Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
Mesozoic “Explosion”
|
Post extinction(P-Tr) exponential increase
Great deal of diverstiy |
|
Marine Invertebrates
|
Diverse, Coccoliths, clams, ammoniods.
|
|
Coccoliths
|
Abundant, complex design that differs between species, good index fossil
|
|
Ammonoids
|
Tiny(well cutting), widespread (all marine habitats), easily identified (suture pattern), continuous change
dominate, fish of mesozoic |
|
Rudist Bivalves
-Index Fossil |
Reef building, subsurface, perect for oil/gas.
|
|
Cycads
|
Terrestrial palnt, dominates the J/Mesozoic
"Age of the Cycads" |
|
Ginkgos
|
Very common plant in Mesozoic
Living Dinosaur |
|
Angiosperms
-comp: Gymnosperms |
95% today,"enclosed seed"
The flowering plant Gymno:need alot of pollen-wind Angio:less pollen, insects/marsupials |
|
Vertebrates
|
"Age of Reptiles"
Dinosaur is one type of reptile. |
|
Age of Reptiles
|
Tons of dry land(Pangaea) excellent for reptiles
|
|
Dinosaurs
-Saurischia -Ornithischia |
@ orders based on pelvic bones
|
|
-Saurischia
|
Lizard Hipped
|
|
-Ornithischia
|
Bird Hipped
|
|
“Holy” heads
|
Categorized by temporal openings in their skulls
|
|
Carnivorous
|
T-Rex
Lizard Hipped,only carnivor, strong jaw muscles, serrated incisors |
|
Herbivorous
-Brontosarus Apatasaurus) |
Plant Eaters
Bird Hipped |
|
Archaeopteryx
|
Reptilian and Birdlike features, transition fossil from reptile to bird
|
|
Flying Reptiles
-Pterosaurs |
Laid eggs
|
|
Marine Reptiles
-Mososaurs -Ichthyosaurs |
huge, bouyant in water, laid eggs had scales
|
|
Mammals
|
Low diversity, small size.
Outcompeted by reptiles. Earbones, jaws, teeth. |
|
Ectothermic
|
Cannot control body heat, scavengers
|
|
Endothermic
|
Can control body heat, predators
|
|
Dinosaurs Warm/Cold blooded or mixed
|
Unknown, Lg size heat up slow, cool down slow
|
|
K/T Extinction
|
2nd biggest extinction event
65my, affects everything (marine, terrestrial, Aerial) |
|
K/T Extinction
|
85% extinction
Unaffected:Snakes Turtles, Crocs, Lizards, Amphibians, birds, MAMMALS |
|
Iridium-rich clay
|
Loaded w/ iridium, a metal that is rare, evidence of asteroid event, settles all over Earth
|
|
Buried Crater
|
Ycatan Peninsula, evidence of buried crator very deep
|
|
Shocked quartz
|
Striations from high pressures or metorite impact
|
|
Meteorite Impact Theory
|
Ycatan Peninsula, evidence of buried crator, Iridium-rich clay, Shocked quartz
|
|
Flood Basalts –
India -Volcanism Theory |
Massive flood balalts in India,
|