منابع مشابه
Molecular paleobiological insights into the origin of the Brachiopoda.
Most studies of brachiopod evolution have been based on their extensive fossil record, but molecular techniques, due to their independence from the rock record, can offer new insights into the evolution of a clade. Previous molecular phylogenetic hypotheses of brachiopod interrelationships place phoronids within the brachiopods as the sister group to the inarticulates, whereas morphological con...
متن کاملBrachiopoda of Greece: an annotated checklist
BACKGROUND Until today, only scattered species records of Brachiopoda from Greece have been included in publications on the Mediterranean brachiopod fauna. These records were mostly based on material collected during marine expeditions in the eastern Mediterranean decades ago, while few recent additional records appear in ecological studies. The aim of this paper was to give the first checklist...
متن کاملLaminar shell structure of Antigonambonites planus (Pander, 1830) (Brachiopoda, Billingsellida)
The order Billingsellida comprises brachiopods with laminar and fibrous shells, however, the data on their microstructure are scanty and the taxonomic value of differences in their shell structure is uncertain. The shell structure of clitambonitidine Antigonambonites planus was found to be laminar, not fibrous as previously considered; possibly this shows that it belongs to the suborder Billing...
متن کاملFunctional disposition of the lophophore in living Brachiopoda
The shape and disposition of adult brachiopod lophophores relate to inand excurrent apertures. to the internal water irrigation system, to shell orientation at substratum and to near-bottom currents. The arrangement of the mantle canals and gonads of different lophophores are induccd by water circulation. The trocholophe (2% of living species) is considered as a plesiomorphic character which re...
متن کاملThe phylogenetic position of entoprocta, ectoprocta, phoronida, and brachiopoda.
Ectoprocts, phoronids and brachiopods are often dealt with under the heading Tentaculata or Lophophorata, sometimes with entoprocts discussed in the same chapter, for example in Ruppert and Barnes (1994). The Lophophorata is purported to be held together by the presence of a "lophophore," a mesosomal tentacle crown with an upstream-collecting ciliary band. However, the mesosomal tentacle crown ...
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ژورنال
عنوان ژورنال: Annals and Magazine of Natural History
سال: 1904
ISSN: 0374-5481
DOI: 10.1080/03745480409443025