"Krassiloviella limbelloides is the second bryophyte described as a result of ongoing studies of
the Early Cretaceous Apple Bay
flora of Vancouver Island.
Krassiloviella
is also the second genus of family
Tricostaceae, which provides the oldest unequivocal evidence for the pleurocarpous superorder Hypnanae
and a hard minimum age for the group. Revealing aspects of diversity unaccounted for in extant
floras, such
fossil bryophyte discoveries emphasize the importance of paleontology for efforts aimed at documenting the
history of biodiversity
The reference is:
Glenn W. K. Shelton, Ruth A. Stockey,
Gar W. Rothwell, and Alexandru M. F. Tomescu.
Krassiloviella limbelloides gen. et sp. nov.: Additional Diversity in the Hypnanaean Moss Family Tricostaceae (Valanginian, Vancouver Island, British Columbia).
177(9): 792-808. 2016.
DOI: 10.1086/688707
Available from: https://www.researchgate.net/publication/309090129_Krassiloviella_limbelloides_gen_et_sp_nov_Additional_Diversity_in_the_Hypnanaean_Moss_Family_Tricostaceae_Valanginian_Vancouver_Island_British_Columbia [accessed Nov 10, 2016].
Leaves are tricostate, with a unistratose lamina through
most of the leaf length (e.g.,
fi
g. 6). Laminae are delicate, as
evidenced by their typically incomplete preservation (e.g.,
fi
gs. 4
E
,6,7
C
). Where unistratose, the lamina is 11.5
–
14
m
m
thick. However, the lamina is bistratose or tristratose in areas
where costae converge at the leaf apex (
fi
g. 7
A
,7
C
). The three
costae arise separately (
fi
g. 7
H
,7
I
).
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