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First period of the Mesozoic Era
The Triassic (/traɪˈæsɪk/; sometimes symbolized as 🝈) is a geologic period and a stratigraphic system that spans 50.5 million years from the end of the
Triassic
Earth's most severe extinction event
% Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Permian–Triassic extinction event, colloquially known as the Great Dying, was an extinction
Permian–Triassic extinction event
Permian–Triassic_extinction_event
Mass extinction ending the Triassic period
Cap Late D O–S The Triassic–Jurassic (Tr-J) extinction event, often called the Triassic–Jurassic mass extinction (TJME) or end-Triassic extinction, marks
Triassic–Jurassic_extinction
Third and final epoch of the Triassic Period
The Late Triassic is the third and final epoch of the Triassic Period in the geologic time scale, spanning the time between 237 Ma and 201.4 Ma (million
Late_Triassic
Clade of reptiles
era, first appearing early in the Triassic period. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya
Dinosaur
Musical comedy
Triassic Parq is a musical comedy with music by Marshall Pailet, and lyrics and book by Marshall Pailet, Bryce Norbitz and Steve Wargo. The novel and film
Triassic_Parq
Second period of the Mesozoic Era
system that lasted about 58.3 million years, spanning from the end of the Triassic Period 201.4 Ma (million years ago) to the beginning of the Cretaceous
Jurassic
Sixth and last period of the Paleozoic Era
to the beginning of the Triassic Period 251.902 Ma. It is the sixth and last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic
Permian
Second era of the Phanerozoic Eon
history, lasting from about 252 to 66 million years ago, comprising the Triassic, Jurassic and Cretaceous Periods. It is characterized by the dominance
Mesozoic
Second epoch of the Triassic period
timescale, the Middle Triassic is the second of three epochs of the Triassic period or the middle of three series in which the Triassic system is divided
Middle_Triassic
Television Film
Triassic Attack is a 2010 television film directed by Colin Ferguson and produced by UFO International Productions. It premiered November 27, 2010, on
Triassic_Attack
First of three epochs of the Triassic Period
The Early Triassic is the first of three epochs of the Triassic Period of the geologic timescale. It spans the time between 251.902 Ma and 246.7 Ma (million
Early_Triassic
Fourth and current eon of the geological timescale
Jurassic Period. It has three major epochs: Early Triassic, Middle Triassic, and Late Triassic. The Early Triassic lasted between 252 million to 247 million years
Phanerozoic
Group of diapsids broadly classified as reptiles
relatives. The oldest true archosaur fossils are known from the Early Triassic period, though the first archosauriforms and archosauromorphs (reptilians
Archosaur
report a mass occurrence of specimens of Halorella amphitoma in the Upper Triassic strata of the Dachstein Formation (Hungary), interpreted as preserved in
2026_in_paleontology
Subdivisions of geological time
the Triassic Period (252 - 201 Ma), though Lucas later designated LVFs for other periods as well. Eight worldwide LVFs are defined for the Triassic. The
Triassic land vertebrate faunachrons
Triassic_land_vertebrate_faunachrons
Clade of tetrapods
the Early Triassic. Synapsid population and diversity were severely reduced by the Capitanian mass extinction event and the Permian–Triassic extinction
Synapsida
Rapid decrease in Earth's biodiversity
End Permian extinction, or the "Great Dying", occurred at the Permian–Triassic transition. It was the Phanerozoic Eon's largest extinction: 53% of marine
Extinction_event
Major climatic change and biotic turnover during the Triassic
the latter part of the Carnian Stage, the first subdivision of the Late Triassic Epoch, and lasted for perhaps 1–2 million years (around 234–232 million
Carnian_pluvial_episode
Extinct genus of dinosaurs
Herrerasaurus is likely a genus of saurischian dinosaur from the Late Triassic period. Measuring 6 m (20 ft) long and weighing around 350 kg (770 lb),
Herrerasaurus
Largest known delta plain in Earth's geological history
The Triassic Boreal Ocean (TBO) Delta Plain was a fluvial delta plain formation located in Northern Pangaea during the Triassic period (Carnian) from
Triassic Boreal Ocean Delta Plain
Triassic_Boreal_Ocean_Delta_Plain
Clade of therapsids
(approximately 260 mya), and extensively diversified after the Permian–Triassic extinction event. Mammals are cynodonts, as are their extinct ancestors
Cynodontia
Genus of Late Permian and Early Triassic dicynodont therapsids
genus of herbivorous dicynodont therapsids from the late Permian and Early Triassic epochs (around 248 million years ago). It had a widespread distribution
Lystrosaurus
2026 American documentary series
series focuses on the history of dinosaurs from their appearance in the Triassic period until the demise of non-avian dinosaurs in the Cretaceous–Paleogene
The_Dinosaurs_(miniseries)
Desojo (2026). Terras et al. (2026) compare the cranial morphology of Triassic pseudosuchians and other reptiles (including dinosaurs), and argue that
2026 in archosaur paleontology
2026_in_archosaur_paleontology
Neoproterozoic to Cretaceous landmass
Gondwana began to separate from northern Pangea (Laurasia) during the Triassic, and started to fragment during the Early Jurassic (around 180 million
Gondwana
Extinct genus of dinosaurs
after the giant monster movie character Godzilla. It lived in the Late Triassic Period, containing a single known species, Gojirasaurus quayi. Gojirasaurus
Gojirasaurus
Clade of tetrapods including mammals
Guadalupian (Middle Permian) through to the Early Triassic. In the aftermath of the Permian–Triassic extinction event, therapsids declined in relative
Therapsida
Supercontinent from the late Paleozoic to early Mesozoic eras
and began to break apart about 200 million years ago, at the end of the Triassic and beginning of the Jurassic. Pangaea was C-shaped, with the bulk of its
Pangaea
"Exceptional vertebrate biotas from the Triassic of China, and the expansion of marine ecosystems after the Permo-Triassic mass extinction"". Earth-Science Reviews
List_of_lagerstätten
National park in Arizona, United States
known for its fossils, especially fallen trees that lived in the Late Triassic Epoch, about 225 million years ago. The sediments containing the fossil
Petrified Forest National Park
Petrified_Forest_National_Park
Large region of volcanic rock in Russia
eruptions continued for roughly two million years and spanned the Permian–Triassic boundary, or P–T boundary, which occurred around 251.9 million years ago
Siberian_Traps
Extinct order of large marine reptiles
about 94 million years ago, into the Late Cretaceous. During the Early Triassic epoch, ichthyosaurs and other ichthyosauromorphs evolved from a group of
Ichthyosauria
Geologic formation in Tanzania
Formation (also known as the Manda Beds) is a Middle Triassic (Anisian?) or possibly Late Triassic (Carnian?) geologic formation in Tanzania. It preserves
Manda_Formation
Extinct family of basal saurischian dinosaurs
record around 233.23 million years ago (the Carnian stage of the Late Triassic), before becoming extinct by the end of the Carnian stage. Herrerasaurids
Herrerasauria
Clade of cynodonts
herbivorous diets. The earliest and most basal probainognathian is the Middle Triassic (Anisian) aged Lumkuia, from South Africa, though probainognathians would
Probainognathia
Informal group of Triassic archosaurs with pillar-erect posture
"Rauisuchia" is a paraphyletic group of mostly large and carnivorous Triassic archosaurs. Rauisuchians are a category of archosaurs within a larger group
Rauisuchia
Prehistoric ocean between Gondwana and Laurasia
which lasted between the Cambrian and the Early Triassic, while the Neotethys formed during the Late Triassic and lasted in some form up to the Oligocene–Miocene
Tethys_Ocean
Genus of theropod dinosaurs from the late Triassic
that lived approximately 215 to 201.4 million years ago during the late Triassic period from the middle Norian to Rhaetian age in what is now the southwestern
Coelophysis
Genus of saurischian dinosaur
hunter') is an extinct genus of saurischian dinosaur known from the Late Triassic (Norian or Rhaetian ages) Chinle Formation of Ghost Ranch, New Mexico,
Ptychotherates
Clade of reptiles
Crurotarsi as the term for crocodilian ancestors. In 2011, a major revision of Triassic archosaur relations proposed that Rutiodon's group, Phytosauria, was not
Pseudosuchia
Age in the Early Triassic epoch
the Olenekian is an age in the Early Triassic epoch; in chronostratigraphy, it is a stage in the Lower Triassic series. It spans the time between 249
Olenekian
Extinct order of tetrapods
amphibians—that flourished worldwide during the Carboniferous, Permian and Triassic periods, with fossils being found on every continent. A few species continued
Temnospondyli
Genus of giant ichthyosaurs
IK-thee-ə-TY-tən) is an extinct genus of giant ichthyosaur from the Late Triassic (Rhaetian), known from the Westbury Mudstone Formation in Somerset, England
Ichthyotitan
Geologic formation in Brazil
found in Rio Grande do Sul, Brazil. It is primarily Carnian in age (Late Triassic), and is notable for its fossils of cynodonts, "rauisuchian" pseudosuchians
Santa_Maria_Formation
Extinct genus of reptiles
sauros, 'lizard') is an extinct genus of sauropterygian reptile from the Triassic period, approximately 245–228 million years ago, with fossils being distributed
Nothosaurus
Extinct genus of reptiles
is an extinct genus of archosauromorph reptile which lived during the Triassic Period in Europe, Asia, and North America. It is recognizable by its extremely
Tanystropheus
group of gymnosperms in the Triassic period (245–202 million years ago). Fossil angiosperm-like pollen from the Middle Triassic (247.2–242.0 Ma) suggests
Fossil history of flowering plants
Fossil_history_of_flowering_plants
the anatomy of the ichthyopterygian specimen NSM-PV-20028 from the Lower Triassic Osawa Formation (Japan), assigned to cf. Utatsusaurus hataii, is published
2026_in_reptile_paleontology
Extinct genus of reptiles
is an extinct genus of archosauriform reptiles from the early to middle Triassic of South Africa. Remains have been found in the Cynognathus Assemblage
Erythrosuchus
the southwestern United States, preserving a very diverse fauna of Late Triassic (primarily Norian-age) animals and plants. This is a list of fossilized
Paleobiota of the Chinle Formation
Paleobiota_of_the_Chinle_Formation
Genus of reptiles
and P. alisonae, that lived in what is now North America during the Late Triassic. Postosuchus is a member of the clade Pseudosuchia, the lineage of archosaurs
Postosuchus
Extinct genus of reptiles
to the latest Ladinian stage of the late Middle Triassic, or the earliest Carnian of the Late Triassic. Luperosuchus was one of the largest carnivores
Luperosuchus
Clade of bird-like archosaur reptiles
avemetatarsalians to survive past the end of the Triassic, other groups flourished during the Triassic. The most basal (earliest-branching) and plesiomorphic
Avemetatarsalia
Extinct genus of horseshoe crabs
genus of horseshoe crab. The species V. tricki lived in the Olenekian age Triassic period approximately 245 million years ago North America, Idaho. The genus
Vaderlimulus
Extinct genus of reptiles
among the oldest representatives, that lived from the Lower to Middle Triassic in what are now North America and Europe. The first known fossils of this
Cymbospondylus
Extinct genus of temnospondyls
lizard") is an extinct genus of temnospondyl amphibian from the Middle Triassic of Europe. It remains one of the largest amphibians known in the fossil
Mastodonsaurus
Extinct group of Permo-Triassic therapsids
therapsids (mammals and their close extinct relatives) from the Permian and Triassic periods. The therocephalians ("beast-heads") are named after their large
Therocephalia
Extant clade of dinosaurs
alive today. Theropods first appeared during the Carnian age of the Late Triassic period 231.4 million years ago (Ma) and included the majority of large
Theropoda
Clade of reptiles
Silesauridae or Ornithischia. Saltopus, an enigmatic taxon from the Late Triassic of Scotland, has been placed closer to dinosaurs than Marasuchus, in a
Dinosauromorpha
Various classifications of Dinosauria
Dinosauria, and a handful of small Triassic taxa as bird-line archosaurs. Marasuchus and Lagerpeton, from the Triassic of South America, were believed to
Dinosaur_classification
Extinct order of reptiles
(Early Triassic) and early Anisian (early Middle Triassic) of Japan, China, Canada, and Spitsbergen (Norway). By the later part of the Middle Triassic, the
Ichthyopterygia
Mountain in Switzerland and Italy
fossil content, one of the best known records of marine life in the Middle Triassic period. The Italian region west of Poncione d'Arzo (Porto Ceresio) was
Monte_San_Giorgio
Extinct genus of reptiles
'pavement') is an extinct genus of rhynchosaur reptiles which lived during Late Triassic period. Like other rhynchosaurs, it was a heavily built archosauromorph
Hyperodapedon
Extinct clade of therapsids
They rebounded at beginning of the following Triassic, but subsequently declined during the Late Triassic and died out towards the end of that period.
Dicynodontia
Extinct genus of dinosaurs
"Southern Cross lizard") is a genus of herrerasaurid dinosaur from the Late Triassic of Brazil, found in the Santa Maria Formation. Colbert (1970) described
Staurikosaurus
Extinct genus of dinosaurs
lived approximately 210 million years ago during the later part of the Triassic Period, in what is now Germany. Procompsognathus was a small-sized, lightly
Procompsognathus
Extinct genus of dinosaurs
lived approximately 210 million years ago during the latter part of the Triassic Period in what is now Germany. Liliensternus was a bipedal, ground-dwelling
Liliensternus
Extinct family of dinosaur-like reptiles
Silesauridae is an extinct family of early dinosauriforms which lived during the Triassic Period. Their fossils have been found in Europe, North America, South America
Silesauridae
Mass extinction event c. 444 million years ago
nearly 85% of marine species. Under most tabulations, only the Permian–Triassic mass extinction exceeds the Late Ordovician mass extinction in biodiversity
Late Ordovician mass extinction
Late_Ordovician_mass_extinction
Extinct genus of dicynodonts
of dicynodonts that lived during the Carnian and Norian stages of the Triassic period (230–215 million years ago). Placerias belongs to a clade of dicynodonts
Placerias
Sedimentary basin in England
Sandbach–Knutsford Sub-basin to its northeast. The basin fill is mainly Permian and Triassic sandstones and mudstones, but it also incorporates economically important
Cheshire_Basin
Olav V Land. Triassic outcrops are exposed in a long and narrow belt between pre-Triassic sediments along the west coast and the post-Triassic sediments
Geology_of_Svalbard
Class of animals with milk-producing glands
originated from cynodonts, an advanced group of therapsids, during the Late Triassic to Early Jurassic. Mammals achieved their modern diversity in the Paleogene
Mammal
Extinct order of reptiles
Rhynchosaurs are a group of extinct herbivorous Triassic archosauromorph reptiles, belonging to the order Rhynchosauria. Members of the group are distinguished
Rhynchosauria
System of dividing geologic time in New Zealand
While also using the international geologic time scale, many nations–especially those with isolated and therefore non-standard prehistories–use their own
New Zealand geologic time scale
New_Zealand_geologic_time_scale
Lake in Quebec, Canada
Babel. The structure was created 214 (±1) million years ago, in the Late Triassic, by the impact of a meteorite 5 km (3 mi) in diameter. The lake and island
Manicouagan_Reservoir
Extinct order of heavily armoured reptiles
and non-avian dinosaurs. All known aetosaurs are restricted to the Late Triassic, and in some strata from this time they are among the most abundant fossil
Aetosauria
Genus of giant dicynodont therapsid
now Poland during the late Norian or earliest Rhaetian age of the Late Triassic Period, about 210–205 million years ago. Lisowicia is the largest known
Lisowicia
Extinct superfamily of dinosaurs
Coelophysoidea is an extinct clade of theropod dinosaurs common during the Late Triassic and Early Jurassic periods. They were widespread geographically, probably
Coelophysoidea
Paleoclimatological hypothesis
continued to shift toward one another and reached its maximum strength in the Triassic, when the continental surface area of Pangaea was at its peak. The megamonsoon
Pangean_megamonsoon
Extinct genus of reptiles
Silesaurus is a genus of silesaurid dinosauriform from the Late Triassic, of what is now Poland. The Krasiejów claypit near Opole, Poland, was first discovered
Silesaurus
Family of basal chelicerates
"living fossils", having changed little since they first appeared in the Triassic around 250 million years ago, and similar-looking fossil xiphosurans extend
Horseshoe_crab
during the Triassic period, between 243 and 233.23 million years ago. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction
List_of_dinosaur_genera
Largest continental igneous province on Earth
formed before Pangea broke up in the Mesozoic Era, near the end of the Triassic and the beginning of the Jurassic periods. The subsequent breakup of Pangea
Central Atlantic magmatic province
Central_Atlantic_magmatic_province
Geological formation in China
The Guiyang biota is an exceptionally preserved Early Triassic (approximately 250.8 million years ago) fossil assemblage from the Daye Formation near Guiyang
Guiyang_biota
First era of the Phanerozoic Eon
with the largest extinction event of the Phanerozoic Eon, the Permian–Triassic extinction event. The effects of this catastrophe were so devastating that
Paleozoic
Shield for the ventral and dorsal parts of turtles
of the Triassic turtle Proganochelys. OCLC 263164288. Asher, J. Lichtig; Spencer G., Lucas; Klein, Hendrik; Lovelace, David M. (2018). "Triassic turtle
Turtle_shell
North Carolina, United States), expanding known geographical range of Late Triassic poposauroids. McDavid (2025) and Pêgas, Bandeira & Silva (2025) discuss
2025 in archosaur paleontology
2025_in_archosaur_paleontology
Extinct genus of ichthyosaur reptile
from the Late Triassic. Specimens have been found in the United States, Canada, and China. Shastasaurus lived during the late Triassic period. The type
Shastasaurus
Genus of basal avemetatarsalians
armour") is an extinct genus of basal avemetatarsalian from the Middle/Upper Triassic Makay Formation (Isalo II beds) of Madagascar. The genus contains a single
Mambachiton
Extinct clade of dinosaurs
herbivores throughout much of the Mesozoic Era, from their origins in the Late Triassic (approximately 230 Ma) until their decline and extinction at the end of
Sauropodomorpha
Overview of the geology of Gower, Wales
The geology of the Gower Peninsula in South Wales is central to the area's character and to its appeal to visitors. The peninsula is formed almost entirely
Geology of the Gower Peninsula
Geology_of_the_Gower_Peninsula
Last known individual of a species or subspecies
Extinction events Major Ordovician–Silurian Late Devonian Permian–Triassic Triassic–Jurassic Cretaceous–Paleogene Holocene Timeline Other Great Oxidation
Endling
Extinct genus of cynodonts
which lived in what are now South Africa and Antarctica during the Early Triassic. The genus contains a single species, T. liorhinus. Similar to other therapsids
Thrinaxodon
Extinct genus of dicynodonts
Triassic (with skull up to 40 centimetres (16 in) long) and had a beak corneum. It lived in the Middle Triassic but disappeared in the Upper Triassic
Dinodontosaurus
Extinct genus of reptiles
Kudnu is an extinct genus of neodiapsid reptile from the Early Triassic Arcadia Formation of Australia. The type species is K. mackinlayi. The holotype
Kudnu
Extinction event around 260 million years ago
epoch of the Permian. Historically conflated with the better-known Permian–Triassic extinction, it was only recognised as a distinct event in 1994. Despite
Capitanian mass extinction event
Capitanian_mass_extinction_event
Genus of reptiles (fossil)
dinosaur from the Late Triassic of New Mexico. The only known fossil is a skull and neck fragments from deposits of the latest Triassic Chinle Formation at
Daemonosaurus
Extinct genus of reptiles
extinct genus of avemetatarsalian archosaur from the putatively Middle Triassic Manda Formation of Tanzania that may be the earliest known dinosaur. The
Nyasasaurus
TRIASSIC
TRIASSIC
TRIASSIC
TRIASSIC
Girl/Female
Teutonic American Greek German French
Battle maiden.
Girl/Female
Hindu, Indian, Kannada, Tamil, Telugu, Traditional
Goddess Laxmi
Boy/Male
Arabic
Like an Angel
Male
Egyptian
, the name of two sons of Rameses II.
Boy/Male
Hindu, Indian, Marathi
Lord Indra Weapons
Boy/Male
English
Bold guardian.
Boy/Male
Indian
Flower of Love
Girl/Female
Greek Latin
Daughter of Evenus.
Girl/Female
Gujarati, Hindu, Indian
Love
Boy/Male
Hindu
TRIASSIC
TRIASSIC
TRIASSIC
TRIASSIC
TRIASSIC
n.
A large extinct genus of labyrinthodonts, found in the European Triassic rocks.
n.
A fossil footprint; as, the ichnites in the Triassic sandstone.
n. pl.
An extinct order of reptiles found in the Permian and Triassic formations in South Africa. In some respects they resembled carnivorous mammals. Called also Theromorpha.
a.
Pertaining to, or of the same horizon as, certain Mesozoic strata of the Rhetian Alps. These strata are regarded as closing the Triassic period. See the Chart of Geology.
n.
An extensive genus of fossil ferns, of which species have been found from the Devonian to the Triassic formation.
a.
Specifically: Of or pertaining to, or characterizing, Triassic and Permian sandstones of red and other colors.
n.
A genus of very large fossil amphibians, of the Triassic period, having bony plates on the under side of the body. It is the type of the order Labyrinthodonta. Called also Mastodonsaurus.
n.
A silicified stem of tree fern, found in abundance in the Triassic sandstone.
n.
A term applied to many American Mesozoic strata, in which the characteristics of the Jurassic and Triassic periods appear to be blended.
n.
A kind of shell limestone, whose strata form the middle one of the three divisions of the Triassic formation in Germany. See Chart, under Geology.
n.
One of a group of extinct reptiles having the jaws armed with a horny beak, as in turtles, and in the genus Dicynodon, supporting also a pair of powerful tusks. Their remains are found in triassic strata of South Africa and India.
n.
An extinct genus of small Triassic mammals, the oldest yet found in European strata.
n. pl.
An extinct order of Amphibia, including the typical genus Labyrinthodon, and many other allied forms, from the Carboniferous, Permian, and Triassic formations. By recent writers they are divided into two or more orders. See Stegocephala.
n.
The upper division of the European Triassic. See Chart of Geology.
n.
One of an extinct genus of fossil cephalopods, allied to the Ammonites. The earliest forms are found in the Devonian formation, the latest, in the Triassic.
n.
An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones.
a.
Of the age of, or pertaining to, the Trias.
n.
A small extinct triassic mammal from North Carolina, the earliest yet found in America.
n.
The Triassic formation.