Context: The Cretaceous is a geologic period and system that spans 79 million years from the end of the Jurassic Period million years ago (Mya) to the beginning of the Paleogene Period Mya. It is the last period of the Mesozoic Era. The Cretaceous Period is usually abbreviated K, for its German translation "Kreide" (chalk)., Hypselosaurus ( meaning ' highest lizard ' , from Greek  meaning ' high ' or ' lofty ' and  meaning ' lizard ' ) was a 27 - foot ( 8.2 m ) long titanosaurid sauropod that lived in Europe during the Late Cretaceous Period ( Maastrichtian stage , around 70 to 66 million years ago ) . Hypselosaurus was scientifically described by geologist Pierre Émile Philippe Matheron in 1846 and formally named in 1869 , on the basis of fragmentary remains from the Late Cretaceous of the Provence region of France . Matheron thought the animal was a gigantic crocodile . The legs of Hypselosaurus were proportionally robust . Eggs attributed to it by Matheron and Paul Gervais have been found in France since 1846 , and were the earliest dinosaur eggs actually discovered , although they were not recognized as being dinosaurian for several decades . The eggs are unusually large ; measuring at around 1 - foot ( 0.30 m ) in length . Age determination studies performed on the fossilized remains have been inconclusive , with results ranging from a few decades to several hundred years . Eggs with abnormally thin shells have been attributed to Hypselosaurus priscus . Some experts have speculated that this was the cause of the species ' extinction , with vegetation changes , climatic change and overcrowding being the original impetus for the shell thinning . However , there are alternative explanations for the thin eggshell not dependent on pathology . Later researchers found evidence that the eggs in question successfully hatched . Some researchers postulated that the thinner `` Hypselosaurus priscus '' eggshells came from different taxa than the thicker eggshells , and subsequent researchers have come to support this idea . Another potential explanation for variation in eggshell thickness is that the thinner eggs were laid by younger individuals than the thicker shell eggs laid by older individuals or that it was a consequence of natural variations of eggshell thickness within a single species ., France, officially the French Republic, is a country with territory in western Europe and several overseas regions and territories. The European, or metropolitan, area of France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. Overseas France include French Guiana on the South American continent and several island territories in the Atlantic, Pacific and Indian oceans. France spans and had a total population of almost 67 million people as of January 2017. It is a unitary semi-presidential republic with the capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse and Bordeaux., The Paleogene (or ; also spelled Palaeogene or Palæogene; informally Lower Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago (Mya) to the beginning of the Neogene Period Mya. It is the beginning of the Cenozoic Era of the present Phanerozoic Eon. The Paleogene is most notable for being the time during which mammals diversified from relatively small, simple forms into a large group of diverse animals in the wake of the CretaceousPaleogene extinction event that ended the preceding Cretaceous Period. , 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 (Mya) to the beginning of the Cretaceous Period Mya. 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 TriassicJurassic 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., The North Sea is a marginal sea of the Atlantic Ocean located between Great Britain, Scandinavia, Germany, the Netherlands, Belgium, and France. An epeiric (or "shelf") sea on the European continental shelf, it connects to the ocean through the English Channel in the south and the Norwegian Sea in the north. It is more than long and wide, with an area of around ., The Atlantic Ocean is the second largest of the world's oceans with a total area of about . It covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World"., French Guiana (pronounced or ), officially called Guiana, is an overseas department and region of France, located on the north Atlantic coast of South America in the Guyanas. It borders Brazil to the east and south, and Suriname to the west. Its area has a very low population density of only 3 inhabitants per km, with half of its 244,118 inhabitants in 2013 living in the metropolitan area of Cayenne, its capital. By land area, it is the second largest region of France and the largest outermost region within the European Union., Nice (; Niçard , classical norm, or "", nonstandard,  ) is the fifth most populous city in France and the capital of the Alpes-Maritimes "département". The urban area of Nice extends beyond the administrative city limits, with a population of about 1 million on an area of . Located in the French Riviera, on the south east coast of France on the Mediterranean Sea, at the foot of the Alps, Nice is the second-largest French city on the Mediterranean coast and the second-largest city in the Provence-Alpes-Côte d'Azur region after Marseille. Nice is about 13 kilometres (8 miles) from the principality of Monaco, and its airport is a gateway to the principality as well., Paris (French: ) is the capital and most populous city of France. It has an area of and a population in 2013 of 2,229,621 within its administrative limits. The city is both a commune and department, and forms the centre and headquarters of the Île-de-France, or Paris Region, which has an area of and a population in 2014 of 12,005,077, comprising 18.2 percent of the population of France., Paul Gervais full name François Louis Paul Gervaise (26 September 1816  10 February 1879) was a French palaeontologist and entomologist. Gervais' beaked whale ("Mesoplodon europaeus") is named after him., The Maastrichtian is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous epoch or Upper Cretaceous series, the Cretaceous period or system, and of the Mesozoic era or erathem. It spanned the interval from . The Maastrichtian was preceded by the Campanian and succeeded by the Danian (part of the Paleogene and Paleocene)., Titanosaurs (members of the group Titanosauria) were a diverse group of sauropod dinosaurs, which included "Saltasaurus" and "Isisaurus". When the extinction event at the end of the Cretaceous period occurred, they were the last surviving group of long-necked dinosaurs. The group includes some of the heaviest creatures ever to walk the earth, such as "Argentinosaurus" and "Puertasaurus", which are estimated to have weighed up to . The group's name refers to the much earlier discovery "Titanosaurus", a now dubious genus named for the mythological Titans of Ancient Greece. Together with the brachiosaurids and relatives, titanosaurs make up the larger clade Titanosauriformes., Toulouse is the capital city of the southwestern French department of Haute-Garonne, as well as of the Occitanie region. The city lies on the banks of the River Garonne, from the Mediterranean Sea, from the Atlantic Ocean, and from Paris. It is the fourth-largest city in France with 466,297 inhabitants in January 2014. 
The Toulouse Metro area is, with 1 312 304 inhabitants as of 2014, France's 4th metropolitan area after Paris, Lyon and Marseille and ahead of Lille and Bordeaux., Lyon or (more archaically) Lyons (or  ) is a city in east-central France, in the Auvergne-Rhône-Alpes region, about from Paris and from Marseille. Inhabitants of the city are called "Lyonnais"., Gervais' beaked whale ("Mesoplodon europaeus"), sometimes known as the Antillian beaked whale, Gulf Stream beaked whale, or European beaked whale (from which its scientific name is derived) is the most frequently stranding type of mesoplodont whale off the coast of North America. It has also stranded off South America and Africa., Subject: hypselosaurus, Relation: parent_taxon, Options: (A) area (B) mesoplodont whale (C) mya (D) paris (E) titanosauria
Output: titanosauria