Mollusca (Pt 2): Bivalves & Gastropods- Invertebrate Paleontology | GEO GIRL
Ғылым және технология
3 major classes of mollusks include: Bivalvia, Gastropoda, and Cephalopoda. This video focuses on bivalves and gastropods: their anatomy, morphology, important physical characteristics that may help with identifying specific snail or clam groups, classification, ecology, and evolution.
References: Prothero, D.R. (2013). Bringing Fossils to Life: An Introduction to Paleobiology. Third Edition. Chapter 16: Kingdom of the Seashells: The Molluscs. pp. 384-431. Columbia University Press: amzn.to/3nU0ada
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0:00 Bivalves vs. gastropods
0:54 Gastropod basics
2:24 Snails metamorphose?
4:10 Gastropod classes
5:55 Gastropod morphologies & evolution
14:34 Gastropod coiling types
16:38 Bivalve basics
17:37 Bivalve vs. brachiopod symmetry
18:00 Bivalve morphology
20:02 Bivalve gill classification
21:07 Bivalve dentition types
21:48 Bivalve subclasses
22:20 Bivalve orders & ecology
23:58 Evolution of bivalves & gastropods
27:44 Upcoming content!
28:18 Bloopers!
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Image sources:
woostergeologists.scotblogs.w...
www.fossilera.com/fossils/fos...
pixfeeds.com/images/animals/s...
www.ebay.com/itm/Fossil-Snail...
www.oceanviewfoundation.org/ne...
www.fossilera.com/fossils/pol...
/ 226165212515937982
www.mesa.edu.au/molluscs/mollu...
Figs from www.amazon.com/Bringing-Fossi...
www.uky.edu/KGS/fossils/fossi...
www.nmr-pics.nl/Trochidae/alb...
/ 1266706124366944
www.ammonite.free-online.co.uk...
en.wikipedia.org/wiki/Varix_(...)
www.petesaquariums.com/shop/i...
www.fossilera.com/fossils/mio...
www.gastropods.com/4/Shell_151...
www.gastropods.com/2/Shell_589...
Fig from www.amazon.com/Bringing-Fossi...
www.nmr-pics.nl/Volutidae_new...
www.qm.qld.gov.au/Explore/Fin...
www.nmr-pics.nl/Fasciolariida...
www.gastropods.com/2/Shell_511...
www.shells-of-aquarius.com/cy...
www.inaturalist.org/photos/13...
www.gastropods.com/8/Shell_402...
www.shellstudio.com.tw/produc...
en.wikipedia.org/wiki/Halioti...
www.ammonit.ru/foto/29292.htm
en.wikipedia.org/wiki/Sinistr...
healthcautions.com/the-most-s...
www.uky.edu/KGS/fossils/fossi...
www.digitalatlasofancientlife...
www.digitalatlasofancientlife...
Figs from www.amazon.com/Bringing-Fossi...
www.zmescience.com/other/feat...
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Пікірлер: 34
Hello! I found some interesting bivalves and a large gastropod fossil/s in the Chihuahuan desert, just to the west of Ciudad Juarez, Mexico. They are all a mouse gray color. I have been trying to identify them by class/ order to no avail. I am reading field guides, watching fossil videos, and looking on the Internet. The bivalves are mostly clams, mostly smooth, ( some ridged) but there appears to be mussels and/ or oysters too. The geological age of the region is Quartenary, but I heard to not rely on that 100% because older strata can be found in arroyos, weathered cliffs, etc. The fossils are pretty weathered. This video is crucial for me to figure out more! I am organizing my collection, and want to label things beyond the generic terms of " snail" " clam" and such.
Your Bloopers are adorable 😍 and adds such a real, human factor to your Lectures!! OMG! Turbinates!! 😁 Never knew what they were called. Here's something that you MIGHT find interesting... especially about Genus: Turbo. I was a Racing Car driver and Engine Builder for many years (my main Hobby). Turbochargers are a common feature of high horsepower Engines. A Turbocharger really resembles a Turbinate... In fact we always called Turbochargers "Snails"! I THOUGHT it was just a play on words, because they made slower Engines FAST, while actually reducing harmful emissions. 😉 In this one, you REALLY taught me something intriguing!! Another tidbit, the Conch is the only Gastropod that I find appetizing! I know that the French enjoy several Snails 🐌.... But I never could get myself to try one. Even though the Conch technically IS a Snail!!
@GEOGIRL
Жыл бұрын
Wow go figure! I never knew there was a connection between snails and engines! hahaha And yea, I used to do the bloopers a lot, I liked that I shared the imperfections so people knew I was no where near perfect, but I stopped adding them in my newer videos because I just don't make as many mistakes or at least not funny ones anymore haha, but I do think it's a fun addition to my older videos for people that go back and watch those ;)
@CarminesRCTipsandTricks
Жыл бұрын
@@GEOGIRL One can find Science ANYWHERE!!🤗😎 It's good that you've gotten so much better.... trying to "make bloopers" now would look contrived at best.... Keep up the great work!! I've got so many of your Videos to catch up on. I feel a bit smarter after each one!! 🤗 ❣️ 💕
The bloopers had me laughing so hard, never new revison could be this fun, thanks Geogirl!
@GEOGIRL
2 жыл бұрын
Haha, I am glad you enjoyed them 🤣My paleontology videos always have so many bloopers because there are so many long and hard names lol!
@momosketches_dk7743
2 жыл бұрын
GEO GIRL just finnished the Exam and i Got a 12! 🥳 Thats the best grade on the 7-scale we use in Denmark, your videos really helped me get there, thanks again... doctor? Isnt that what we Call PhD’s haha
@GEOGIRL
2 жыл бұрын
@@momosketches_dk7743 Wow that's so great to hear! Congrats! 🎉 And I am a PhD student currently, so not yet a doctor, but almost! ;D
Isn't it curious how organisms evolve without a plan and build themselves up from a single cell? It's so similar to how ai responds to a prompt and builds itself up into a work of art.
dude you saved my final for sure. it’s so find to hard Geo review stuff on this site sometimes
Thank you for uploading this video - jampacked with information! I'll watch this in two sessions cause going through all those coils in one session would just make me dizzy. 🙂
Hi, snails make pearls, too. 😊
2:00 - Those molluscs that do not have shells are more rarely preserved due to a lack of the shells, and this is obviously. Though some of them are able to be preserved potentially, but only in Lagerstattes. MORE STREET GASTROPOD FINDS EVEN WITHOUT SHELLS!!!
#GEOGIRL #GEOGIRL I ❤️ #GEOGIRL My favorite day of week is when you release new video. Time to watch this entire video
@GEOGIRL
3 жыл бұрын
Aww that makes me so happy, I am so glad you like them!❤️
You are just awesome....keep going
@GEOGIRL
2 жыл бұрын
Thank you so much! Will do :D
Great work!
@GEOGIRL
2 жыл бұрын
Thank you! :D
hi geo girl!, i have a question, how to know if it is posterior or anterior from dentition?
Nice
Excellent
@GEOGIRL
2 жыл бұрын
Thanks, so glad you liked it! :D
Pupa pronounced "peooopah" just like butterfly pupa, Nice overview!
@GEOGIRL
3 жыл бұрын
Hehe thanks so much Sooner, I appreciate your help ;)
So the gas station Shell shell is a brachiopod?
@963ag
16 күн бұрын
Scallop or scientific name, Pectin.
I am a lecture in college here in India...
@GEOGIRL
2 жыл бұрын
That's so cool, I just saw a couple videos on your channel, they are impressive and very informative. I feel so lucky to have you in my audience, thanks for the support!
I for one like how you pronounce everything ❤️
@GEOGIRL
3 жыл бұрын
HAHAHA well thank you Oliver, how sweet of you;)
Tomorrow is my palaeontology exam 😢…. Why too much to remember the names.?
@GEOGIRL
2 жыл бұрын
Haha that is always the hardest thing about paleo! My professor took points off for SPELLING! It was a nightmare lol
Damn my favorite youtuber ever. Hit me up boo... I can make your bedrock 😏