let’s get primitive!
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Let’s Get Primitive!. Mr. Bunn Lunch Lectures Spring 2014. Thalassocnus. Thalassocnus. Extinct Semi-Aquatic (Marine) Sloth Fossils found off the coast of Peru and Chile What is familiar about this marine sloth’s fossil location? (Think back to our last lecture) 2-23 M.Y.A. Thalassocnus. - PowerPoint PPT PresentationTRANSCRIPT
Let’s Get Primitive!Mr. BunnLunch LecturesSpring 2014
Thalassocnus
Thalassocnus•Extinct
•Semi-Aquatic (Marine) Sloth
•Fossils found off the coast of Peru and Chile▫What is familiar about this marine sloth’s
fossil location? (Think back to our last lecture)
•2-23 M.Y.A.
Thalassocnus•Still mammals
•No gills => Lungs
•Original habitat:▫Coastal waters
Thalassocnus
What is it eating?
Thalassocnus•Diet▫Sea grasses
•Thalassia▫Extant genus of sea grass
•Why do you think this animal’s genus name is Thalassocnus?
Thalassocnus•Why do you think these sloths fed on sea
grasses?
•Think about habitat (coastal waters)
•Think about diet (sea grasses)
•Sea grasses grow in shallow waters
Deinotherium
Deinotherium
Deinotherium•Extinct
•Distribution▫Asia, Africa and Europe
•So…about those tusks?▫Claw?▫Shovel?▫Rake?
Deinotherium
Therizinosaurus•Therizo-▫“To reap” or “cut off”
•Extinct
•Fossils found in Mongolia
•Herbivorous?
Therizinosaurus
Epidexipteryx
Epidexipteryx•Extinct
•“-teryx”▫“feather”
•Why do you think it has this name?▫“Display feather”
• Jurassic Period
Epidexipteryx
Epidexipteryx•Does it look like this animal would be able
to fly?
•Feathers evolved before flight
•Um, what?
Epidexipteryx•Extinct
•“-teryx”▫“feather”
•Why do you think it has this name?▫“Display feather”
• Jurassic Period
Helicoprion
Helicoprion•Extinct
Helicoprion
Helicoprion•We’ve talked about genera…
•Lots of species in a genus
Hallucigenia
Hallucigenia•Cambrian period
•Didn’t last very long
•Why do you think this is?▫Protection from predation?▫Under-developed sensory or motor
function?
Jaekelopterus
Jaekelopterus
Jaekelopterus•Enough said
Longisquama
Longisquama•Cambrian period
•Didn’t last very long
•Why do you think this is?▫Protection from predation?▫Under-developed sensory or motor
function?
Longisquama•“Long scales”