Period Tr

Triassic

251.9020 – 201.4000 Ma

The Triassic is a geologic period and a stratigraphic system that spans 50.5 million years from the end of the Permian Period 251.902 Ma to the beginning of the Jurassic Period 201.4 Ma. The Triassic Period is the first and shortest geologic period of the Mesozoic Era, and the seventh period of the Phanerozoic Eon. The start and the end of the Triassic Period featured major extinction events.

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Triassic
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© Scotese, Christopher R.; Vérard, Christian; Burgener, Landon; Elling, Reece P.; Kocsis, Ádám T. · CC BY 4.0
Fossil genera 323
Grallator
Grallator
Dinosaurs
Ichnogenus Extinct
119 occ.
Massospondylus
Massospondylus
Dinosaurs
Valid Extinct
67 occ.
Eubrontes
Eubrontes
Dinosaurs
Ichnogenus Extinct
61 occ.
Nothosaurus
Nothosaurus
Marine reptiles
Valid Extinct
34 occ.
Anchisauripus
Anchisauripus
Dinosaurs
Ichnogenus Formal taxon Extinct
33 occ.
Anomoepus
Anomoepus
Dinosaurs
Ichnogenus Extinct
24 occ.
Ichthyosaurus
Ichthyosaurus
Marine reptiles
Valid Extinct
20 occ.
Coelophysis
Coelophysis
Dinosaurs
Valid Extinct
19 occ.
Plateosaurus
Plateosaurus
Dinosaurs
Valid Extinct
19 occ.
Eosauropus
Eosauropus
Dinosaurs
Ichnogenus Formal taxon Extinct
16 occ.
Kayentapus
Kayentapus
Dinosaurs
Ichnogenus Extinct
15 occ.
Coelurosaurichnus
Coelurosaurichnus
Dinosaurs
Ichnogenus Extinct
14 occ.
Placodus
Placodus
Marine reptiles
Valid Extinct
10 occ.
Thecodontosaurus
Thecodontosaurus
Dinosaurs
Valid Extinct
10 occ.
Cyamodus
Cyamodus
Marine reptiles
Valid Extinct
9 occ.
Eudimorphodon
Eudimorphodon
Pterosaurs
Valid Extinct
9 occ.
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News 23
Fern-Fueled Wildfires Raged across Europe for Millennia during End-Triassic Mass Extinction
Fern-Fueled Wildfires Raged across Europe for Millennia during End-Triassic Mass Extinction
A 201-million-year-old climate catastrophe turned Europe into a landscape of fern savannahs that repeatedly caught fire, according to new research published in the journal Nature Geoscience. The post Fern-Fueled Wildfires Raged across Europe for Millennia during End-Triassic Mass Extinction appeared first on Sci.News: Breaking Science News.
23/07/2026 sci-news
Ancient ferns turned Triassic Europe into a wildfire inferno
Ancient fern savannahs may have transformed parts of Europe into a wildfire-prone inferno during the end-Triassic mass extinction. New fossil evidence suggests the ferns repeatedly regrew after fires, creating fresh fuel that helped prolong the devastation.
22/07/2026 sciencedaily
Tiny Triassic Reptile Sheds Light on Early Lizard Evolution
Tiny Triassic Reptile Sheds Light on Early Lizard Evolution
Today, lepidosaurs -- the reptile group that includes lizards, snakes and New Zealand’s tuatara -- are among the most diverse vertebrates on Earth, but their earliest evolutionary history remains poorly understood. The post Tiny Triassic Reptile Sheds Light on Early Lizard Evolution appeared first on Sci.News: Breaking Science News.
10/07/2026 sci-news
Ancient Oceans Began Losing Oxygen Millions of Years before End-Triassic Mass Extinction
Ancient Oceans Began Losing Oxygen Millions of Years before End-Triassic Mass Extinction
Chemical traces preserved in ancient rocks indicate that marine environments were deteriorating long before the catastrophe that wiped out vast numbers of species at the end of the Triassic period, around 201 million years ago. The post Ancient Oceans Began Losing Oxygen Millions of Years before End-Triassic Mass Extinction appeared first on Sci.News: Breaking Science News.
02/06/2026 sci-news
New English Crocodylomorph Honours Welsh Teacher
Scientists have identified a new species of ancient crocodylomorph from Upper Triassic rocks in southwest England. The newly named species, Galahadosuchus jonesi, lived around 215 million years ago and it represents the second species of non-crocodyliform crocodylomorph described from the Late Triassic–aged fissures of the Bristol Channel area. Non-crocodyliform crocodylomorph fossil material is known from
01/06/2026 everythingdinosaur
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Parent interval
Mesozoic Era
Sub-intervals 3
Early Triassic
251.9020 – 247.0000
Middle Triassic
247.0000 – 237.0000
Late Triassic
237.0000 – 201.4000