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First record of Megaramphoprion (Annelida; Polychaeta) in Laurentia

Published online by Cambridge University Press:  14 July 2015

Mats E. Eriksson  and
Benjamin F. Dattilo
Mats E. Eriksson
Affiliation:
Department of Geology, University of Lund, Sölvegatan 12, SE-223 62 Lund, Sweden,
Benjamin F. Dattilo
Affiliation:
Department of Geosciences, Indiana University, Purdue University Fort Wayne, 2101 Coleseum Blvd., Fort Wayne, IN 46805-1499, USA,
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Extract

The Huntington cluster (USNM 536849; Fig. 1) measures 4.1 mm in total length and is comprised of five elements of the maxillary apparatus; the first and second pair of maxillae (right and left MI and MII) and the basal plate (Bp) fitted into the bight of the right MI (for descriptive terminology for ramphoprionids, see Kielan-Jaworowska, 1966; Eriksson, 2001; Fig. 2). Both the MI are broken and lack approximately a third of the anterior end. The right MI also lacks part of its posterior denticulated ridge; the posteriormost tip (p in Fig. 1.2) is, however, still preserved and partly embedded in the slab. Most of the right MII is missing and only a thin rim is exposed, showing the outline of the element. The left MII is almost complete, lacking only a fifth of the anterodorsal end. The basal plate is well preserved and can be seen in full detail, except for a part of the antero-dextral flange, which is broken off (Fig. 1.3). Adjacent to the maxillary apparatus are other fragments that might be the carriers (Fig. 1.4), i.e., the posteriormost, supporting elements of the apparatus. Except for these possible carriers, all elements are more or less in natural position.

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 82 , Issue 6 , November 2008 , pp. 1218 - 1219
Copyright
Copyright © The Paleontological Society

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References

Ault, C. H. 1992. Exposures of Silurian Reefs in Indiana. Indiana Geological Survey Occasional Paper, 61:1–29.Google Scholar
Bergman, C. F., Eriksson, M. E., and Calner, M. 2003. The jawed annelid Rhytiprion magnus Kielan-Jaworowska, 1966—a muddy bottom dweller. GFF, 125:191–199.CrossRefGoogle Scholar
Droste, J. B. and Shaver, R. H. 1982. The Salina Group (Middle and Upper Silurian) of Indiana. Indiana Geological Survey Special Report, 24:1–41.Google Scholar
Erdtmann, B.-D. and Prezbindowski, D. R. 1974. Niagaran (Middle Silurian) interreef fossil burial environments in Indiana. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, 144:342–372.Google Scholar
Eriksson, M. 2001. Silurian ramphoprionid polychaetes from Gotland, Sweden. Journal of Paleontology, 75:993–1015.CrossRefGoogle Scholar
Eriksson, M. 2002. The palaeobiogeography of Silurian ramphoprionid polychaete annelids. Palaeontology, 45:985–996.CrossRefGoogle Scholar
Eriksson, M. E., Jeppsson, L., and Bergman, C. F. 2004. Silurian scolecodonts. Review of Palaeobotany and Palynology, 131:269–300.CrossRefGoogle Scholar
Hints, O., Bergman, C. F., and Märss, T. 2000. Silurian jawed polychaetes from Cornwallis and Ballie-Hamilton islands, Canadian Arctic. Pan-Arctic Palaeozoic tectonics, evolution of basins and faunas. Syktyvkar, Russia, July 2000. Ichtyolith Issues Special Publication, 6:35–38.Google Scholar
Jeppsson, L., Eriksson, M. E., and Calner, M. 2006. A latest Llandovery to latest Ludlow high-resolution biostratigraphy based on the Silurian of Gotland—a summary. GFF, 128:109–114.CrossRefGoogle Scholar
Kielan-Jaworowska, Z. 1962. New Ordovician genera of polychaete jaw apparatuses. Acta Palaeontologica Polonica, 7:291–325.Google Scholar
Kielan-Jaworowska, Z. 1966. Polychaete jaw apparatuses from the Ordovician and Silurian of Poland and a comparison with modern forms. Palaeontologia Polonica, 16:1–152.Google Scholar
Lane, N. G. and Ausich, W. I. 1995. Interreef crinoid fauna from the Mississinewa Shale Member of the Wabash Formation (northern Indiana; Silurian; echinodermata). Journal of Paleontology, 69:1090–1106.CrossRefGoogle Scholar
Rexroad, C. B., Noland, A. V., and Pollock, C. A. 1978. Conodonts from the Louisville Limestone and the Wabash Formation (Silurian) in Clark County, Indiana, and Jefferson County, Kentucky. Indiana Geological Survey Special Report 16, 15 p.Google Scholar
Shaver, R. H., Doheny, E. J., Droste, J. B., Lazor, J. D., Orr, R. W., Pollock, C. A., and Rexroad, C. B. 1971. Silurian and Middle Devonian stratigraphy of the Michigan Basin: a view from the southwest flank, p. 37–59. In Forsyth, J. L. (ed.), Geology of the Lake Erie Islands and Adjacent Shores. Michigan Basin Geological Society Guidebook.Google Scholar
Shaver, R. H., Ault, C. H., Ausich, W. I., Droste, J. B., Horowitz, A. S., James, W. C., Okla, S. M., Rexroad, C. B., Suchomel, D. M., and Welch, J. R. 1978. The Search for a Silurian Reef Model Great Lakes Area. Indiana Geological Survey Special Report 15, 1–36.Google Scholar
Stauffer, C. R. 1933. Middle Ordovician Polychaeta from Minnesota. Bulletin of the Geological Society of America, 44:1173–1218.CrossRefGoogle Scholar