Mollusca I : Bivalves and Gastropods

Evolution of Molluscs Part 1/3
First you'll sea history about early molluscs and then some specifications of bivalves and gastropods. These two  developped a shell to protect their soft bodies. This shell is mostly the only part of their body that have fossilized and can be studied now by paleontologists.

Illustrations by Satoshi Kawasaki

Sources and more informations :

Kimberella - https://evolutionnews.org/2020/09/was...
Wiwaxia - http://www.prehistoric-wildlife.com/s...
Halkieria - https://www.10tons.dk/halkieria-evang...
Orthrozanclus - https://www.nature.com/articles/s4159...
Immanitas - https://www.mindat.org/taxon-4591819....
Torreites - https://agupubs.onlinelibrary.wiley.c...
Radiolites - https://www.mindat.org/taxon-7729725....
Trigonia - https://www.britannica.com/animal/Tri...
Neomegalodon - https://dbpedia.org/page/Neomegalodon
Diceras - https://www.mindat.org/taxon-3237813....
Caprina - https://eol.org/pages/46473199
Requienia - https://www.bagniliggia.it/WMSD/HtmSp...
Giant clam - https://www.nationalgeographic.com/an...
Pacific geoduck - https://oceana.org/marine-life/cephal...
Flame scallop - https://reefbuilders.com/2014/11/14/d...
Vicarya - https://www.mindat.org/taxon-6008318....
Scaly-footed snail - https://www.wired.com/2015/02/absurd-...
Violet sea snail - http://www.mesa.edu.au/atoz/Violet_Se...
Xenophora - http://www.marinespecies.org/aphia.ph...
Geography cone - https://www.nationalgeographic.com/an...
Kalinga - http://www.seaslugforum.net/find/kali...
Naked sea butterfly - https://www.southernliving.com/news/n...

0:00 Phylogenetic tree
0:12 Mollusca
1:38 Bivalvia
4:48 Gasteropoda

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