Results 121 to 130 of about 1,298 (173)
Applying Flora Composition and Leaf Physiognomy to Reconstruct the Paleocommunity, Palaeoclimate, and Paleoenvironment of the Jehol Biota in Jilin, China. [PDF]
Plants (Basel)Huang W, Zhang D.
europepmc +1 more source
Detection of traces of calcium oxalate druses in fossil leaves of angiosperms and gymnosperms from different sites and geological periods. [PDF]
PLoS OneMalekhosseini M +4 more
europepmc +1 more source
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2015
Cycads are regarded as the “Living Fossils” and belong to a specialized group of plants having ancient lineage possessing great significance from the evolutionary point of view. During excavations, the cycad fossils located and accepted as related to the similar lineage as the present-day cycads have been known from the early Permian period, ca.
Anil K. Goel, J. S. Khuraijam
exaly +2 more sources
Cycads are regarded as the “Living Fossils” and belong to a specialized group of plants having ancient lineage possessing great significance from the evolutionary point of view. During excavations, the cycad fossils located and accepted as related to the similar lineage as the present-day cycads have been known from the early Permian period, ca.
Anil K. Goel, J. S. Khuraijam
exaly +2 more sources
2022
The cycads are a group of relict Mesozoic plants of which 10 genera now exist in the mainly tropical to warm temperate regions of the world. An additional toxicity which affects cattle after weeks of consumption of cycad leaves is a posterior ataxia known locally as “zamia staggers”. A toxin responsible for this condition has not so far been discovered.
Seawright, Alan A. +3 more
openaire +2 more sources
The cycads are a group of relict Mesozoic plants of which 10 genera now exist in the mainly tropical to warm temperate regions of the world. An additional toxicity which affects cattle after weeks of consumption of cycad leaves is a posterior ataxia known locally as “zamia staggers”. A toxin responsible for this condition has not so far been discovered.
Seawright, Alan A. +3 more
openaire +2 more sources
Science, 1968
Recurrent somatic reduction is a normal ontogenetic process in apogeotropic roots of cycads, which develop into dichotomously branching coralloid masses. The reduced cells make up part of a ring of differentiated cortical tissue lying midway between the pericycle and the epidermis; they serve as fillers among the large cells and become charged with ...
openaire +2 more sources
Recurrent somatic reduction is a normal ontogenetic process in apogeotropic roots of cycads, which develop into dichotomously branching coralloid masses. The reduced cells make up part of a ring of differentiated cortical tissue lying midway between the pericycle and the epidermis; they serve as fillers among the large cells and become charged with ...
openaire +2 more sources