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Homeomorphy in Lunostoma, a new Middle Devonian cryptostome bryozoan |
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| Authors: | Andrej Ernst Paul D. Taylor Jan Bohaty Patrick N. Wyse Jackson |
| Affiliation: | 1. Christian-Albrechts-Universit?t zu Kiel, Institut f??r Geowissenschaften, Ludewig-Meyn-Str. 10, 24118, Kiel, Germany 2. Department of Palaeontology, Natural History Museum, Cromwell Road, London, SW7 5BD, UK 3. Universit?t zu K?ln, Institut f??r Geologie und Mineralogie, Z??lpicher Str. 49a, 50674, K?ln, Germany 4. Department of Geology, Trinity College, Dublin 2, Ireland |
| Abstract: | A new genus and species of rhabdomesine cryptostome bryozoan, Lunostoma pulchra n. gen. n. sp., is described from the Lower Givetian (Middle Devonian) of the Eifel, Germany. It differs from all previously known rhabdomesines in having crescent-shaped structures (??scuta??) on the proximal sides of the apertures. These scuta resemble the lunaria that characterise cystoporate bryozoans, providing yet another example of homeomorphy in the Bryozoa. The function of scuta is unclear as, in contrast to lunaria, they do not project sufficiently from the apertures to constrain the everting lophophores. |
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