Fig. 1

Phylogeny of paracomatulids and comatulids from Late Triassic to early Upper Jurassic. Geological ages and specimens not to scale. Sources of the figured representative specimens: Paracomatula triadica Hagdorn and Campbell (1993, part of fig. 6; the segmented centrodorsal is shadowed); Paracomatula liasica Hess, new SEM photograph; Paracomatula helvetica Hess (Hess and Messing 2011, from Rasmussen 1978; this is a composite picture); Singillatimetra inordinata Hess (2012); Palaeocomaster styriacus Kristan-Tollmann (1988); Palaeocomaster benthuyi n. sp., this paper; Palaeocomaster morierei (Loriol), new SEM photograph, this paper; Palaeocomaster paucicirrus n. sp., this paper; Palaeocomaster schlumbergeri Loriol, this paper; Palaeocomaster messingi Hess (2012); Solanocrinites voultensis Hess (2012); Andymetra galei Hess (2012); Palaeocomaster musculosus Hess 2013b, centrodorsal and cup in lateral view); Solanocrinites gresslyi (Étallon), Hess and Messing (2011); Archaeometra scrobiculata (Münster in Goldfuss), Hess (2013b); Semiometra petitclerci (Caillet), Hess (2013b)