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A new South American Miocene species of 'one-holed' sand dollar (Echinoidea: Clypeasteroida: Monophorasteridae)

RICH MOOI, SERGIO A. MARTÍNEZ, CLAUDIA J. DEL RÍO

Abstract


A new species of monophorasterid sand dollar, Monophoraster telfordi n. sp., is described from the Early Miocene basal horizons of the Chenque Formation of Patagonia, Santa Cruz Province, in southern Argentina. The new taxon raises the number of known species in the family to six, and represents first unequivocal record of the genus for the Early Miocene of South America. It is therefore also the oldest member of the genus. M. telfordi is characterized by its test width to length ratio, which is much higher than for the other two described species in the genus, but less than that known for the extremely wide members of the sister taxon, Amplaster. M. telfordi is also unusual among monophorasterids in lacking broad continuity between basicoronal and post-basicoronal plates in the oral interambulacra. A key is provided to all the known species of Monophorasteridae.

 


Keywords


Echinodermata, Clypeasteroida, Monophorasteridae, sand dollars, new taxon, Argentina, Patagonia, early Miocene

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References


Agassiz, A. (1872–1874) Revision of the Echini. Illustrated Catalogue of the Museum of Comparative Zoölogy at Harvard College, 7, pt. 1–2, i–xii, 1–378, pls. 1–49 (1872); pt. 3, 379–628 +1, pls. 50–77 (1873); pt. 4, 629–762, pls. 78–94 (1874).

Bellosi, E. (1990) Formación Chenque: Registro de la transgresión patagoniana (Terciario medio) de la cuenca de San Jorge, Argentina. Actas 11º Congreso Geológico Argentino, San Juan, 2, 57–60.

Caviglia, S.E., Martínez, S.A. & del Río, C.J. (2007) A new Early Miocene species of Ophiocrossota (Ophiuroidea) from southern Patagonia, Argentina. Neues Jahrbuch für Geologie und Paläontologie, 245, 147–152.
http://dx.doi.org/10.1127/0077-7749/2007/0245-0147

David, B., Mooi, R. & Telford, M. (1996) The ontogenetic basis of Lovén's Rule clarifies homologies of the echinoid peristome. In: Emson, R., Smith, A.B. & Campbell, A. (Eds.), Echinoderm Research 1995. Balkema, A.A., Rotterdam, pp. 155–164.

del Río, C.J. (2004) Tertiary marine molluscan assemblages of eastern Patagonia (Argentina): a biostratigraphic analysis. Journal of Paleontology, 78, 1097–1122.
http://dx.doi.org/10.1666/0022-3360(2004)078<1097:TMMAOE>2.0.CO;2

Desor, E. (1847) Sur quelques oursins fossiles de la Patagonie. Bulletin de la Société Géologique de France, (2), 4, 287–288.

Durham, J.W. (1953) Type species of Scutella. Journal of Paleontology, 27, 347–352.

Durham, J.W. (1955) Classification of clypeasteroid echinoids. California University Publications in Geological Science, 31, 73–198.

Durham, J.W. (1966) Clypeasteroids. In: Moore, R.C. (Ed.), Treatise on Invertebrate Paleontology, Part U. Echinodermata. 3 (2). Geological Society of America and The University of Kansas Press, Boulder, CO & Lawrence, KS, pp. U450–U491.

Grant, U.S. IV & Hertlein, L.G. (1938) The West American Cenozoic Echinoidea. Publications of the University of California at Los Angeles in Mathematical and Physical Sciences, 2, 1–225.

Haeckel, E.H.P.A. (1896) Systematische Phylogenie der Wirbellosen Thiere (Invertebrata). Zweiter Theil des Entwurfs einer systematischen Stammesgeschichte. Reimer, Berlin, 720 pp.
http://dx.doi.org/10.1515/9783111443935

Kroh, A., Mooi, R., del Río, C. & Neumann, C. (2013) A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia. Zootaxa, 3608 (5), 369–378.
http://dx.doi.org/10.11646/zootaxa.3608.5.5

Lahille, F. (1896) Variabilité et affinités du Monophora darwini. Revista del Museo de la Plata, 7, 411–444.

Lambert, J.M. & Thiéry, P. (1909–1925) Essai de nomenclature raisonnée des Échinides. Chaumont, Librairie L. Ferière. 607 pp.

Latreille, P.A. (1825) Familles naturelles du règne animal. Baillière, Paris, 570 pp.

Leske, N.G. (1778) Jacobi Theodori Klein naturalis dispositio echinodermatum . . ., edita et descriptionibus novisque inventis et synonomis auctorem aucta. Addimenta ad I. T. Klein naturalem dispositionem Echinodermatum. G. E. Beer, Leipzig, xxii+278 pp.

Martínez, S. (1984) Amplaster coloniensis n. g. n. sp. (Echinoidea: Monophorasteridae) del Mioceno de Uruguay. In: del Carmen, P.M. (Ed.), Memoria III Congreso Latinoamericano de Paleontologia Instituto de Geologia de la UNAM, Mexico, D.F., pp. 505–508.

Martínez, S., Reichler, V. & Mooi, R. (2005) A new species of Abertella (Echinoidea: Scutellina) from the Gran Bajo del Gualicho Formation (Late Early Miocene-Early Middle Miocene), Río Negro Province, Argentina. Journal of Paleontology, 79 (6), 1229–1233.
http://dx.doi.org/10.1666/0022-3360(2005)079[1229:ANSOAE]2.0.CO;2

Martínez, S.A., del Río, C.J. & Perez, D.E. (2009) A brittle star bed from the Miocene of Patagonia, Argentina. Lethaia, 43, 1–9.
http://dx.doi.org/10.1111/j.1502-3931.2009.00163.x

Mooi, R. (1989) Living and fossil genera of the Clypeasteroida (Echinoidea: Echinodermata): An illustrated key and annotated checklist. Smithsonian Contributions to Zoology, 488, 1–51.
http://dx.doi.org/10.5479/si.00810282.488

Mooi, R., Martínez, S. & Parma, S.G. (2000) Phylogenetic systematics of Tertiary monophorasterid sand dollars (Clypeasteroida: Echinoidea) from South America. Journal of Paleontology, 74 (2), 263–281.
http://dx.doi.org/10.1666/0022-3360(2000)074<0263:PSOTMS>2.0.CO;2

Osborn, A.S. & Ciampaglio, C.N. (2010) A new species of Abertella (Echinoidea, Scutellina) from the Late Miocene (Tortonian) Peace River Formation of Hardee County, Florida. Southeastern Geology, 47, 207–218.

Parma, S.G. (1985) Eoscutella Grant y Hertlein (Echinodermata: Clypeasteroida) en el Patagoniano (Terciario inferior) de la Provincia de Santa Cruz, República Argetina. Ameghiniana, 22, 35–41.

Rossi de García, E. & Levy, R. (1986) Presencia de Amplaster n.sp. (Echinodermata, Clypeasteroidea) en el Terciario de Patagonia. 4° Congreso Argentino de Paleontología y Bioestratigrafía, (Mendoza), Actas, 4, 89–92.

Seilacher, A. (1979) Constructional morphology of sand dollars. Paleobiology, 5, 191–221.
http://dx.doi.org/10.1017/S0094837300006527

Telford, M. (1988) Ontogenetic regulatory mechanisms and evolution of mellitid lunules (Echinoidea, Clypeasteroida). Paleobiology, 14, 52–63.
http://dx.doi.org/10.1017/S0094837300011799

Telford, M., Mooi, R. & Ellers, O. (1985) A new model of podial deposit feeding in the sand dollar, Mellita quinquiesperforata (Leske): The sieve hypothesis challenged. Biological Bulletin, 169, 431–448.
http://dx.doi.org/10.2307/1541493




DOI: http://dx.doi.org/10.11646/zootaxa.4173.1.4

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