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Size
Select Size
1. Very Small (< 20 µm)
2. Small (20-30 µm)
3. Medium (30-50 µm)
4. Large (50-100 µm)
5. Very large (>100µm)
Shape
Select Shape
1. Round or irregularly round
2. Oval, flattened
3. Oval, elongated
4. Long
5. Triangular
6. Semi-circular or boat-shaped
7. Multi-sided or irregular
Aperture Number
Select Aperture Number
1. 0 or indefinite
2. 1-2
3. 3
4. 4-6
5. 7-12
6. > 12
Aperture Type
Select Aperture Type
1. Pores only
2. Furrows only
3. Furrows with pores
4. United or irregular furrows may occur
Surface
Select Surface
1. Smooth or indefinite
2. Granular
3. Striate
4. Net or pitted
5. Isolated dots due to spines or other projections
Exine
Select Exine
1. Thin
2. Medium, no rods
3. Medium with spaced rods or beaded
4. Medium or thick with coarse external rods
5. Layer of close, thin rods
6. Long, thin spines
7. Large, broad-based spines
8. Small or very small spines or warts
9. Other projections
Features
Select Features
1. Grains compound or with air sacs
2. Thickened or projecting edges to apertures
3. Cap or streak on apertures
4. Granules or projections scattered on apertures
5. Intine swollen beneath apertures
6. Intine thick or very thick
7. Cell contents granular
Colour
Select Colour
1. White to grey
2. Brown
3. Red or pink
4. Orange
5. Yellow
6. Green
7. Blue to black
Include species with undefined values
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