parent_taxon paratypothorax
A scute or scutum ( Latin " scutum ", plural : " scuta " " shield ") is a bony external plate or scale overlaid with horn , as on the shell of a turtle , the skin of crocodilians , and the feet of birds . The term is also used to describe the anterior portion of the mesonotum in ___MASK78___ . A genus ( genera ) is a taxonomic rank used in the biological classification of living and fossil organisms in biology . In the hierarchy of biological classification , genus comes above species and below family . In binomial nomenclature , the genus name forms the first part of the binomial species name for each species within the genus . ___MASK53___ is one of the two subfamilies of aetosaurs , the other being ___MASK1___ . It is a stem - based taxon defined as all aetosaurs more closely related to " Aetosaurus " than to the last common ancestor of " Aetosaurus " and " Desmatosuchus ". The only synapomorphy that diagnoses the clade ___MASK53___ is the medial offset of the dorsal eminences of the paramedian osteoderms . A phylogenetic study in 2012 found ___MASK53___ to be paraphyletic , with " Aetosaurus " being the basal - most stagonolepidid and aetosaurines like " Calyptosuchus ", " Neoaetosauroides ", and the newly described " Aetobarbakinoides " being successively more derived taxa leading up to a clade containing ___MASK1___ and Typothoracisinae . Under this phylogeny , most traditional aetosaurines are more closely related to " Desmatosuchus " than they are to " Aetosaurus ", and the clade ___MASK53___ can only include " Aetosaurus ". The Triassic is a geologic period and system which spans 50 . 9 million years from the end of the Permian Period million years ago ( ___MASK30___ ), to the beginning of the Jurassic Period ___MASK30___ . The Triassic is the first period of the Mesozoic Era . Both the start and end of the period are marked by major extinction events . The Triassic was named in 1834 by Friedrich von Alberti , after the three distinct rock layers (" tri " meaning " three ") that are found throughout Germany and northwestern Europe  red beds , capped by marine limestone , followed by a series of terrestrial mud - and sandstones  called the " Trias ". ___MASK1___ is one of the two subfamilies of aetosaurs , the other being Aetosaurinae . It is a stem - based taxon defined as all aetosaurs more closely related to " Desmatosuchus " than the last common ancestor of " Desmatosuchus " and " Stagonolepis ". All synapomorphies that diagnose the clade can be found in the osteoderms . These include tongue - and - groove articulations for lateral plates present in dorsal presacral paramedian plates and large spikes on the lateral cervical , dorsal , and caudal plates . Frankfurt am Main is a metropolis and the largest city in the German state of Hesse and the fifth - largest city in Germany , with a 2015 population of 731 , 095 within its administrative boundaries , and 2 . 3 million in its urban ___MASK32___ . The city is at the centre of the larger Frankfurt Rhine - Main Metropolitan Region , which has a population of 5 . 8 million and is Germany ' s second - largest metropolitan region after Rhine - Ruhr . Since the enlargement of the European Union in 2013 , the geographic centre of the EU is about to the east of Frankfurt ' s CBD , the Bankenviertel . Frankfurt is culturally and ethnically diverse , with around half of the population , and a majority of young people , having a migration background . A quarter of the population are foreign nationals , including many expatriates . Stuttgart ( Swabian : " Schduagert "), often nicknamed the "" Schwabenmetropole "" in reference to its location in the center of Swabia and the local dialect spoken by some natives , is the capital and largest city of the German state of Baden - Württemberg . It is located on the Neckar river in a fertile valley locally known as the " Stuttgarter Kessel " an hour from the Swabian Jura and the Black Forest . Stuttgart ' s name comes from the Old High German word "" Stuogarten "," or " stud farm "  a reference to the city ' s founding in 950 AD as a stud farm . Stuttgart  s urban ___MASK32___ has a population of 623 , 738 , and a further making it the sixth largest city in Germany , 2 . 7 million people live in the city  s administrative region , and another 5 . 3 million people in its metropolitan ___MASK32___ , making it the fourth largest metropolitan ___MASK32___ in Germany . The Jurassic ( from Jura Mountains ) is a geologic period and system that spans 56 . 3 million years from the end of the Triassic Period million years ago ( ___MASK30___ ) to the beginning of the Cretaceous Period ___MASK30___ . The Jurassic constitutes the middle period of the Mesozoic Era , also known as the Age of Reptiles . The start of the period is marked by the major Triassic  Jurassic extinction event . Two other extinction events occurred during the period : the Pliensbachian / Toarcian event in the Early Jurassic , and the Tithonian event at the end ; however , neither event ranks among the " Big Five " mass extinctions . Osteoderms are bony deposits forming scales , plates or other structures in the dermal layers of the skin . Osteoderms are found in many groups of extant and extinct reptiles and amphibians , including lizards , crocodilians , frogs , temnospondyls , various groups of dinosaurs ( most notably ankylosaurs and stegosaurians ), phytosaurs , aetosaurs , placodonts , and hupehsuchians ( marine reptiles with possible ichthyosaur affinities ). Paratypothorax is an extinct genus of ___MASK41___ , known by one species , Paratypothorax andressi . It was first named in 1985 from specimens collected from the Lower Stubensandstein in Germany and was also noted to be present in the Chinle Group of the southwestern United States in both the Dockum and Chinle Formations , which are latest Carnian and Rhaetian in age , respectively . The genus was described from osteoderms that were initially referred to the phytosaur Belodon kappfi . Material from Paratypothorax has also been reported from the Norian - age Fleming Fjord Formation in Greenland . Paratypothorax possesses paramedian scutes that are wide , strap - like , and have grooves and pits on them forming radial patterns . Like other typothoracisines such as Typothorax , the lateral scutes bear large horns that are posteriorly hooked . The rear of each scute is overlapped by a prominent knob . Greenland is an autonomous constituent country within the Danish Realm between the Arctic and Atlantic Oceans , east of the Canadian Arctic Archipelago . Though physiographically a part of the continent of North America , Greenland has been politically and culturally associated with Europe ( specifically Norway and Denmark , the colonial powers , as well as the nearby island of Iceland ) for more than a millennium . The majority of its residents are Inuit , whose ancestors migrated began migrating from the Canadian mainland in the 13th century , gradually settling across the island . The Republic of Iceland , " Lýðveldið Ísland " in Icelandic , is a Nordic island country in the North Atlantic Ocean . It has a population of and an ___MASK32___ of , making it the most sparsely populated country in Europe . The capital and largest city is Reykjavík . Reykjavík and the surrounding ___MASK24___ in the southwest of the country are home to over two - thirds of the population . Iceland is volcanically and geologically active . The interior consists of a plateau characterised by sand and lava fields , mountains and glaciers , while many glacial rivers flow to the sea through the lowlands . Iceland is warmed by the Gulf Stream and has a temperate climate , despite a high latitude just outside the Arctic Circle . Its high latitude and marine influence still keeps summers chilly , with most of the archipelago having a tundra climate . Typothorax is an extinct genus of typothoracisine ___MASK41___ that lived in the Late Triassic . Its remains have been found in North America . Two species are known : " T . coccinarum ", the type species , and " T . antiquum ". Archosaurs are a group of ___MASK46___ amniotes whose living representatives consist of birds and crocodilians . This group also includes all extinct non - avian dinosaurs , extinct crocodilian relatives , and pterosaurs . Archosauria , the ___MASK37___ clade , is a crown group that includes the most recent common ancestor of living birds and crocodilians . It includes two main clades : Pseudosuchia , which includes crocodilians and their extinct relatives , and Ornithosuchia , which includes birds and their extinct relatives ( such as non - avian dinosaurs and pterosaurs ). The European Union ( EU ) is a political and economic union of member states that are located primarily in Europe . It has an ___MASK32___ of , and an estimated population of over 510 million . The EU has developed an internal single market through a standardised system of laws that apply in all member states . EU policies aim to ensure the free movement of people , goods , services , and capital within the internal market , enact legislation in justice and home affairs , and maintain common policies on trade , agriculture , fisheries , and regional development . Within the Schengen ___MASK32___ , passport controls have been abolished . A monetary union was established in 1999 and came into full force in 2002 , and is composed of 19 EU member states which use the euro currency . ___MASK78___ ( from Latin ', a calque of Greek ['], " cut into sections ") are a class of invertebrates within the arthropod phylum that have a chitinous exoskeleton , a three - part body ( head , ___MASK28___ and abdomen ), three pairs of jointed legs , compound eyes and one pair of antennae . They are the most diverse group of animals on the planet , including more than a million described species and representing more than half of all known living organisms . The number of extant species is estimated at between six and ten million , and potentially represent over 90 % of the differing animal life forms on Earth . ___MASK78___ may be found in nearly all environments , although only a small number of species reside in the oceans , a habitat dominated by another arthropod group , crustaceans . The Rhaetian is , in geochronology , the latest age of the Triassic period or in chronostratigraphy the uppermost stage of the Triassic system . It lasted from to million years ago . It was preceded by the Norian and succeeded by the Hettangian ( the lowermost stage or earliest age of the Jurassic ). Berlin is the capital and the largest city of Germany as well as one of its constituent 16 states . With a population of approximately 3 . 5 million people , Berlin is the second most populous city proper and the seventh most populous urban ___MASK32___ in the European Union . Located in northeastern Germany on the banks of rivers Spree and Havel , it is the centre of the Berlin - Brandenburg Metropolitan Region , which has about 6 million residents from more than 180 nations . Due to its location in the European Plain , Berlin is influenced by a temperate seasonal climate . Around one - third of the city ' s ___MASK32___ is composed of forests , parks , gardens , rivers and lakes . Gars ( or garpike ) are members of the ___MASK17___ ( or Semionotiformes ), an ancient order of ray - finned fish ; fossils from this order are known from the late Cretaceous onwards . The family Lepisosteidae includes seven living species of fish in two genera that inhabit fresh , brackish , and occasionally marine , waters of eastern North America , Central America and the Caribbean islands . Gars have elongated bodies that are heavily armored with ganoid scales , and fronted by similarly elongated jaws filled with long , sharp teeth . All of the gars are relatively large fish , but the ___MASK56___ ___MASK77___ (" Atractosteus spatula ") is the largest , as specimens have been reported to be in length ; however , they typically grow to and weigh over . Unusually , their vascularised swim bladders can function as lungs , and most gars surface periodically to take a gulp of air . ___MASK77___ flesh is edible and the hard skin and scales of gars are used by humans . Aetosaurs (" ___MASK41___ " ; order name " Aetosauria " ; from Greek , ( aetos , " eagle ") and ( sauros , " ___MASK26___ ")) are an extinct order of heavily armoured , medium - to large - sized Late Triassic herbivorous archosaurs . They have small heads , upturned snouts , erect limbs , and a body covered by plate - like scutes . All aetosaurs belong to the family ___MASK90___ . Two distinct subdivisions of aetosaurs are currently recognized , Desmatosuchinae and Aetosaurinae , based primarily on differences in the morphology of the bony scutes of the two groups . Over 20 genera of aetosaurs have been described , and recently there has been controversy regarding the description of some of these genera . In biology , an organism is any contiguous living system , such as an ___MASK55___ , ___MASK23___ , fungus , archaeon , or bacterium . All known types of organisms are capable of some degree of response to stimuli , reproduction , growth and development and homeostasis . An organism consists of one or more cells ; when it has one cell it is known as a unicellular organism ; and when it has more than one it is known as a multicellular organism . Most unicellular organisms are of microscopic scale and are thus loosely described as microorganisms . Humans are multicellular organisms composed of many trillions of cells grouped into specialized tissues and organs . Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in central - western Europe . It includes 16 constituent states , covers an ___MASK32___ of , and has a largely temperate seasonal climate . With about 82 million inhabitants , Germany is the most populous member state of the European Union . After the United States , it is the second most popular immigration destination in the world . Germany ' s capital and largest metropolis is Berlin . Other major cities include Hamburg , Munich , Cologne , Frankfurt , Stuttgart and Düsseldorf . The ___MASK3___ ( or Crocodylia ) are an order of mostly large , predatory , semiaquatic reptiles . They appeared 83 . 5 million years ago in the Late Cretaceous period ( Campanian stage ) and are the closest living relatives of birds , as the two groups are the only known survivors of the Archosauria . Members of the order ' s total group , the clade ___MASK49___ , appeared about 250 million years ago in the Early Triassic period , and diversified during the Mesozoic era . The order ___MASK3___ includes the true crocodiles ( family Crocodylidae ), the alligators and caimans ( family Alligatoridae ), and the gharial and false gharial ( family ___MASK98___ ). Although the term ' crocodiles ' is sometimes used to refer to all of these , a less ambiguous vernacular term for this group is crocodilians . Binomial nomenclature ( also called binominal nomenclature or binary nomenclature ) is a formal system of naming species of living things by giving each a name composed of two parts , both of which use Latin grammatical forms , although they can be based on words from other languages . Such a name is called a binomial name ( which may be shortened to just " binomial "), a binomen or a scientific name ; more informally it is also called a Latin name . The first part of the name identifies the genus to which the species belongs ; the second part identifies the species within the genus . For example , humans belong to the genus " ___MASK11___ " and within this genus to the species " ___MASK11___ sapiens ". The " formal " introduction of this system of naming species is credited to Carl Linnaeus , effectively beginning with his work " Species Plantarum " in 1753 . But Gaspard Bauhin , in as early as 1623 , had introduced in his book " Pinax theatri botanici " ( English , " Illustrated exposition of plants ") many names of genera that were later adopted by Linnaeus . Hamburg ( local pronunciation ; Low German / Low Saxon : " Hamborg " ), officially " Freie und Hansestadt Hamburg " ( Free and Hanseatic City of Hamburg ), is the second largest city in Germany and the eighth largest city in the European Union . It is the second smallest German state by ___MASK32___ . Its population is over 1 . 7 million people , and the wider Hamburg Metropolitan Region covers more than 5 . 1 million inhabitants . The city is situated on the river Elbe .