Cambrian
what was the other name of the cambrian period
The Cambrian Explosion
what is the most notable of the devonian period
called the age of fish marked by a massive diversification of armored placoderms(most notable is dunkleosteus), sharks, and lobe-finned fish
the super continent of Pangea formed and the mammal ancestors synapsid's evolved alongside reptiles
what are the 3 periods of this era
triassic, Jurassic, Cretaceous
What Animal is the current dominate species of this era specifically the holocene epoch
Humans we control the world
what were the first multi cellular life
Jelly fish, trilobites, early corals, brachiopods,
the devonian is most known for what animal
Dunkleosteus
what animal of this time is often thought to be a dinosaur but is actually a synapsid so closely related to us
Dimetrodon
what signifies the Triassic period
it sees the rise of the dinosaurs with coelophysis compysognathus and dilophosaurus
what 3 periods are in this era
paleogene, neogene, quatrenary
how did the cambrian period end
an ice age causing mass extinction
what was most strange about shark evolution during this time
they became super diverse as their scales are teeth like in structure they were able to grow and change in many cool like helicoprion or the buzzsaw shark or Maghriboselache which has a hammer like appendage on the top of it's head
what ended this period
the worst extinction of all time the permian triasic extinction killing 90% of all life
what signifies the Jurassic period
it shows the diversification of dinosaurs into the 6 main body types
(Theropod bipedal, small medium large massive, mostly carniverous),
(Sauropod quadruped (4 legs) medium large massive, bulky, long necks),
next 4 are closer related to each other than the other 2
(Ceratopsian quadruped, small, medium, sometimes large, identifiable by the frills on the necks),
(Ankylosauria quadruped small to low medium armored back sometimes has a clubbed tail)
(stegosauria quadruped medium, large, plates and spikes lining it's back and tail)
(Hadrosauria medium, large, massive duck bills, quadruped and biped)
what signifies the paleogene by epoch
Paleocene (66–55.8 Ma): Mammals diversify and fill ecological niches left by dinosaurs.
Eocene (55.8–33.9 Ma): Early modern mammals emerge; warm climate allows forests to spread.
Oligocene (33.9–23.03 Ma): Global cooling; grasslands expand and modern mammal groups appear.
what kinds of land was around during this time
the land was largely barren, rocky, and inhospitable, dominated by dry, barren landscapes without trees, grass, or plants. It consisted primarily of mud, rock, and perhaps microbial soil crusts. The "land" was mostly separated, with a large southern supercontinent and smaller continents and islands filling the southern hemisphere
this era was refered too as the age of Bugs
The carboniferous
what differentiates synapsid's from reptile's
synapsid's have one Temporal fenestrae aka the hole behind the eye's and reptile's have two one higher one lower
what signifies the cretaceous period
the 6 body types reaching their peak forms
Theropods: Tyrannsaurus rex, Spinosaurus, Giganotosaurus
Sauropods: almost the entire lineage of titanosaurs
Ceratopsian: Triceratops, Styracosaurus, and Pachyrhinosaurus
Hadrosaurs: Hadrosaurus, Parasaurolophus, shangtungasaurus, and honorable mention Olorotitan (my favorite:3)
Ankylosauria: Ankylosaurus, Zuul, Boreapelta
Stegosauria:wuerhosaurus, mongoliostegus, Dacentrurus (stegosaurus evolved in the jurrasic and is long extinct by now)
what signifies the neogene by epoch
Miocene (23.03–5.33 Ma): Continued cooling; apes and early hominids evolve in Africa.
Pliocene (5.33–2.58 Ma): Modern fauna (animals) emerges; climate becomes cooler and drier.
what was the name of the supercontinent in the south pole of Cambrian Earth extra points for the other continents and islands
Supercontinent: Gondwana smaller
continents: Laurentia (North America), Baltica (Scandinavia/Eastern Europe), and Siberia. Other smaller terranes and plates included Avalonia, Kazakhstania, and parts of China
what modern thing do we have only because of the bugs of this time
Oil and fossil fuels
what is most likely an early ancestor to the later lineage of DINOSAURS!!!
lagosaurus
what signifies the end of the mezozoic era
The KP extinction caused by an asteroid impact causing much dust and greenhouse gasses in the air killing plants and the death of plants killing animals the only ones who survived and evolved are the smaller birds a lineage off theropod some smaller adaptable species of every other life type mammal, reptile, fish, bug/invertabrate
what signifies the quaternary by epoch
Pleistocene (2.6 Ma–11.7 ka): Ice ages cover parts of the globe with massive glaciers.
Holocene (11.7 ka–Present): The current, relatively warm interglacial period marked by human civilization.