Fig. 1
From: Hox gene expression during development of the phoronid Phoronopsis harmeri
Phoronopsis harmeri: morphology of the anterior part of living animal (a) and scheme of its life cycle (b). Hox clusters organization and Hox genes complement in various Spiralia (c), based on [16, 89, 107]. Metasomal sac and adult trunk originating from it are marked in red in b. Gene antp from Phoronis australis (marked with asterisk) was originally described as lox2 (see text for discussion). For Phoronopsis harmeri and Novocrania anomala only the Hox complement is available (data on cluster organization are missing). The vertical bars in C indicate boundaries of the particular scaffolds of the split Hox clusters. Abbreviations: dt digestive tract, lp lophophore, ms metasomal sac, te larval tentacles, tr adult trunk