Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/30

Click to flip

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,