FIGURE 3 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
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FIGURE 3. Skeletal and overall anatomy of T. leysae sp. nov. (resin slice preparation of the holotype). A. Cross section through cortex (Co) and choanosome (Ch); radial megasclere bundles (rMSB) fan out slightly in the peripheral cortex region. B. – C. Details of the cortex (B) and choanosome (C). The cortex appears solid with almost no subdermal lacunae; it is densely filled with megasters, in contrast to the very low megaster density of the choanosome. Auxiliary megascleres (aMS) are present in the cortical megasclere bundle fans and separately or grouped in the choanosome. D. – G. Asters in the cortex and the choanoderm; peripheral micrasters (ma) are associated with the exopinacoderm (D); megasters (MA) dominate the cortex; the average distance between megasters is lower than one megaster diameter (D & E, see Fig. 4); A peripheral cortical layer 200 – 400 µm thick is almost completely free of megasters (D), subcortical lacunae are present near the inner cortical boundary, thus appearing partly free of megascleres (E); the choanoderm is largely free of megasters (E–F) or they show up in clouds (G), with a much lower density compared to the cortex.
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- Is cited by
- Taxonomic treatment: 10.5281/zenodo.5696288 (DOI)
- Taxonomic treatment: http://treatment.plazi.org/id/03C95A0AFFCAFFE3FF56AB85FC0AF9F9 (URL)
- Is part of
- Journal article: 10.5281/zenodo.194503 (DOI)
- Journal article: urn:lsid:plazi.org:pub:FFF02272FFCEFFEBFFC1AA0AFFDCFF98 (LSID)
- Journal article: http://publication.plazi.org/id/FFF02272FFCEFFEBFFC1AA0AFFDCFF98 (URL)