Egg with rough shell & Acanthor larva with hooks.
08a. Egg shell thick with Rough Cross-section and Net-like Ornamentation on the Surface, Contains an Acanthor Larva.
Spherical to oval egg with fully developed miracidium = ciliated larva.
08b. Spherical to oval egg, thin shell, without surface ornamentation, containing a fully-developed miracidium = ciliated larva.
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