Phylogenetic Mysteries: Crash Course Zoology #12

In today’s episode of Crash Course Zoology we’re going to solve some phylogenetic mysteries! There are so many more questions we have yet to answer in Zoology so grab some fossils, fire up the DNA sequences, and bring your best hypothesis as we try to figure out where all the baby eels are, explain why spiders seem so lonely, and decide once and for all if horseshoe crabs are arachnids!
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[@SpiderdayNightLive]

TIMESTAMPS FOR SPIDERS/ARACHNIDS 1:18 -> 1:28 Several, animated (intro) 6:05 -> 6:10 One, real (a solifugid digging) 6:15 -> 7:06 Several, animated (two spiders, and two solifugids) 8:50 -> 9:23 One, animated, but only if you are in the camp that horseshoe crabs are arachnids 9:24 -> 11:03 Several, animated (one spider, one scorpion, one solifugid, one ricinuleid) 11:04 -> 11:32 One, animated, but only if you are in the camp that horseshoe crabs are arachnids As a spider scientist (and the science consultant for CCZoo), I love these wonderful animals, but I realize that being startled by a spider can be scary (even if you like them!). An important part of overcoming arachnophobia is building positive interactions with arachnids on /your/ terms, so hopefully this helps some of y'all do so and enjoy the videos.

[@ancientswordrage]

I too am secretly trying to evolve into a crab

[@Coexisties]

😄👍

[@robinhahnsopran]

As soon as she started talking about within-lifetime phylogenetic mysteries, I literally yelled at my screen "EEL BABIES!"

[@Coexisties]

This course just keeps getting better ✨

[@vareesha12]

Love the milotic reference!!

[@johnny_boi5456]

Lmao

[@randompheidoleminor3011]

3:53 **insert that Sam O Nella Sigmund Freud scene**

[@Raptor_Ren]

WHAT’S A BROTHA GOTTA DO TO GET SOME EEL #%^*

[@bananaforscale1283]

Now I know that being a scientist is playing UNO all the time.

[@muhmalikali]

That would be a bit of fun

[@JoseELeon]

I like how pokémon evolution is better at describing metamorphosis than actually describing evolution

[@Haseri8]

Oh wow, a Homestar Runner reference in the wild with Fhqwhgads

[@sciencenerd7639]

I am enjoying the series

[@CBJamo]

I just realized the fhqwhgads reference is probably for the parents watching with their kids. My back hurts.

[@ireallyhatemakingupnamesfo1758]

This course is the first that I've kept up with as it comes out. Thank you for making such engaging and informative videos.

[@jakobraahauge7299]

I looove Rae! There's been a host of epic host on these channels - she's absolutely one of my favourites! 😙 Loads of love from Denmark ❤️ 🤗

[@dstinnettmusic]

3:53 *Sam O’nella intensifies*

[@sizanogreen9900]

WHATS A MAn GOTTA DO...

[@JV-km9xk]

Can I get some eel DI-

[@TheEmpowermentClub.]

Love the video 💖 Thank you.

[@hrithikranjan5421]

Feebas and melotic analogy was just amazing.

[@johnny_boi5456]

0:22 nice Animal Crossing reference

[@zaya234]

Love y’all!!!!!

[@osmia]

Love the Uno reverse cards!

[@djbslectures]

+1

[@muhmalikali]

I'm curious about the horseshoe crab, which group do you think it will belong to?

[@SpiderdayNightLive]

Personally, I hope it will be in the arachnids, because that'd be really cool! But I dont know enough about genetics to analyze the evidence on either side (I mostly study behavior).

[@paulgrijalva]

Outstanding survey. I think you just turned on a huge number of people to study biological sciences. The production and talent was excellent.

[@MildStallion1]

Just chiming in to acknowledge the fhqwhgads reference. Everybody to the limit!

[@SpiderdayNightLive]

#1 summer jam

[@sciencenerd7639]

Fascinating

[@woodrowloftis9070]

Whoa! You spelled "Fhqwhgads" right! Great video, and great throwback reference!

[@AngryBulldogGaming]

thermites are roaches! what the i didn't even know that

[@doogless]

Everybody to the limit! The Cheat is to the limit! Everybody come on Fhqwhgads!

[@LeoStaley]

The mystery of turtle evolution just blows my mind. We have so little certainty that they could plausibly be closer related to mammals than reptiles.

[@SpiderdayNightLive]

That is the one hypothesis that got thrown out a while ago! These are just the 6 that have been proposed over time.

[@tannercarlson7419]

I always look forward to these videos

[@CyberDocUSA]

I'm phylogenetically challenged.

[@CooperCarr]

Science is always about proving itself wrong and I simply love it for that.

[@Zayskibop]

I've never been so proud to be a taxonomist in my life.. Rae, you are radiant

[@Diraphe]

6:50 Where my Homestar Runner fans at?

[@bri1085]

Huh, funny enough, found out about the eels on a podcast just yesterday.

[@MrCaboose]

Awesome video! It was super interesting and well presented. Love this channel!

[@kailawkamo1568]

The horseshoe crab debacle is a rollercoaster lmao

[@kevinnorton4350]

Wait everything wants to be a crab?

[@kevinnorton4350]

I mean i'm down. Seems fun... Just wasnt aware.

[@ChainsGoldMask]

Beavis and Daria

[@ivo8951]

I know you'll be here Morgan

[@ScottDCS]

I could see zoologists spending more time arguing over classification than doing actual science!

[@DeadGirlsPoem]

scientific classification is *the* thing a zoologist does... mostly ;-)

[@SpiderdayNightLive]

Arguing over the classification (if done with evidence) *is* real science!

[@azrielmoha6877]

"arguing" over classification is still science. They still use a lot of statistics and analysis to determine the classification of organisms

[@curiousuranus810]

Brilliant.

[@mananrana6011]

I am not a zoology student but damn, this video is in such a way, it even get me interested

[@jonathanjoestar1938]

That can’t be how zoology is pronounced ... can it???

[@SpiderdayNightLive]

Both pronunciations are accepted! (Im pretty sure I say it the way you are used to)

[@woodrowloftis9070]

I thought the same thing for a long time, especially with how it's spelled. But the more I thought about it, the more it made sense with the way it's spelled. "Zo-ology," not "Zoo-ology." There are only two letter O's, and we can't just pretend the -ology part isn't there, so... yeah. I practically live in the biology department at my school, and all of the professors there pronounce it the way it's being pronounced in the video

[@Vanillastump]

I find it extremely odd that this video didn't focus on the Deep-sea Angler Fish and it's sexual differences. Now to go listen to the song again...

[@Anonarchist]

Uno No U Horseshoe

[@laxr5rs]

Don't worry, I can take it plainly spoken.

[@roberthfagundes4013]

This is my favorite episode so far. Tks

[@bobcat1939]

love the angler fish reference

[@JV-km9xk]

Nice vid as always

[@biggbroo7827]

First view

[@kasvibhatia7452]

First

[@aroongill8848]

first one