Chordates - CrashCourse Biology #24

Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the next time someone asks you who you are, you can give them the facts: you're a mammalian amniotic tetrapodal sarcopterygian osteichthyen gnathostomal vertebrate cranial chordate.

Table of Contents:
1) Chordate Synapomorphies 1:04
2) Cephalachordata 1:20
3) Urochordata 3:16
4) Vertebrata 3:49
a) Myxini 4:30
b) Petromyzontida 4:51
c) Chondrichthyes 5:32
d) Osteichthyes 6:05
5) Biolography 7:29
6) Amphibia 9:02
7) Reptilia 9:47
8) Mammalia 10:57

References for this episode can be found in the Google document here: http://dft.ba/-31eh

This video contains the following sounds from Freesound.org:
"Moog_woodenBlocks.aiff" by Feenixx

biology, crashcourse, crash course, phyla, animal, ancestry, chordates, chordata, evolution, mammal, synapomorphy, lancelet, cephalochordata, spinal chord, notochord, vertebrate, nerve chord, pharyngeal slit, urochordata, backbone, vertebrata, brain, myxini, hagfish, craniate, skull, agnathan, shark, gnathostome, cartilage, bone, skeleton, endoskeleton, osteichthyes, fish, coelacanth, biolography, hendrick goosen, fisherman, tetrapod, fins, limbs, frog, amphibian, amniote, amniotic egg, reptilia, ectotherm, endotherm, heart, bird

• Category

  Education

[imamadmad1]

hey hank, can you make a t-shirt that says "hello, my name is mammalian amniotic tetropedal sarcepterygtion..." etc on it? (sorry for any spelling errors that may occur)

[Eric Hall]

Which is exactly why they should try it.

[xxXArcticCobraxx]

i miss the gotee

[insanitymoonshine]

This is my 20th episode today. bring on the test.

[imamadmad1]

Well, many of us would fail that last criteria.

[superj1e2z6]

mammalian amniotic tetrapodal sarcopterygian osteichthyan gnasthostomal vertebrate cranial chordate

[Darren S]

forward-oriented fully-enclosed optical orbits, and a single temporal fenestra, -attached to a vertebrate hind-leg dominant tetrapoidal skeleton with a sacral pelvis, clavical, and wrist & ankle bones; and having lungs, tear ducts, body-wide hair follicles, lactal mammaries, opposable thumbs, and keratinized dermis with chitinous nails on all five digits on all four extremities, in addition to an embryonic development in amniotic fluid, leading to a placental birth and highly social lifestyle.

[Darren S]

I like Aron Ra's..

For example, “Primates” are collectively defined as any gill-less, organic RNA/DNA protein-based, metabolic, metazoic, nucleic, diploid, bilaterally-symmetrical, endothermic, digestive, tryploblast, opisthokont, deuterostome coelemate with a spinal chord and 12 cranial nerves connecting to a limbic system in an enlarged cerebral cortex with a reduced olfactory region inside a jawed-skull with specialized teeth including canines and premolars,

[shawn Hill]

You talk too fast lol, but this was helpful

[gates10611]

if mammals were to evolve into a new more advanced species what would it be called?

[Aviel Menter]

"This does not mean that their blood is cold"

It means that they have no remorse or fear.