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The jugal bone is located on either side of the skull in the circumorbital region. It is the origin of several masticatory muscles in the skull. [1] The jugal and lacrimal bones are the only two remaining from the ancestral circumorbital series: the prefrontal, postfrontal, postorbital, jugal, and lacrimal bones. [2]
Map of Asia. The politics of Asia are extremely varied as would be expected of such a large landmass and a diverse population. Constitutional monarchies, absolute monarchies, one-party states, federal states, dependent territories, liberal democracies and military dictatorships are all factors in the region, as well as various forms of independence movements.
English: Map of the most populous part of Asia showing a combination of physical, political and population characteristics, in Pseudo-Mercator projection, with legend, as per 2018. Compiled using QGIS and CC-0 Natural Earth geodata.
The map of earlier Southeast Asia which evolved from the prehistoric networks of small settlements and reveals itself in historical records was a patchwork of often overlapping mandalas. [3] It is employed to denote traditional Southeast Asian political formations, such as federation of kingdoms or vassalized polity under a center of domination.
These extended margins of thinned bone are called supratemporal fossae. Synapsids, including mammals, have one temporal fenestra, which is ventrally bordered by a zygomatic arch composed of the jugal and squamosal bones. This single temporal fenestra is homologous to the infratemporal fenestra, as displayed most clearly by early synapsids. [2]
A Historical Atlas of South Asia is a historical chronology of the region of South Asia from prehistoric times through the present. It was edited and largely authored by Joseph E. Schwartzberg , professor emeritus of South Asian Studies at the University of Minnesota .
The epijugal is a dermal ossification unique to ceratopsians. It caps the bottom end of the downward-facing, triangular flange of the jugal that is typical for the group. In Arrhinoceratops and Pentaceratops, the epijugal forms a distinct jugal horn. The bone can be found in Yamaceratops and all ceratopsians more derived than the latter.
depressifrons can be distinguished from all other species of Asiatosuchus by a combination of several characteristics including a large hole and a depressed area on the jugal bone of the skull, a frontal bone that does not touch the supratemporal fenestrae (two holes at the top of the skull behind the eye sockets), and a postorbital bone behind ...