Geological Time Scale Pt 2-3 Flashcards
(16 cards)
_____ fossils are fossils depicting organisms behaviour. Ex: _____, _____, ______.
_______ fossils form when organisms gradually dissolve away, leaving behind the impression of the body
_______ fossils are molds left behind that are filled with sediment that formed rock
_______ fossils are fossils that minerals gradually replace organic material, not filling an empty space but gradual
Trace, nests, burrows, footprints
Mold
Cast
Petrified
Fossilized tree resin, _____, is a fossilized version of a substance flowing beneath tree bark to ______ it case of insects, disease or damage
Earth largest deposit of _______ are in _______ _________ __________
Majority came from _________
There was the _______ room that carried _ tons of it and was destroyed by ________ during a bombing
Amber
Protect
Amber
Europe’s Baltic Region
Amber
6
Nazis
Place in order of grandness : periods, eons, epochs and era
Eons> era>period> epoch
Mass extinctions and dates (5)
Ordovician -Silurian 44o Mya
Devonian 365 Mya
Permian - Triassic 250 Mya
Triassic - Jurassic 210 Mya
Cretaceous - tertiary 65 Mya
Important eons to know (4) with the time and what the Earth looked like. What was the eons called before the most recent?
Hadean 4.6-4 bill ya: Earth is forming, hot, molten, formation of the moon, no life
Archean 4 - 2.5 bill ya: crust is cooling, stromatolite- Cyanobacteria
Proterozoic 2.5 bill - 541 Mya: life forms (bacteria, jellyfish, algae)
Phanerozoic541 Mya to now
Precambrian
When did the dodo go extinct?
1662
We are currently in the _______ __________ extinction during the ________ eon, __________ era, _________ period, _______ epoch
Holocene Anthropocene
Phanerozoic
Cenozoic
Quarternary
Holocene
The Triassic period was _____ Mya
230
Dinosaurs appeared during the end of the _________ period _____ Mya.
________ era was the age of the dinosaurs and included _______, ________, _______.
Cretaceous
65
Mesozoic
Triassic, Jurassic, Cretaceous
The ___ _____ extinction occurred 65 Mya and ____% animals went extinct because of the impact.
K-T
80
Birds likely descended from ______ dinosaurs. They are ______ dinosaurs that lived 150 Mya during the Jurassic period.
Ex: _______
Maniraptoran
Theropods
Bambiraptor
Definition: hollow boned and 3 toes on each limb
Theropod
Maniraptors have a ______ - thin feathered fold of skin on wing that helps them fly
Propatagium
Some things that survived the K-t Extinction
Birds, alligators crocodiles, reptiles,amphibians, turtles, lizards, frogs, salamanders
The orginal primate was the _______
Criteria for primate (3)
Purgatorius
Hands and feet that grasp, relatively large and complex brain, vision in 3D
Oldest known dinosaur was the ________ _________ and it lived in the southern part of _______ during the _______ period
Nyasasarus Parringtoni
Pangea
Triassic