Work in any order. Save the file. It will outlive your phone.
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Location
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Tap your region to show only taxa recorded there. Tap again to remove.
Measurements
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Enter what you measure. Taxon matches if its range overlaps yours. Leave either end blank for open range.
Morphology
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Tap the state you observe. ⏎ Defer if you can't tell yet. ❓ Uncertain marks it considered but ambiguous.
Deferred (set aside)
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Characters you deferred — not currently filtering, but marked to revisit. Click to activate now.
Start anywhere. Tap Where are you? to filter by region, or open any panel to add characters.
If you can't measure a character, click ⏎ Defer to set it aside. If you're unsure of a discrete character's state, use ❓ Uncertain — it won't eliminate any taxa, but marks it as considered.
Deferred characters appear in the gold panel. You can activate them later when you have the measurement.