Measurements for all the material with gigantopterid affinity from the early Permian Jambi flora as housed in the paleobotanical collections of the Naturalis Biodiversity Center, Leiden, The Netherlands and in the paleobotanical collections of the department Earth Sciences Marine palynology & palaeoceanography of the University of Utrecht

* All size should be multiplied by 2.5 to arrive at values in um (micrometer)
* First column 'Specimen_number' indicates either the range of slides (transverse, radial & tangential) in those coming from the Utrecht collection, or the collection number for the specimen in the case of specimens from the Leiden collection
*Explanation of the column header names are as followes:
	-Tracheid_shape = Shape of the tracheid cells in transverse view
	-Tracheid_size_trans = Size of the tracheid cells in transverse view, measured in radial direction
	-#Tracheid_cells_between_rays = Number of tracheid cells between rays in transverse view, measured perpendicular to the rays
	-Ray_height_#_of_cells = Height of the rays in number of cells (tangential view)
	-Ray_width_range = Range of width of the rays, in number of cells (tangential view)
	-Ray_width_#_of_cells = Ray width in number of cells (tangential view)
	-Ray_cell_width_radial = Width of the individual ray cells (radial view)
	-Ray_cell_height_radial = Width of the individual ray cells (radial view)
	-Tracheid_pits_type = The morphological type of the tracheid pits
	-#_of_tracheid_pit.rows_range = Range of the number of tracheid pit rows on a tracheid wall (radial view)
	-#_of_tracheid_pit.rows = Number of tracheid pit rows on a tracheid wall (radial view)
	-tracheid_pit_organisation = Organisation of the tracheid pits on a tracheid wall (radial view)
	-tracheid_pit_shape = Shape of the tracheid pits (radial view)
	-tracheid_pit_shape_category = Discrete category for tracheid pit shape (for use in analysis)
	-tracheid_pit_diameter = Diameter of the tracheid pits (radial view)
	-tracheid_pit_porus_shape = Shape of the porus of the tracheid pits
	-tracheid_pit_porus_shape_category = Discrete category for the shape of the porus of the tracheid pits (for use in analysis)
	-tracheid_pit_porus_length = Length of the porus of the tracheid pits
	-tracheid_pit_porus_width = Width of the porus of the tracheid pits
	-cross-field_pit_type = The morphological type of the cross-field pits
	-cross-field_pit_#_range = Range for the number of cross-field pits in a field
	-#_of_cross-field_pits = Number of cross-field pits in a field
	-cross-field_pit_organisation = Organisation of the cross-field pits in a field
	-cross-field_pit_shape = Shape of the cross-field pits
	-cross-field_pit_diameter = Diameter of the cross-field pits
	-cross-field_pit_porus_shape = Shape of the porus of the cross-field pits
	-cross-field_pit_porusdiameter = Diameter of the porus of the cross-field pits

Note: all data files contain tab separated values (tsv)