The Aalenian takes its name from the town of Aalen, some 70 km east of Stuttgart in Germany. The town lies at the northeastern end of the Swabian Jura. The name Aalenian was introduced in scientific literature by Swiss geologist Karl Mayer-Eymar in 1864.
The base of the Aalenian is defined as the place in the stratigraphic column where the ammonitegenusLeioceras first appears. The global reference profile (GSSP) is located 500 meters north of the village of Fuentelsaz in the Spanishprovince of Guadalajara.[2] The top of the Aalenian (the base of the Bajocian) is at the first appearance of ammonite genus Hyperlioceras.
A large basal carnosaur. The unique combination of characteristics seen in Asfaltovenator may indicate megalosauroids and allosauroids shared a common ancestor not shared with Coelurosauria.