One of these requirements are wrong for scribing Expert Cure Poison and Expert Primal Cure Poison. As such, a Biped can only scibe the Biped form. A Dragon, however, can scribe both Biped and Dragon version. Due to the requirement of Biped form only needing spellcraft, and Dragon form needing spellcraft + Adult / Hatchling or Ancient to scribe.
Those should only be requirements to use the "crafted" spell, not for scribing and crafting it. Both require spellcrafting, and both should be scribable and craftable by either race