Albian Stage
The Albian (113–101 Ma) is the sixth and last age of the Early Cretaceous, occurring after the Aptian, and before the Late Cretaceous (Cenomanian)
What happened during this time?
Early to Mid-Albian (113–101 Ma): Angiosperms occur in higher middle latitudes and locally dominant (diversity equals that of ferns and others)
There are large angiosperm trees on the landscape during the Early Albian
Between 110-100 Ma, angiosperms were replacing conifers, and causing the extinction of several conifer groups (Condamine et al. 2020)
Archaeanthus is an early angiosperm described from the mid-Cretaceous (uppermost Albian to mid-Cenomanian) Dakota Formation of central Kansas, USA.
Archaeanthus linnenbergeri (Dilcher and Crane) is a multifollicular angiosperm fruit.
Perianth parts (Archaepetala beekeri Dilcher and Crane and Archaepetala obscura Dilcher and Crane)
Bud scales (Kalymmanthus walkeri Dilcher and Crane)
Leaves (Liriophyllum kansense Dilcher and Crane) on the basis of association evidence and structural agreement in the presence of distinctive resin bodies (Dilcher and Crane, 1984).
Late Albian (101 Ma): Angiosperms spanning the tropics to the poles
Inhabiting stream-margin and overbank (floodplain)
Nearly all major physiognomic foliage types found
Megaflora from below 60oN consist of broadleaf evergreens, with cold-sensitive life-forms
Arctic megafloras dominated by broadleaved deciduous forests
