MegalosauridaeMegalosauridae is a monophyleticfamily of carnivoroustheropod dinosaurs within the group Megalosauroidea. Appearing in the Middle Jurassic, megalosaurids were among the first major radiation of large theropod dinosaurs. They were a relatively primitive group of basal tetanurans containing two main subfamilies, Megalosaurinae and Afrovenatorinae, along with the basal genus Eustreptospondylus, an unresolved taxon which differs from both subfamilies.
GermanyCountry in EuropeGermany, officially the Federal Republic of Germany, is a country in Western and Central Europe. It lies between the Baltic Sea and the North Sea to the north with the Alps to the south. Its 16 constituent states have a total population of over 83 million, making it the most populous member state of the European Union (EU).
DinosaurDinosaurs are a diverse group of warm-blooded reptiles of the clade Dinosauria. They existed through most of the Mesozoic era, first appearing early in the Triassic period. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya and their dominance continued throughout the Jurassic and Cretaceous periods.
TithonianIn the geological timescale, the Tithonian is the latest age of the Late Jurassic Epoch and the uppermost stage of the Upper Jurassic Series. It spans the time between 149.2 ±0.7 Ma and 143.1 ±0.6 (million years ago). It is preceded by the Kimmeridgian and followed by the Berriasian (part of the Cretaceous).
TheropodaTheropoda (; from ancient Greek θηρίο- ποδός [θηρίον, (therion) "wild beast"; πούς, ποδός (pous, podos) "foot"]) is one of the three major clades of dinosaurs, alongside Ornithischia and Sauropodomorpha. Theropods, both extant and extinct, are characterized by hollow bones and three toes and claws on each limb. They are generally classed as saurischian dinosaurs, placing them closer to sauropodomorphs than to ornithischians.
PortugalCountry in Southwestern EuropePortugal, officially the Portuguese Republic, is a country in Southwestern Europe. Mainland Portugal is located on the southwestern portion of the Iberian Peninsula, and bordered by Spain to the north and east. Portugal also includes the archipelagos of Madeira and the Azores in the Atlantic Ocean. The country has a population of 11.4 million, and Lisbon, its capital, is the largest city.
Middle JurassicSubdivision of the Jurassic according to the ICS, as of 2024.Vertical axis scale: Millions of years agoEtymologyName formalityFormalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitEpochStratigraphic unitSeriesTime span formalityFormalLower boundary definitionFAD of the Ammonites and Lower boundary GSSPFuentelsaz, Spain41°10′15″N1°50′00″W / 41.1708°N 1.8333°W / 41.1708; -1.8333Lower GSSP ratified2000Upper boundary definitionNot formally definedUpper boundary definition candidatesHorizon of Ammonite Cardioceras redcliffense.Upper boundary GSSP candidate section(s)Redcliff Point, Dorset, UK, Provence, FranceThe Middle Jurassic is the second epoch of the JurassicPeriod.
GenusGenus (; pl.: genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. E.g. Panthera leo (lion) and Panthera onca (jaguar) are two species within the genus Panthera. Panthera is a genus within the family Felidae.CallovianIn the geologic timescale, the Callovian is an age and stage in the Middle Jurassic, lasting between 165.3 ± 1.1 Ma (million years ago) and 161.5 ± 1.0 Ma. It is the last stage of the Middle Jurassic, following the Bathonian and preceding the Oxfordian.
Million years agoMillion years ago, abbreviated as Mya, Myr (megayear), or Ma (megaannum), is a unit of time equal to 1,000,000 years (i.e. 1×10 years). UsageMyr is in common use in fields such as Earth science and cosmology. Myr is also used with Mya or Ma. Together they make a reference system, one to a quantity, the other to a particular point in a year numbering system that is time before the present. Myr is deprecated in geology, but in astronomyMyr is standard.
Late JurassicThe Late Jurassic is the third epoch of the Jurassic period, and it spans the geologic time from 161.5 ± 1.0 to 143.1 ± 0.6 million years ago (Ma), which is preserved in Upper Jurassic strata. In European lithostratigraphy, the name "Malm" indicates rocks of Late Jurassic age.
ColoradoU.S. stateState in the United StatesColorado is a landlocked state in the Mountain West subregion of the Western United States. It is part of the Southwestern United States, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas to the east, and Oklahoma to the southeast.*As an Amazon Associate I earn from qualifying purchases.