Evolution and Phylogeny | GEO GIRL

[@carissa8283i]

Thanks!

[@whatabouttheearth]

The bone in your upper arm is the Humerus. STYLOPOD: Humerus ZEUGOPOD: Radius and Ulna AUTOPOD: Manus (forlimb "hand")/Pes (hindlimb) Those terms are generalized for morphological differences (I didn't explain it well). Chapt 9 (Appendicular Skeleton) in 'Vertebrates: Comparative Anatomy, Function, Evolution' by Kenneth Kardong explains it well (you can find a free copy on 'Library Genesis', or by the 5th edition for cheap used)

[@GEOGIRL]

Ah, thank you so much! :D I wouldn't have known all that haha

[@peterjodway2543]

@@GEOGIRL lmao 'library genesis': the last of the unsanctioned russian natural resources

[@nelson138]

@@peterjodway2543 hahahahaha! made me cry.

[@EnvoyofChaos31]

I've been watching a few of your videos and am almost certainly going to be watching many more. Thanks for creating this series. I also was curious to see if you had an opinion on group selection? I'm aware that there is much controversy over the issue which academics from many disciplines have chimed in upon and would be interested to see if you had formulated an opinion, and if so how you evaluated the many opinions to arrive at your own?

[@Splarkszter]

Finally found a class format that is highly entertaining. Thank you so much for this! Really loving watching your videos, while what i'm studying doesn't relate to this, i love to learn about a lot of different topics, learning about science makes me happy. Thank you for the work you do!

[@lukecampbell6647]

I've started going through your videos from the beginning. They are interesting and make for a good review of all the geology stuff i haven't seen for decades. I would like to point out that the cladogram you showed in this video, however, is incorrect. Birds are more closely related to the reptiles than to the mammals. maybe use marsupial mammals and placental mammals instead? (With pouches and placentas used for the derived trait examples).

[@GEOGIRL]

Haha! Wow you are going back VERY far! Disclaimer about my earlier videos (>1 year ago) I probably got a lot more wrong! lol I will have to go back and check the cladogram, thanks for letting me know! The cladogram I showed is actually from the lab book that my university uses to teach intro geo so it's important that I let them know as well ;) Thanks again!

[@nelson138]

I'm not an expert at all. Just a reader. love the topic. You didn't mention chromosomal crossover as another way of mutation. What are your thoughts on that? Love the vid, thank you for making such wonderful content.

[@ainaojo925]

Interesting evolution we know ape to man 👨 and we are the fish ancestors and fish crawl out to water 💦 become amphibian then they turn to lizard 🦎 etc. so Tasmanian tiger and the wolf is convergent evolution

[@GEOGIRL]

Yea! I actually have a video coming out about the transition of fish to land and then to amphibian and then to reptile and then to mammals and birds in a video coming out this summer ;D So excited, I love this topic :)

[@robertab929]

min. 12:30 This picture is a bad example of cladogram. Most groups there are NOT real phylogenic/cladistic group. Only mammals, birds, amphibians are real groups.

[@KateeAngel]

Your cladogram is wrong, birds diverge WITHIN reptile (sauropsid) clade. Reptiles in the usual sense of word (without birds) aren't a clade at all, and thus can't be on any correct cladogram

[@robertab929]

There are more errors in this cladogram. Jawless Dish and Jawed Fish are artificial groups in the same way like Reptiles w/o Birds.

[@robertab929]

She also talks about Prokaryota and Archaea which are considered artificial groups, like algae, protists, reptiles, or fish :)