1838), Lesquereux (1870), Kidston (1885) and Hoffman and Ryba (1899) have confused Bothrodendron with Ulodendron, because the specimen of Bothrodendron punctatum first figured by Lindley and Hutton (1833) has the large oval scars generally known as "ulodendroid" scars.
Nevertheless the distinction between Bothrodendron and Ulodendron is quite clear, especially since Zeiller (1886a, pl.
There is also a possible record from the Donets Basin in Ukraine--the type of Ulodendron schlegelii.
On the nature of the stems of Ulodendron, Bothrodendron and Megaphyton.
The Carboniferous "genera" Ulodendron and Halonia an assessment.
The Carboniferous fossil lycopod Ulodendron landsburgii (Kidston) comb.