Dendrogramma, New Genus, with Two New Non- Bilaterian Species from the Marine Bathyal of Southeastern Australia (Animalia, Metazoa incertae sedis) – with Similarities to Some Medusoids from the Author Just, Jean Author Kristensen, Reinhardt Møbjerg Author Olesen, Jørgen text PLoSONE 2014 9 1 11 journal article 10.1371/journal.pone.0102976 Dendrogrammatidae , new family urn:lsid:zoobank.org:act:73DFB28C-EF41-48F7-B324- 09503D79B382. Figure 3. Dendrogramma enigmatica sp. nov., holotype. A, B, lateral views; C, aboral view, D, adoral view. Photographs taken after shrinkage. doi:10.1371/journal.pone.0102976.g003 Diagnosis. Multicellular, mesogleal, apparently diploblastic animal. Body divided into cylindrical stalk and broad, flat disc ( Figs 2 A , B , 3, 4, 5 A , 7). Simple round mouth opening situated in slightly depressed lobed field on rounded apex of stalk. With gastrovascular system comprising a simple tube centrally in stalk (pharynx) running from mouth to base of disc, then branching dichotomously, including first branching node ( Fig. 6 B ), in disc at right angles to stalk. Epidermis composed of single layer of low, uniform cells; gastrodermis composed of single layer of elongate, vacuolated cells tapering towards narrow gastrovascular canal (pharynx) ( Fig. 2 C ); epidermis of mouth-field lobes with thickened, elongate, apparently vacuolated/glandular cells ( Fig. 2 D ). Dense mesoglea milky translucent when formalin fixed except for refractive sheath of spongiose mesoglea surrounding gastrodermis of gastrovascular canal in stalk (pharynx) ( Figs 2 C , 5 C ). Mesoglea criss-crossed by fibrils including cylindrical sheet under epidermis ( Fig. 2 C , D ). Component genus. Dendrogramma , new genus .