PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Warburgella rotundata

Trilobita - Proetida - Proetidae

Taxonomy

Warburgella rotundata was named by Begg (1939). Its type specimen is BG. 9323 and is a 3D body fossil. Its type locality is Ladyburn River, Starfish Bed, Bed No. 2, which is in a Rawtheyan marine limestone in the South Threave Formation of the United Kingdom.

It was recombined as Cyphoproetus rotundata by Owens (1971).

Year	Name and author
1939	Warburgella rotundata Begg pp. 378 - 380 figs. Plate VI, figs. 4, 5, and 6
1971	Cyphoproetus rotundata Owens pp. 142 - 143 figs. Plate 24, Figs. 10-12, 14, 16, 17.
1973	Warburgella rotundata Owens pp. 31 - 32 figs. Pl. 6, figs. 2-4

Reference	Diagnosis
Owens 1971	Very similar to C. facetus, from which it differs in: a more campanulate glabella, with more rounded, prominent basal lobes, separated by a slightly deeper furrow, and a larger number of pygidial axial rings.
R. M. Owens 1973	Glabella bell-shaped, distinctly constricted opposite y; occipital ring without lobes; no preglabellar field; anterior border not widened sagittally; anterior branches of facial sutures nearly parallel; lateral margin not incurved at base of genal spine; thorax of 9 segments.