‘Articulated’ rhynchonelliformean1 brachiopods are abundant shelly fossils, but the direct fossil record of their soft parts was hitherto confined to a single pyritized trace possibly representing a lophophore2. Anatomical knowledge of extinct rhynchonelliformeans relies heavily on analogies to extant species; these analogies are untested for stem-group clades. The Silurian Herefordshire (UK) Konservat-Lagerstätte3 (about 425 Myr bp) yields exceptionally preserved three-dimensional fossils that provide unrivalled insights into the palaeobiology of a variety of invertebrates4,5,6,7,8,9. The fossils are preserved as calcitic void in-fills in carbonate concretions within a volcaniclastic horizon10, and are reconstructed digitally11. Here we describe a stem-group rhynchonelliformean specimen from this deposit; it most probably belongs in the order Orthida. A robust ridged pedicle with distal rootlets is preserved, together with a lophophore and other soft-tissue structures. The pedicle morphology is novel, urging caution in inferring stem-group rhynchonelliformean anatomy from that of crown-group species. Smaller brachiopods are attached to the specimen; these include a probable atrypide, with pedicle and marginal setae preserved.
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Williams, A., Carlson, S. J. & Brunton, C. H. C. in Treatise on Invertebrate Paleontology Part H, Revised, Vol. 2 (ed. Kaesler, R. L.) 1–28 (Geol. Soc. Am., Boulder, and Univ. Kansas, Lawrence, 2000)
Racheboeuf, P. R. & Copper, P. The mesolophe, a new lophophore type for chonetacean brachiopods. Lethaia 23, 341–346 (1990)
Briggs, D. E. G., Siveter, David J. & Siveter, Derek J. Soft-bodied fossils from a Silurian volcaniclastic deposit. Nature 382, 248–250 (1996)
Sutton, M. D., Briggs, D. E. G., Siveter, David J. & Siveter, Derek J. An exceptionally preserved vermiform mollusc from the Silurian of England. Nature 410, 461–463 (2001)
Sutton, M. D., Briggs, D. E. G., Siveter, David J. & Siveter, Derek J. A three-dimensionally preserved fossil polychaete worm from the Silurian of Herefordshire, England. Proc. R. Soc. Lond. B 268, 2355–2363 (2001)
Sutton, M. D., Briggs, D. E. G., Siveter, David J., Siveter, Derek J. & Orr, P. J. The arthropod Offacolus kingi (Chelicerata) from the Silurian of Herefordshire, England: computer based morphological reconstructions and phylogenetic affinities. Proc. R. Soc. Lond. B 269, 1195–1203 (2002)
Siveter, David J., Sutton, M. D., Briggs, D. E. G. & Siveter, Derek J. An ostracode crustacean with soft parts from the Lower Silurian. Science 302, 1749–1751 (2003)
Briggs, D. E. G., Sutton, M. D., Siveter, David J. & Siveter, Derek J. A new phyllocarid (Crustacea: Malacostraca) from the Silurian Fossil-Lagerstätte of Herefordshire, UK. Proc. R. Soc. Lond. B 271, 131–138 (2004)
Siveter, Derek J., Sutton, M. D., Briggs, D. E. G. & Siveter, David J. A Silurian sea spider. Nature 431, 978–980 (2004)
Orr, P. J., Briggs, D. E. G., Siveter, David J. & Siveter, Derek J. Three-dimensional preservation of a non-biomineralized arthropod in concretions in Silurian volcaniclastic rocks from Herefordshire, England. J. Geol. Soc. Lond. 157, 173–186 (2000)
Sutton, M. D., Briggs, D. E. G., Siveter, David J. & Siveter, Derek J. Methodologies for the visualization and reconstruction of three-dimensional fossils from the Silurian Herefordshire lagerstätte. Paleontol. Electron. 4 http://palaeo-electronica.org/2001_1/s2/issue1_01.htm (2001)
Rudwick, M. J. S. Living and Fossil Brachiopods (Hutchinson, London, 1970)
Bassett, M. G. in Autoecology of Silurian Organisms (eds Bassett, M. G. & Lawson, J. D.) 237–263 (Spec. Pap. Palaeontol. 32, 1984).
Zhang, Z., Han, J., Zhang, X., Liu, J. & Shui, D. Soft-tissue preservation in the Lower Cambrian linguloid brachiopod from South China. Acta Palaeontol. Pol. 49, 259–266 (2004)
Emig, C. C. Functional disposition of the lophophore in living Brachiopoda. Lethaia 25, 291–302 (1992)
Williams, A., Brunton, C. H. C. & MacKinnon, D. I. in Treatise on Invertebrate Paleontology Part H, Revised, Vol. 1 (ed. Kaesler, R. L.) 321–422 (Geol. Soc. Am., Boulder, and Univ. Kansas, Lawrence, 1997)
Walcott, C. D. A fossil Lingula preserving the cast of the peduncle. Proc. US Natl Mus. 11, 480 (1888)
Davidson, T. A monograph of British fossil brachiopods. Palaeontol. Soc. Monogr. 4, 103–109 (1874)
Bartels, C. & Poschmann, M. Linguloid brachiopods with preserved pedicles: Occurrence and taphonomy (Hunsrück Slate, Lower Emsian, Kaub Formation, Rhenish Massif, SW Germany). Metalla 9, 123–130 (2002)
Rowell, A. J. & Caruso, N. E. The evolutionary significance of Nisusia sulcata, an early articulate brachiopod. J. Paleontol. 59, 1227–1242 (1985)
Cohen, B. J., Holmer, L. E. & Lüter, C. The brachiopod fold: a neglected body plan hypothesis. Palaeontology 46, 59–65 (2003)
Bromley, R. G. & Surlyk, F. Borings produced by brachiopod pedicles, fossil and Recent. Lethaia 6, 349–365 (1973)
Richardson, J. R. in Treatise on Invertebrate Paleontology Part H, Revised, Vol. 1 (ed. Kaesler, R. L.) 441–462 (Geol. Soc. Am., Boulder, and Univ. Kansas, Lawrence, 1997)
Williams, A., James, M. A., Emig, C. C., Mackay, S. & Rhodes, M. C. in Treatise on Invertebrate Paleontology Part H, Revised, Vol. 1 (ed. Kaesler, R. L.) 7–188 (Geol. Soc. Am., Boulder, and Univ. Kansas, Lawrence, 1997)
We thank K. Saunders for technical assistance; T. Wright, M. Bassett, L. Holmer and L. Popov for comments; and R. Fenn, T. Hall and J. Sinclair for general assistance. This work was supported by the Leverhulme Trust, NERC and English Nature.
Reprints and permissions information is available at npg.nature.com/reprintsandpermissions. The authors declare no competing financial interests.
Rotating animation of OUM C. 29586 with associated epifauna (OUM C.29589-29593).
Rotating animation of OUM C. 29586 with ventral pedicle, ventral valve and epifauna removed (posterior mass also removed for part of animation)
Extended discussion of the systematic position of Bethia serraticulma.
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Sutton, M., Briggs, D., Siveter, D. et al. Silurian brachiopods with soft-tissue preservation. Nature 436, 1013–1015 (2005). https://doi.org/10.1038/nature03846
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