#deuterostomes

[scienceliscious]

Take a moment to think... At one point in our lives we were all assholes

[nuka-rockit]

Humans are deuterostomes, which means that when the embryo develops the first thing that forms is the asshole. Amazingly, some specimens never seem to evolve past that stage,

[albertonykus]

I finished all my exams, so what’s the best use of my time? Clearly it’s creating phylogenetic teaching aids with the help of Pokémon.

Here presenting the Pokémon Guide to the Tree of Life (with an emphasis on animals, and especially vertebrates)!

(All images from Bulbapedia.)

[thisobscuredesireforbeauty]

An artist’s reconstruction of Saccorhytus coronarius, based on the original fossil finds. Researchers have identified traces of what they believe is the earliest known prehistoric ancestor of humans - a microscopic, bag-like sea creature, which lived about 540 million years ago. Named Saccorhytus, after the sack-like features created by its elliptical body and large mouth, the species is new to science and was identified from microfossils found in China. It is thought to be the most primitive example of a so-called "deuterostome" - a broad biological category that encompasses a number of sub-groups, including the vertebrates. Illustration: S Conway Morris / Jian Han Source

[mikeo56]

No, humans are not protostomes. The main defining trait in protostomes is that the mouth develops before the anus. In humans, the anus develops before the mouth which makes it a deuterostome. Deuterostomes are animals in which the anus develops before the mouth during the embryonic stage.

[itsnotadrugitsaleaf]

Some People Don't Develop Pass This Stage

[nursejessie625]

🤣🤣🤣😜 Some people just never develop past this stage... #deuterostomes (at Suffolk County, New York) https://www.instagram.com/p/BvurUDHpgKCJKXEwxaouElscdfPjhYjZvUdPbI0/?utm_source=ig_tumblr_share&igshid=8w8a5gi204xt

[chiefmugflowerexpert-blog]

#truth #butt #opinions #deuterostomes #me https://www.instagram.com/p/BuFHyEzAl_A/?utm_source=ig_tumblr_share&igshid=1imtgvtwm6k10