Friis, E.M. and Skarby, A. (1981) ‘Structurally preserved angiosperm flowers from the Upper
Cretaceous of southern Sweden’, Nature, 291:485–6.
Friis, E.M., Crane, P.R. and Pedersen, K.R. (1988) ‘The reproductive structures of Cretaceous
Platanaceae’, Biologiske Skrifter, 31:1–55.
—— (1999) ‘Early angiosperm diversification: The diversity of pollen associated with angiosperm
reproductive structures in Early Cretaceous floras from Portugal’, Annals of the Missouri
Botanical Garden, 86:259–96.
Friis, E.M., Pedersen, K.R. and Crane, P.R. (2000) ‘Reproductive structures and organization of
basal angiosperms from the Early Cretaceous (Barremian or Aptian) of western Portugal’,
International Journal of Plant Science, 161: S169–82.
—— (2001) ‘Fossil evidence of water lilies (Nymphaeales) in the Early Cretaceous’, Nature, 410:
357–60.
Goremykin, V.V., Hansman, S. and Martin, W.F. (1997) ‘Evolutionary analysis of 58 proteins
encoded in six completely sequenced chloroplast genomes: revised molecular estimates of two
seed plant divergence times’, Plant Systematics and Evolution, 206:337–51.
Harland, W.B., Armstrong, R.L., Cox, A.V., Craig, L.E., Smith, A.G. and Smith, D.G. (1990) A
Geologic Time Scale 1989, Cambridge: Cambridge University Press.
Harvey, P.H., Nee, S., Mooers, A.O. and Partridge, L. (1991) ‘These hierarchical views of life:
phylogenies and metapopulations’, in R.J.Berry, T.J.Crawford and G.M.Hewitt (eds) Genes in
Ecology: the 33rd Symposium of the British Ecological Society, Oxford: Blackwell, pp. 123–37.
Hasegawa, M., Kishino, H. and Yano, T. (1985) ‘Dating the human-ape splitting by a molecular clock
of mitochondrial DNA’, Journal of Molecular Evolution, 21:160–74.
Herendeen, P.S., Crane, P.R. and Drinnan, A.N. (1995) ‘Fagaceous flowers, fruits, and capsules
from the Campanian (Late Cretaceous) of central Georgia, U.S.A.’, International Journal of
Plant Science, 156:93–116.
Herendeen, P.S., Magallón-Puebla, S., Lupia, R., Crane, P.R. and Kobylinska, J. (1999) ‘A
preliminary conspectus of the Allon Flora from the Late Cretaceous (Late Santonian) of
central Georgia, U.S.A.’, Annals of the Missouri Botanical Garden, 86:407–71.
Hickey, L.J. and Doyle, J.A. (1977) ‘Early Cretaceous fossil evidence for angiosperm evolution’,
The Botanical Review, 43:3–104.
Hillis, D.M., Mable, B.K. and Moritz, C. (1996) ‘Applications of molecular systematics: the state of
the field and a look to the future’, in D.M.Hillis, C.Moritz, and B.K.Mable (eds) Molecular
Systematics, 2nd edn, Sunderland, Massachusetts: Sinauer Associates, pp. 515– 43.
Hughes, N.F. (1976) Palaeobiology of Angiosperm Origins, Cambridge: Cambridge University Press.
Jefferies, R.P.S. (1979) ‘The origin of chordates—a methodological essay’, in M.R.House (ed.) The
Origin of Major Invertebrate Groups, Systematics Association Special Volume 12, pp. 443–7.
Keller, J.A., Herendeen, P.S. and Crane, P.R. (1996) ‘Fossil flowers of the Actinidiaceae from the
Campanian (Late Cretaceous) of Georgia’, American Journal of Botany, 83:528–41.
Lidgard, S. and Crane, P.R. (1988) ‘Quantitative analyses of the early angiosperm radiation’,
Nature, 331:344–6.
Magallón, S. and Sanderson, M.J. (2001) ‘Absolute diversification rates in angiosperm clades’,
Evolution, 55:1762–80.
Magallón, S., Crane, P.R. and Herendeen, P.S. (1999) ‘Phylogenetic pattern, diversity, and
diversification of eudicots’, Annals of the Missouri Botanical Garden, 86:297–372.
Manos, P.S. (1997) ‘Systematics of Nothofagus (Nothofagaceae) based on rDNA spacer sequences
(ITS): taxonomic congruence with morphology and plastid sequences’, American Journal of
Botany, 84:1137–55.
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