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Island continent that existed until the end of the Late Cretaceous period
Laramidia was an island continent that existed during the Late Cretaceous period (99.6–66 Ma), when the Western Interior Seaway split the continent of
Laramidia
Mesozoic land mass separated from Laramidia to the west by the Western Interior Seaway
(named for the Appalachian Mountains), an island land mass separated from Laramidia to the west by the Western Interior Seaway, and from Hudsonia by the Hudson
Appalachia_(landmass)
Genus of tyrannosaurid dinosaur from the Late Cretaceous period
of the genera Dynamoterror from southern Laramidia (New Mexico) and Thanatotheristes from northern Laramidia (Alberta), and they were able to replicate
Lythronax
Dinosaur genus from the Late Cretaceous period
Kaiparowits Formation dates to the late Campanian age and was deposited on Laramidia, an island continent, when North America was divided at the center by
Kosmoceratops
Extinct genus of dinosaurs
Kaiparowits Formation dates to the late Campanian age and was deposited on Laramidia, an island continent, when North America was divided at the center by
Nasutoceratops
Extinct subfamily of dinosaurs
Centrosaurine fossil remains are known primarily from the northern region of Laramidia (modern day Alberta, Montana, and Alaska) but isolated taxa have been
Centrosaurinae
Daspletosaurin tyrannosaurid of the mid-Campanian
"harvester") is a genus of tyrannosaurid dinosaur from the Late Cretaceous of Laramidia, approximately 80.1-79.5 Ma. Thanatotheristes contains only one species
Thanatotheristes
Genus of Late Cretaceous theropod
western North America, on what was then an island continent known as Laramidia. Tyrannosaurus had a much wider range than other tyrannosaurids. Fossils
Tyrannosaurus
Genus of ceratopsid dinosaur from North America
from the Two Medicine Formation and lived in the island continent of Laramidia. As a ceratopsian, Achelousaurus would have been a herbivore and it appears
Achelousaurus
Third and last period of the Mesozoic Era
separated the elevated areas of Laramidia in the west and Appalachia in the east. Three dinosaur clades found in Laramidia (troodontids, therizinosaurids
Cretaceous
Mostly submerged continental crust area in Oceania
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
Zealandia
Majority of lands of the Western Hemisphere
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
New_World
Land mass of Cretaceous North America
Cretaceous (100.5 to 66 million years ago). The island was separated from Laramidia to the west by the Western Interior Seaway, and separated from Appalachia
Hudsonia_(landmass)
Prehistoric inland sea that split the continent of North America
of North America, splitting the continent into two major landmasses, Laramidia to the west and Appalachia to the east, as well as Hudsonia to the north
Western_Interior_Seaway
Family of dinosaurs including Triceratops and relatives
known from western North America, which formed the island continent of Laramidia during most of the Late Cretaceous. Ceratopsids are characterized by beaks
Ceratopsidae
Landmass corresponding to Afro–Eurasia
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
Old_World
Animated children's television series
they travel in the zeppelin. "Laramidia (The Dinosaur Big City)" – All the dinosaurs get together and sing about Laramidia, also known as the Dinosaur Big
Dinosaur_Train
continent of North America into two landmasses; one in the west named Laramidia and Appalachia in the east. Since they were separated from each other
List_of_Appalachian_dinosaurs
Failed microcontinent between Greenland and Canada
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
Davis Strait proto-microcontinent
Davis_Strait_proto-microcontinent
Fictional island in Plato's works
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
Atlantis
Genus of ceratopsian dinosaurs
that this clade was very diverse during the Late Cretaceous of northern Laramidia. The Lokiceratops holotype specimen, EMK 0012, was discovered by Mark
Lokiceratops
Extinct genus of tyrannosaur dinosaurs
of small tyrannosauroid theropod from the Late Cretaceous of southern Laramidia. It contains a single species, Suskityrannus hazelae, and the type specimen
Suskityrannus
Extinct genus of dinosaurs
Furthermore, in order to reach southern Laramidia from Asia, Alamosaurus would have had to cross through Northern Laramidia, which contains no known sauropod
Alamosaurus
Extinct order of dinosaurs
al. (2013) examined herbivore coexistence on the island continent of Laramidia during the Late Cretaceous. It was concluded that ankylosaurs were generally
Ankylosauria
Subdivision of Cretaceous Period
divided North America into eastern and western halves; Appalachia and Laramidia. India maintained a northward course towards Asia. In the Southern Hemisphere
Late_Cretaceous
Extinct genus of dinosaurs
Cretaceous, North America was divided into two continents; Appalachia and Laramidia. The breakup of North America into these continents spurred the evolution
Dryptosaurus
Extinct subfamily of dinosaurs
frills.[citation needed] Chasmosaurines evolved in western North America (Laramidia). They are currently known definitively from rocks in western Canada,
Chasmosaurinae
Hypothetical continent
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
Terra_Australis
Genus of Late Cretaceous dinosaur
Cretaceous period, about 68 to 66 million years ago on the island continent of Laramidia, now forming western North America. It was one of the last-known non-avian
Triceratops
Craton forming the geological core of North America
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
Laurentia
Major seaway of North America during the Cretaceous Period
divided North America into eastern and western landmasses (Appalachia and Laramidia, respectively), the Hudson Seaway had major impacts on climate and migration
Hudson_Seaway
Genus of a giant crocodylian
rugosus from Appalachia and the larger D. hatcheri/riograndensis from Laramidia, characterized by differences of the shape of their osteoderms and teeth
Deinosuchus
Cratonic rock body which makes up most of the continent Antarctica
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
East_Antarctic_Shield
Extinct family of dinosaurs
supports the hypothesis that Appalachia was isolated from Western Europe and Laramidia for an extended period during the Late Cretaceous, resulting in an endemic
Leptoceratopsidae
Extinct genus of dinosaurs
Seaway was at its widest extent, almost completely isolating southern Laramidia from the rest of North America. The area where dinosaurs lived included
Diabloceratops
2025 British television documentary series
baby female Triceratops, nicknamed Clover, wanders alone in prehistoric Laramidia. She encounters a nest-guarding female Infernodrakon who is eaten by a
Walking with Dinosaurs (2025 TV series)
Walking_with_Dinosaurs_(2025_TV_series)
Genus of tyrannosaurid dinosaur from Late Cretaceous period
"frightful lizard") is a genus of tyrannosaurid dinosaur that lived in Laramidia between about 77 and 74.4 million years ago, during the Late Cretaceous
Daspletosaurus
Extinct genus of reptiles
the few Late Cretaceous non-avian dinosaurs known from both Asia and Laramidia. A specimen from Alberta has been referred to the genus without being
Qiupalong
Extinct genus of marine lizard from the Late Cretaceous
000 ft). Extensive drainage from the neighboring continents, Appalachia and Laramidia, brought in vast amounts of sediment. Together with the formation of a
Mosasaurus
Genus of azhdarchid pterosaurs from the Late Cretaceous
been considered characteristic of the fauna of the Lancian of southern Laramidia, with Quetzalcoatlus noted in association despite its relative inabundance
Quetzalcoatlus
Genus of armored ankylosaurine dinosaurs
is of considerable size, being only surpassed among the ankylosaurs of Laramidia (western North America) by the three known skulls of Ankylosaurus, specimens
Zuul
Ankylosaurid dinosaur genus from Late Cretaceous Utah
from the most complete ankylosaur specimen ever discovered from southern Laramidia, including a complete skull, tail club, a number of osteoderms, limb elements
Akainacephalus
Genus of theropod dinosaurs
tyrannosaurs which migrated to the other North American island continent, Laramidia, with the recession of the Western Interior Seaway. Nanotyrannus is based
Nanotyrannus
Extinct genus of dinosaurs
Cretaceous, the site within the Kaiparowits Formation was located on Laramidia near its eastern shore on the Western Interior Seaway, a large inland
Teratophoneus
Hadrosaurid ornithopod dinosaur genus from Late Cretaceous Period
Seaway, a large inland sea that split North America into two landmasses, Laramidia to the west and Appalachia to the east. The plateau where dinosaurs lived
Parasaurolophus
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
List_of_Indigenous_peoples
Extinct genus of dinosaurs
Augustynolophus have been found only in California, which was a part of Laramidia, among the best locations for dinosaur fossils. There are currently two
Augustynolophus
Extinct family of dinosaurs
al. (2013) examined herbivore coexistence on the island continent of Laramidia, during the Late Cretaceous. It was concluded that hadrosaurids could
Hadrosauridae
Genus of deinocheirid dinosaur (fossil)
family Deinocheiridae and is the only member of that clade known from Laramidia. During the 1990s, ornithomimosaur fossils were discovered at three sites
Paraxenisaurus
Hierarchical outline list of articles related to plate tectonics
South America Appalachia (Mesozoic) – Mesozoic land mass separated from Laramidia to the west by the Western Interior SeawayPages displaying short descriptions
Outline_of_plate_tectonics
Rock formation in the United States
formed from alluvial floodplains of large rivers in coastal southern Laramidia; sandstone beds are the deposit of rivers, and mudstone beds represent
Kaiparowits_Formation
and interpreted as indicative of provincialism of fish assemblages from Laramidia dating to the Campanian-Maastrichtian transition. López-Galán, Ferrón
2026_in_paleoichthyology
Geological Formation in Colorado
the Mesaverde group. The formation was located on the eastern coast of Laramidia and was deposited by a fluvio-deltaic environment during the Campanian/Maastrichtian
Williams_Fork_Formation
Extinct clade of tyrannosaurid dinosaurs
is an extinct clade (tribe) of tyrannosaurine dinosaurs that lived in Laramidia during the Late Cretaceous (Middle Campanian) period. It consists of two
Daspletosaurini
Extinct genus of reptiles
reference to the species' southern occurrence in the Cretaceous landmass Laramidia. During the 1980s, a team from UNAM's Geological Institute, including
Latirhinus
Uppermost member of the Belly River Group geologic unit in Alberta, Canada
Phillip J.; Loewen, Mark A. (2014). "A New chasmosaurine from northern Laramidia expands frill disparity in ceratopsid dinosaurs". Naturwissenschaften
Dinosaur_Park_Formation
Extinct genus of dinosaurs
Sampson e.a. in 2010. Chasmosaurus shared its habitat, the east coast of Laramidia, with successive species of Centrosaurus. A certain niche partitioning
Chasmosaurus
Fossil flora and fauna of North American site
Formation, northwestern Colorado, and evidence for provinciality across Laramidia at the Campanian/Maastrichtian boundary". Cretaceous Research. 182 106313
Paleobiota of the Hell Creek Formation
Paleobiota_of_the_Hell_Creek_Formation
Geological formation in the United States
Formation. Its location at the changing conjunction of the eastern coast of Laramidia and the adjacent western shallows of the Western Interior Seaway led to
Hell_Creek_Formation
Fossil-bearing geologic formation in Montana, part of the Judith River Group
Phillip J.; Loewen, Mark A. (2014). "A New chasmosaurine from northern Laramidia expands frill disparity in ceratopsid dinosaurs". Naturwissenschaften
Judith_River_Formation
localities (Sonora, Mexico), providing evidence of presence in southern Laramidia of members of the tribe Kritosaurini related to "secernosaurs" from Patagonia
2026 in archosaur paleontology
2026_in_archosaur_paleontology
Ceratopsian dinosaur genus from Upper Cretaceous period
Butte. The animals were living on a narrow strip on the east-coast of Laramidia, bordering the Western Interior Seaway and constrained in the west by
Einiosaurus
French-Canadian and Métis coureur des bois
the city of Laramie, Fort Laramie, Laramie Peak, and Laramie County. Laramidia, an island continent in the Late Cretaceous, was named after the Laramide
Jacques_La_Ramée
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
List of sovereign states and dependent territories by continent (data file)
List_of_sovereign_states_and_dependent_territories_by_continent_(data_file)
Extinct genus of dinosaurs
climate-related separation of flora between the northern and southern parts of Laramidia during the Campanian. Particularly, in the Texan Aguja Formation, dicotyledons
Yehuecauhceratops
Fossil bed in near Ellisdale, New Jersey
known as "Laramidia", and an eastern continent named "Appalachia". Although a rich and diverse assemblage of taxa has been found from Laramidia, little
Ellisdale_Fossil_Site
Extinct genus of dinosaurs
al. (2013) examined herbivore coexistence on the island continent of Laramidia, during the Late Cretaceous. It was concluded that small ornithischians
Orodromeus
2011 (2011-08-22) "Laramidia" (Cretaceous Time period) "Dinosaur Big City, Part 4" Paleontologists The Pteranadon family explore Laramidia while looking for
List of Dinosaur Train episodes
List_of_Dinosaur_Train_episodes
Extinct genus of dinosaurs
for over 2 million years. In the early Maastrichtian, the continent of Laramidia (today North America) was about 8 degrees of latitude further North than
Atrociraptor
Extinct genus of dinosaurs
ornithomimids, consistent with a single radiation of ornithomimids in Laramidia during the Campanian. 2016 in paleontology Timeline of ornithomimosaur
Rativates
Extinct genus of dinosaurs
Seaway was at its widest extent, almost completely isolating southern Laramidia off from the rest of North America. The area where dinosaurs lived included
Acristavus
Extinct genus of reptiles
hypothesized to be the last member of the Chasmosaurus clade from northern Laramidia, with the last representative of the clade being its close relative Kosmoceratops
Vagaceratops
Extinct genus of dinosaurs
and the lack of diagnostic early tyrannosaurid material from northern Laramidia. However, Voris et al. (2020) later assigned Dynamoterror within a clade
Dynamoterror
Craton Cuyania East Antarctica Hudsonia Euramerica Kalaharia Kazakhstania Laramidia Laurentia North China Pampia Sahul Siberia South China Submerged continent/lands
List of sovereign states and dependent territories by continent
List_of_sovereign_states_and_dependent_territories_by_continent
Genus of ankylosaurid dinosaur from the Late Cretaceous period
between Asia and Laramidia. Provincialism in the sense of a faunal separation between the northern and southern regions of Laramidia cannot be deduced
Ziapelta
Extinct genus of dinosaurs
Currie, P. J.; Loewen, M. A. (2014). "A new chasmosaurine from northern Laramidia expands frill disparity in ceratopsid dinosaurs". Naturwissenschaften
Mercuriceratops
Extinct genus of dinosaurs
Seaway was at its widest extent, almost completely isolating southern Laramidia from the rest of North America. The area where dinosaurs lived included
Machairoceratops
Extinct genus of dinosaurs
Currie, P. J.; Loewen, M. A. (2014). "A new chasmosaurine from northern Laramidia expands frill disparity in ceratopsid dinosaurs". Naturwissenschaften
Medusaceratops
Extinct genus of dinosaurs
Seaway, a large inland sea that split North America into two landmasses, Laramidia to the west and Appalachia to the east. The plateau where dinosaurs lived
Utahceratops
Genus of ceratopsian dinosaurs
suggested that a clade containing these three genera was endemic to southern Laramidia. Dinosaurs portal Mexico portal Paleontology portal Timeline of ceratopsian
Coahuilaceratops
Extinct genus of dinosaurs
specimen. Dineobellator is part of the Ojo Alamo Formation fauna in southern Laramidia, at the time a lush floodplain dominated by wetlands and riparian gymnosperm
Dineobellator
Order of fishes
North America, with Primuluchara having a very wide distribution across Laramidia, ranging from Texas to as far north as southern Canada (Dinosaur Park
Characiformes
few Late Cretaceous non-avian dinosaur taxa known from both Asia and Laramidia Qiupanykus 2018 Qiupa Formation (Late Cretaceous, Maastrichtian) China
List_of_Asian_dinosaurs
Extinct genus of ornithopod dinosaurs
from this formation. Like most fluvial sediments from the Campanian of Laramidia, the Cerro del Pueblo Formation was home to a wide array of turtles including
Coahuilasaurus
Genus of hadrosaurid dinosaurs
illustrating the high diversity of saurolophines during the Cretaceous in Laramidia. The results of the Bayesian analysis of Dalman and colleagues (2025)
Ahshislesaurus
Extinct subfamily of dinosaurs
lambeosaurines of the tribe Corythosauria colonized the landmass of Laramidia (modern western North America) via Beringia and spread as far south as
Lambeosaurinae
Extinct clade of dinosaurs
al. (2013) examined herbivore coexistence on the island continent of Laramidia, during the Late Cretaceous and concluded that pachycephalosaurids were
Pachycephalosauria
Geologic formation in New Mexico
event based on this finding, and that Maastrichtian dinosaur faunas from Laramidia were not uniform in the entire continent. Dinosaur remains are among the
Ojo_Alamo_Formation
Extinct order of reptiles
along the western coast of the Western Interior Seaway on the island of Laramidia. Indeterminate remains of neochoristoderes are also known from the Canadian
Choristodera
Canadian paleontologist
horned dinosaur from the Late Cretaceous (late Campanian) of southern Laramidia". Proceedings of the Royal Society B: Biological Sciences. 280 (1766)
Scott_D._Sampson
Extinct genus of mammals
throughout the interior west of North America (the former landmass of Laramidia) throughout the Late Cretaceous, from the late Santonian to the end of
Cimolomys
Extinct genus of dinosaurs
Torosaurus might be identical to Triceratops. In the Maastrichtian age of Laramidia, two closely related chasmosaurines shared the same habitat. The only
Torosaurus
a unique clade of chasmosaurine ceratopsids only known from southern Laramidia Silvisaurus 1960 Dakota Formation (Early Cretaceous to Late Cretaceous
List of North American dinosaurs
List_of_North_American_dinosaurs
Geologic formation in the United States
Utah, U.S.A. and the age of early Campanian vertebrates from southern Laramidia". Palaeogeography, Palaeoclimatology, Palaeoecology. 591 110876. Bibcode:2022PPP
Wahweap_Formation
Anoxia events in the Western Interior Seaway
seaway that divided North America in two island continents, Appalachia and Laramidia (see map). During these anoxic events much of the water column was depleted
Western Interior Seaway anoxia
Western_Interior_Seaway_anoxia
Extinct family of mammals
may have been semi-aquatic. The most well described forms are found in Laramidia, but they are also present on Appalachian and South American sites, further
Stagodontidae
Extinct species of dinosaur
Seaway, a large inland sea that split North America into two landmasses, Laramidia to the west and Appalachia to the east. The plateau where dinosaurs lived
Talos_sampsoni
event, as well as indicating that Maastrichtian dinosaur faunas from Laramidia were not uniform in the entire continent. Weaver et al. (2025) link the
2025 in archosaur paleontology
2025_in_archosaur_paleontology
Extinct clade of dinosaurs
arrived before or after the Western Interior Seaway split Appalachia from Laramidia. The pattern the evolution of the three major subfamilies is also controversial
Eudromaeosauria
Geological formation in North America
Formation, northwestern Colorado, and evidence for provinciality across Laramidia at the Campanian/Maastrichtian boundary". Cretaceous Research 106313.
Aguja_Formation
LARAMIDIA
LARAMIDIA
LARAMIDIA
LARAMIDIA
Girl/Female
Biblical
Abundance of knowledge.
Girl/Female
Biblical
Pearl, precious stone, the face.
Male
Finnish
Finnish form of Greek Paulos, PAULI means "small."
Girl/Female
Indian, Tamil, Telugu
Clever; Beautiful; Cute
Girl/Female
Tamil
Durga, Opening wide, Tearing
Girl/Female
Tamil
Annapurni | அநà¯à®¨à®¾à®ªà¯à®°à¯à®¨à¯€
Goddess of food
Female
English
Variant spelling of English Terrie, TERRI means "harvester."
Male
Chinese
the roc, a fabulous bird.
Girl/Female
Arabic, Muslim, Sindhi
Dazzling; Bright
Girl/Female
African, Arabic, Hindu, Indian, Marathi, Muslim, Parsi, Swahili, Tamil
Young Lady; Brilliant Beauty
LARAMIDIA
LARAMIDIA
LARAMIDIA
LARAMIDIA
LARAMIDIA