Arch of Janus.

Quadrifrons is a Latin word, meaning four fronted or four faced, particularly: Arch of Janus, San Giorgio al Velabro behind. ... Latin was the language originally spoken in the region around Rome called Latium. ...

• Form of triumphal arch (eg at Glanum, Arch of Janus, Rutupiae) with four arches (one pair opposite each other, and the second pair opposite each other at right angles) and hence with barrel vaulted passageway in the form of a cross
• Aspect of Janus, god

It is also sometimes used in scientific classification, for example, Eremias. Arc de Triomphe, Paris The Gateway of India, Mumbai, India A triumphal arch is a structure in the shape of a monumental archway, usually built to celebrate a victory in war. ... Part of the Peutinger Table showing the location of Glanum Glanum was a Roman city in Provence, southern France, on the flanks of the Alpilles range of mountains in todays Bouches-du-Rhone départment. ... Arch of Janus, San Giorgio al Velabro behind. ... Map sources for Rutupiae at grid reference TR3361 Ruins Richborough Castle Rutupiae was the Roman name for Richborough near Sandwich, Kent, which they founded. ... Barrel vault In architecture, a barrel vault is an extrusion of a single curve (or pair of curves, in the case of a pointed barrel vault) along a given distance. ... Janus may refer to Janus, the two-faced Thessalian god of gates, doors, doorways, beginnings, and endings that was worshipped by Romans Janus, a two-seater glider. ... Classification Genus Eremias Eremias acutirostris Eremias afghanistanica Eremias andersoni Eremias argus Eremias arguta Eremias aria Eremias brenchleyi Eremias buechneri Eremias fasciata Eremias grammica Eremias intermedia Eremias lalezharica Eremias lineolata Eremias montanus Eremias multiocellata Eremias nigrocellata Eremias nigrolateralis Eremias nikolskii Eremias persica Eremias pleskei Eremias przewalskii Eremias quadrifrons Eremias regeli Eremias...