Statements (60)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:geographical_feature
|
| gptkbp:associated_with |
Pangaea breakup
|
| gptkbp:characterized_by |
marine transgression
|
| gptkbp:climate |
warm and humid
|
| gptkbp:duration |
approximately 4 million years
|
| gptkbp:ended |
197.3 million years ago
|
| gptkbp:follows |
Rhaetian stage
|
| gptkbp:fossil_record |
gptkb:Brachiopods
gptkb:Ammonites Dinosaur tracks Bivalves |
| gptkbp:geological_features |
Jurassic
sedimentary rocks |
| gptkbp:geological_time_scale |
part of the Mesozoic era
earliest Jurassic stage part of the Jurassic system |
| gptkbp:historical_significance |
first recognized in 19th century
|
| https://www.w3.org/2000/01/rdf-schema#label |
Hettangian stage
|
| gptkbp:named_after |
Hettange-Grande
|
| gptkbp:neighboring_city |
Hettange-Grande, France
|
| gptkbp:paleobiology |
gptkb:ichthyosaurs
gptkb:saurischian_dinosaurs gptkb:plesiosaurs seasonal rainfall diverse marine life tectonic activity ferns continental drift conifers cycads plant fossils gymnosperms landmasses tropical conditions fish fossils invertebrate fossils ornithischian dinosaurs early reptiles early mammals early angiosperms early flowering plants ginkgoes shallow seas oceanic basins early dinosaurs ammonoid cephalopods early conifers early cycads early ferns early ginkgoes |
| gptkbp:part_of |
Early Jurassic
|
| gptkbp:precedes |
Sinemurian stage
|
| gptkbp:significance |
first stage of the Jurassic period
|
| gptkbp:started_in |
201.3 million years ago
|
| gptkbp:stratigraphy |
Hettangian deposits
Hettangian formations Hettangian layers Hettangian sequences |
| gptkbp:bfsParent |
gptkb:Massospondylus
|
| gptkbp:bfsLayer |
6
|