See text Leymeriellidae is an extinct family of Lower Cretaceous ammonites comprising rather small forms distinguished from Hoplitidae by their flattened and grooved ribs and virtual absence of umbilical tubercles.

The family is derived from the Desmoceratidae.

[1] Leymeriellidae are currently regarded is belonging to the Acanthoceratoidea according to W. J. Kennedy et al (1980).

The previous placement was in the Hoplitoidea according to W.J.

Arkell et al (1957) in the Treatise on Invertebrate Paleontology, Part L.[2] Leymeriellidae includes the following genera: