01966nas a2200229   4500008004100000022001400041245019900055210006900254300001200323490000900335520118300344653001601527653002001543653001701563653001401580653001601594653001501610653001901625100001401644700001701658856006101675       2013                        eng d  a1175-533400aDiscovery of Recent thecideide brachiopods (Order: Thecideida, Family: Thecideidae) in Sulawesi, Indonesian Archipelago, with implications for reproduction and shell size in the genus Ospreyella0 aDiscovery of Recent thecideide brachiopods Order Thecideida Fami  a401-4330 v36943 a<p>For the first time thecideide brachiopods have been discovered in the Indonesian Archipelago. All specimens were collected in a water depth of 30 m from an old shipwreck, the &ldquo;Mutiara&rdquo;, which represents a remarkable habitat for these cryptic brachiopods despite its artificial nature. The thecidellinine species Minutella cf. minuta and the lacazelline species Ospreyella mutiara n. sp. are described and illustrated comprehensively, including their shell ontogeny. The inclusion of the new species O. mutiara in the genus Ospreyella L&uuml;ter and W&ouml;rheide, 2003 is based on results of an integrated approach combining morphological, ontogenetic and genetic studies. Relevant morphological characters diagnostic for Ospreyella are established. In addition, all Recent lacazelline brachiopod genera are confirmed as valid taxa using molecular methods. The small body size of O. mutiara and the weakly developed brachidium in comparison to other Ospreyella species as a consequence of heterochrony is discussed in more detail. O. mutiara is the first species of the exclusively gonochoristic genus Ospreyella for which hermaphroditism is now documented.</p>
10aBrachiopoda10ahermaphroditism10aheterochrony10aMinutella10anew species10aOspreyella10ashell ontogeny1 aSimon, E.1 aHoffmann, J.  uhttp://biotaxa.org/Zootaxa/article/view/zootaxa.3694.5.102788nas a2200229   4500008004100000022001400041245010800055210006900163260002900232300001400261490000700275520210700282653001502389653001302404653001702417653001302434653001702447653002002464100001602484700001702500856004102517       2013                        eng d  a1475-498300aThe development and shell microstructure of the pseudodeltidium and interarea in thecideide brachiopods0 adevelopment and shell microstructure of the pseudodeltidium and   bBlackwell Publishing Ltd  a433–4550 v563 a<p>This study examines the development of the delthyrium, pseudodeltidium and interarea, their growth during the early juvenile stages of ontogeny and the extrapolation of morphology from adult shells to the probable juvenile state. Examination of the development and shell microstructure of the cardinalia of early juvenile thecideide brachiopod ventral valves from Jurassic, Cretaceous and Holocene specimens suggests that the delthyrium develops early in ontogeny and that the initial development of the pseudodeltidium precedes that of the interarea. Also, until the interarea is formed, the postero-lateral flanks of the ventral umbo are palintropic. The development of the interarea can be seen to be a consequence of the lateral extension of the early juvenile hinge line. Initially, the pseudodeltidium consists solely of a thin plate of primary shell material. Comparison of the morphology of the pseudodeltidium of early juveniles with that of adults suggests that the initially curved lateral profile of the pseudodeltidium is retained, or even accentuated, in the ontogeny of lacazellines, but in all thecidellinines, with the exception of Pachymoorellina and Minutella, following the appearance of the interarea, the pseudodeltidium becomes flattened and often appears continuous with the interarea. However, we do not support any proposal that suggests that, in thecideides, only those forms in which the delthyrium is closed by a dorsally convex plate should be considered to possess a pseudodeltidium sensu stricto, mainly because of physiological differences and the prospect of possible taxonomic confusion in the future. Instead, we propose the term planodeltidium for a flat pseudodeltidium, typically developed in the thecidellinines, and rugideltidium for a convex pseudodeltidium, typically developed in the lacazellines, but also in Pachymoorellina and Minutella. Despite the presence of a rugideltidium, we believe the affinities of Minutella are more strongly with the thecidellinines and have included it in the new subfamily Minutellinae of the family Thecidellinidae.</p>
10abrachiopod10aHolocene10aLacazellinae10aMesozoic10aMinutellinae10aThecidellininae1 aLOGAN, ALAN1 aBAKER, PETER  uhttp://dx.doi.org/10.1111/pala.12001