Anterior

muscle scar third thoracic leg mandible antennule

carapace mandible beside mouth furca claw second thoracic leg carapace mandible beside mouth

maxilla first thoracic leg ventral furca claw dorsal muscle scars

Posterior

Dorsal hinge second thoracic leg marginal zone (fused part of inner lamella)

selvage free part of inner lamella

Anterior dorsal muscle scars

Posterior

Inner Margin

line of concrescence outer margin inner margin marginal-pore central normal canals muscle scar pores marginal-pore central normal canals muscle scar pores line of concrescence outer margin inner margin

length

Ventral

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