Skip to main content
Fig. 2 | BMC Evolutionary Biology

Fig. 2

From: Metamorphic remodeling of morphology and the body cavity in Phoronopsis harmeri (Lophotrochozoa, Phoronida): the evolution of the phoronid body plan and life cycle

Fig. 2

A scheme of consecutive stages of metamorphosis of Phoronopsis harmeri. In all panels, the dorsal side is to the top, the ventral side is to the down. a Competent larva. b Start of eversion of the metasomal sac. c The metasomal sac is completely everted. d Stage of eating of the preoral lobe and the postoral ciliated band. e 4-h-old juvenile with completely formed blood system. Abbreviations: am – ampulla; ao – apical organ; bc – blastocoel; bm – blood mass; c1 – protocoel; c2 – mesocoel; c3 – metacoel; ds – dorsal side of the body; dv – dorsal blood vessel; epi – epistome; es – esophagus; lphv – two lophophoral blood vessels; lrpl – two lateral remnants of preoral oobe; lv – ventrolateral blood vessel; mg – midgut; ms – metasomal sac; mv – median blood vessel; nd – nephridial duct; pb – posterior bulge; sd – stomach diverticulum; st – stomach; t – tentacle; tt – telotroch; vm – ventral mesentery; vs – ventral side of the body; vv – ventral blood vessel

Back to article page