-deactivated20171218

can’t believe we are having this neko parade resurgence without anyone posting the second-greatest application of the song

currentsinbiology

These 300-million-year-old sharks ate their own babies and pooped them out in spirals

A new study suggests that Orthacanthus sharks turned to cannibalism when food became scarce, with evidence of baby shark teeth being found in poop fossils unearthed from an old Canadian coalfield.

“There is already evidence from fossilised stomach contents that ancient sharks like Orthacanthus preyed on amphibians and other fish, but this is the first evidence that these sharks also ate the young of their own species,” said palaeontologist Aodhán Ó Gogáin from Trinity College Dublin in Ireland.

Finding juvenile teeth in ancient shark poop wouldn’t have been enough on its own to suggest that Orthacanthus resorted to cannibalism when other food sources ran low. After all, it’s possible that some other carnivorous marine species was feeding on the baby sharks, and excreted the undigested teeth in their droppings.

But what most likely settles the identification issue is the shape of the fossil poop that the researchers found.

Orthacanthus had a distinctive corkscrew-shaped rectum, and the coprolites (fossil poop) that the researchers discovered were indeed spiral-shaped – making it hard to avoid the grisly conclusion that these sharks ate their own young (a practice known as filial cannibalism).