The Cephalopoda class of Mollusks! This video covers cephalopod morphology, anatomy, classification, ecology, and evolution. Cephalopods are animals such as octopuses, nautiluses, cuttlefish, squids, and the extinct ammonoids (or ammonites), which are very important index fossils for the Paleozoic and Mesozoic Eras. The major subclasses of cephalopods include: Nautiloidea, Endoceratoidea, Actinoceratoidea, Bactritoidea, Ammonoidea, and Coleoidea. I discuss in detail the internal and external features of cephalopod shells, including nautiloid, goniatitic, ceratitic, & ammonitic ammonoid suture patterns. I also discuss hetermorph ammonoid shell morphologies and planispiral forms and their evolutionary trends.
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: [ Ссылка ]
GEO GIRL Website: [ Ссылка ] (visit my website to see all my courses, shop merch, learn more about me, and donate to support the channel if you'd like!)
0:00 What are cephalopods?
2:56 How huge cephalopods can/could get!
3:36 Cephalopod anatomy/morphology
6:04 Cephalopod classification
7:35 Cephalopod shell morphologies
9:18 Ammonite sutures
12:18 Evolution of cephalopod morphologies
13:40 Cephalopod heteromorphs (weird shapes)
14:32 Planispiral cephalopod morphologies
16:14 Cephalopod evolution
18:46 Upcoming lectures!
19:12 Bloopers!
Hey there, Earth enthusiast! Check my favorite Earth-friendly products:
Bamboo toilet paper: [ Ссылка ]
Bamboo paper towels: [ Ссылка ]
Compostable tableware: [ Ссылка ]
Compostable trash bags: [ Ссылка ]
Bamboo cutlery + straw! : [ Ссылка ]
Eco-Friendly Tote (great for grocery shopping!): [ Ссылка ]
Reusable straws + cleaning brushes (my fav!): [ Ссылка ]
Eco-friendly laundry detergent: [ Ссылка ]
Directly offset your carbon footprint with Wren: [ Ссылка ]
(Just click link, press get started, take the free C footprint quiz, then choose how much you want to reduce your footprint by donating to the C sequestration projects they're funding!)
Non-textbook books I recommend:
Oxygen by D. Canfield: [ Ссылка ]
Brief history of Earth by A. Knoll: [ Ссылка ]
Life on young planet by A. Knoll: [ Ссылка ]
Some assembly required by N. Shubin: [ Ссылка ]
Your inner fish by N. Shubin: [ Ссылка ]
Oxygen by N. Lane: [ Ссылка ]
Alien Oceans by K. Hand: [ Ссылка ]
Life's Engines: [ Ссылка ]
Tools I use as a geologist/teacher/student:
Geology field notebook: [ Ссылка ]
Geology rock hammer: [ Ссылка ]
Geological compass: [ Ссылка ]
Geological hand lens: [ Ссылка ]
Camera: [ Ссылка ]
Carbon-neutral pencil bag: [ Ссылка ]
Carbon-neutral backpack: [ Ссылка ]
Image sources:
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