Table 2. Estimated deviations from the median plane of previously described plectronoceratids and “protactinoceratids”.

Genus	x-translation	y-rotation	z-rotation
Eodiaphragmoceras	0	0	0–1
Benxioceras	0–1	0	1
Mastoceras	0–1	1	0–1
Paraplectronoceras	0–1	1	0–1
Theskeloceras	0–1	1	0–1
Parapalaeoceras	1	0	0–1
Physalactinoceras	1	0–1	0–1
Multicameroceras	1	1	0–1
Sinoeremoceras	1	1	0–1
Wanwanoceras	1	1	0–1
Protactinoceras	1	1	2
Lunanoceras	1–2	0	0–1
Jiagouceras	1–2	0	1–2
Rectseptoceras	1–2	1	2

Note:

Plectronoceras, Balkoceras and Palaeoceras are not included because they were not based on longitudinal sections. Codings: 0, no deviation; 1, small to moderate deviation; 2, strong deviation.