Jurassic Period
E9585
The Jurassic Period was a major division of the Mesozoic Era characterized by warm climates, the dominance and diversification of dinosaurs, and the early evolution of birds.
Aliases (2)
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
division of the Mesozoic Era
→
geological period → |
| characterizedBy |
abundant marine reptiles
→
active plate tectonics → ammonite diversification → breakup of the supercontinent Pangaea → diversification of dinosaurs → dominance of dinosaurs on land → early evolution of birds → extensive shallow epicontinental seas → high sea levels → humid conditions in many regions → lush vegetation → opening of the Atlantic Ocean → reef-building by sponges and corals → volcanism in many regions → warm climate → |
| climateComparedToToday |
generally warmer
→
|
| duration |
about 56 million years
→
|
| end |
about 145 million years ago
→
|
| follows |
Triassic Period
→
|
| hasCommonDinosaurs |
ornithopods
→
sauropods → stegosaurs → theropods → |
| hasCommonMarineInvertebrates |
ammonites
→
belemnites → |
| hasCommonMarineReptiles |
ichthyosaurs
→
plesiosaurs → pliosaurs → |
| hasCommonPlants |
conifers
→
cycads → ferns → ginkgos → horsetails → |
| hasDominantTerrestrialVertebrates |
dinosaurs
→
|
| hasFirstAppearance |
archaeopterygiform birds
→
many modern groups of insects → true birds → |
| hasNotableFossilSite |
Morrison Formation
→
Oxford Clay → Solnhofen Limestone → |
| nameCoinedBy |
Alexandre Brongniart
→
|
| nameCoinedIn |
early 19th century
→
|
| namedAfter |
Jura Mountains
→
|
| oceanOxygenLevels |
generally high with some anoxic events
→
|
| partOf |
Mesozoic Era
→
|
| polarRegions |
warmer and largely ice-free
→
|
| precedes |
Cretaceous Period
→
|
| start |
about 201.3 million years ago
→
|
| subdividedInto |
Early Jurassic
→
Late Jurassic → Middle Jurassic → |
Referenced by (10)
| Subject (surface form when different) | Predicate |
|---|---|
|
Early Jurassic
→
Late Jurassic → |
partOf |
|
Phanerozoic Eon
→
|
contains |
|
Cryptodira
("Jurassic period")
→
|
geologicFirstAppearance |
|
Cupressaceae
("Jurassic period")
→
|
hasFossilRecordSince |
|
Mesozoic Era
→
|
hasPart |
|
International Chronostratigraphic Chart
→
|
includes |
|
Cretaceous
→
|
precededBy |
|
Oxford Clay
("Jurassic System")
→
|
stratigraphicUnitOf |
|
Jessica Whiteside
→
|
studiesPeriod |