The Vascocertidae, named by Spath (1925) is family of Upper Cretaceous ammonites

Ammonitida

The Ammonitida is an order of more highly evolved ammonoid cephalopods from the Jurassic and Cretaceous time periods, commonly with intricate ammonitic sutures....

 in the Superfamily Acanthocerataceae

Acanthocerataceae

Acanthocerataceae is a superfamily of extinct Upper Creataceous ammonoid cephalopods belonging to the order, Ammonitida, and comprising some 10 or so families.-Analysis:...

 characterized by shells that are either smooth or bluntly tuberculate, or have sparse, coarse ribs. Sutural elements are shallow, irregular, and slightly indented, or deep and very indented. Whorl section and degree of involution vary, even within species.

The Vascoceratidae is a short lived family restricted to the early and middle Turonian

Turonian

The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous epoch, or a stage in the Upper Cretaceous series. It spans the time between 93.5 ± 0.8 Ma and 89.3 ± 1 Ma...

 stage. Its duration, no more than a few million years. They are derived from the Acanthoceratidae

Acanthoceratidae

Acanthoceratidae is an extinct family of cephalopods belonging to the Ammonite subclass. The Type genus is Acanthoceras.-Referenceas:*http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=95294&is_real_user=1...

 and are the predecessors of the Tissotiidae

Tissotiidae

Tissotiidae is a family of ammonites belonging to the Acanthocerataceae. Members of the Tissotiidae tend to have smooth, strongly involute shells with deeply impressed inner rims to the whorls where subsequent whorls wrap around those prior. Shells may be narrow and discoidal, broad and...

, which in turn gave rise to the Coilopoceratidae; all taking place in a short time span in the Turonian.