parent_taxon arganaceras
Elginia was a pareiasaur ; a member of a group of Late Permian parareptiles which may have grown up to . The Permian is a geologic period and system which spans 46 . 7 million years from the end of the Carboniferous Period million years ago ( ___MASK30___ ), to the beginning of the Triassic Period 252 . 2 ___MASK30___ . It is the last period of the Paleozoic Era ; the following Triassic Period belongs to the Mesozoic Era . The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison , who named it after the city of Perm . The Atlantic Ocean is the second largest of the world ' s oceans with a total ___MASK40___ of about . It covers approximately 20 percent of the Earth ' s surface and about 29 percent of its water surface ___MASK40___ . It separates the " Old World " from the " New World ". Morocco (', lit . " The West "; '), officially known as the Kingdom of Morocco (', lit . " The Western Kingdom "; '), is a sovereign country located in the Maghreb region of North Africa . Geographically , Morocco is characterized by a rugged mountainous interior , large tracts of desert , and a lengthy coastline along the Atlantic Ocean and Mediterranean Sea . An ___MASK52___ is an amniote whose skull does not have openings near the temples . Traditionally , the Anapsida are the most primitive subclass of reptiles , the ancestral stock from which Synapsida and Diapsida evolved , making anapsids paraphyletic . It is however doubtful that all anapsids lack temporal fenestra as a primitive trait , and that all the groups traditionally seen as anapsids truly lacked fenestra . The Maghreb ( or ; literally " sunset "; ', " the Arab West " previously known as Barbary Coast , derived from Berber ), or the Greater Maghreb (" al - Maghrib al - Kabr "), is usually defined as much or most of the region of western North Africa or Northwest Africa , west of Egypt . The traditional definition as the region including the Atlas Mountains and the coastal plains of Morocco , Algeria , Tunisia , and Libya , was later superseded , especially following the 1989 formation of the Arab Maghreb Union (    ), by the inclusion of Mauritania and of the disputed territory of Western Sahara ( mostly controlled by Morocco ). During the Al - Andalus era in Spain ( 711  1492 ), the Maghreb ' s inhabitants , Maghrebis , were known as " Moors "; the Muslim ___MASK7___ of Spain in those times were usually included in contemporary definitions of the Maghreb  hence the use of " Moorish " or " Moors " to describe the Muslim inhabitants of Spain in Western sources . Pareiasaurs ( meaning " cheek lizards ") are an extinct group of ___MASK52___ reptiles classified in the family ___MASK12___ . They were large herbivores that flourished during the Permian period . Arganaceras ( `` Argana horn '' ) is an medium size pareiasaur from the Late Permian of Morocco . It was about 2 m in length and had a horn - like structure on its snout . It was closely related to the European genus Elginia .