Entity:

Concise hierarchy

Subsequent entries

Ref: S. Koerber, 2012: [29].

Ref: J.R. Nursall, 1996: 125.

†*Pycnodonti* (Order)	Ref: D.S. Jordan, 1923: 114.
†*Pycnodontiformes* (Order) Berg, 1937	Ref: J.S. Nelson, 2006: 98.

†*Pycnodontiformes* (Order) Berg, 1937	Ref: J.S. Nelson, 2006: 98.
†*Pycnodontoidei* (Suborder) Nursall, 1996	Ref: J.R. Nursall, 1996: 125.
†*Pycnodontiformes* (Order) Berg, 1937	Ref: R.L. Carroll, 1988: 603.
†*Pycnodonti* (Order)	Ref: D.S. Jordan, 1923: 114.

2024	Available in Systema Naturae 2000	†15g;1s
1989-present	Systema Naturae 2000: 5 Jan 2014	[; †15g]
2003	W.E. Bemis: 24 Jun 2003	[; †14g]