Cj. Cleal et al., FURTHER OBSERVATIONS ON THE UPPER CARBONIFEROUS PTERIDOSPERM FROND MACRONEUROPTERIS-MACROPHYLLA, Palaeontology, 41, 1998, pp. 383-386
A large specimen of Macroneuropteris macrophylla clearly shows the ove
rtopped branching of the primary rachis branches in the upper part of
the frond. This is the first unequivocal evidence of the distal archit
ecture of this species to be published and confirms the reconstruction
proposed by us in an earlier paper.