Fig. 7
From: Ancestral morphology of Ecdysozoa constrained by an early Cambrian stem group ecdysozoan
Optimisation of well-supported ancestral characters on topology, with fossil exemplars. a Anterior terminal mouth of Acosmia maotiania (RCCBYU 10233) in lateral orientation (normal light). b Annulated trunk of Acosmia maotiania (RCCBYU 10235) in lateral orientation (polarized, low angle). c Circumoral structures (scalids) and pharyngeal armature (teeth) of Cricocosmia jinningensis (YKLP 11412) in lateral orientation (polarized, low angle). d Circumoral structures (plates) of Peytoia nathorsti (USNM 57538) in ventral orientation (polarized, low angle). cos circumoral structures; pha pharyngeal armature. Photograph D credited to Allison Daley, all others to Richard Howard. Silhouettes from phylopic.org. Acosmia life reconstruction credited to Franz Anthony