Were mammals originally venomous?

• Autorzy: Hurum J H , Luo Z.X. , Kielan-Jaworowska Z.
• Języki publikacji: EN

Abstrakty

EN

The extratarsal spur in extant monotremes consists of an os calcaris and a cornu calcaris. A poisonous extratarsal spur occurs only in the platypus (Ornithorhynchus); a possibly secondarily non−poisonous spur is present in echidnas (Tachyglossus and Zaglossus). Some therian mammals (e.g., bats), reptiles (Chamaeleo), and amphibians have a spur−like structure in the ankle, but this is not homologous to the extratarsal spur of monotremes. Among fossil mammals, the co−ossified os calcaris and ossified cornu calcaris have been found in the eutriconodontan Gobiconodon and in the spalacotheroid “symmetrodontan” Zhangheotherium. Here we describe the os calcaris in several multituberculate mammals from the Late Cretaceous of the Gobi Desert, Mongolia. The multituberculate os calcaris is a large, flat bone, generally similar to that in males of the extant monotreme species, but the cornu calcaris is not ossified. In Gobiconodon and Zhangheotherium the ossified cornu calcaris is fused to the os calcaris probably to provide the bony support for the keratinous spur. We hypothesize that the os calcaris in these Mesozoic mammal groups is homologous to that of monotremes. However, the extratarsal spur has not been found in non−mammalian cynodonts nor in other synapsids. A platypus−like os calcaris might be an apomorphic characteristic of basal Mesozoic mammals and is secondarily lost in crown therians; the os calcaris is confirmed to be absent in well−preserved tarsal structures of the earliest known crown therian mammals. We speculate that the os calcaris, the cornu calcaris, and its associated venom gland might have served the function of a defensive structure during the “dark ages” of mammalian history, when dinosaurs ruled the Earth. This structure is a plesiomorphic character retained in extant monotremes and cannot be used as an autapomorphy of Monotremata.

Słowa kluczowe

EN

Gobiconodon; Monotremata; mammal; os calcaris; Zhangheotherium; cornu calcaris; fossil mammal; Multituberculata; paleontology

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2006
• Tom: 51
• Numer: 1
• Opis fizyczny: p.1-11,fig.,ref.

Twórcy

autor

Hurum J H

• Naturhistorisk Museum, Boks 1172 Blindern, N-0318 Oslo, Norway

autor

Luo Z.X.

autor

Kielan-Jaworowska Z.

Bibliografia

• Ackerman, J. 1998. “Dinosaurs Take Wing”. National Geographic 194 (1): 189–192.
• Ax, P. 1984. Das Phylogenetische System. Systematisierung der lebenden Natur aufgrund ihrer Phylogenese. 349 pp. Gustav Fischer Verlag, Stuttgart.
• Benton, J. M. 2000. Mongolian place names and stratigraphic terms.In: M.J.
• Benton, M.A., Shishkin, D.M. Unwin, and E.N. Kurochkin (eds.), The Age of Dinosaurs in Russia and Mongolia, xxii–xxviii. Cambridge University Press, Cambridge.
• Bücherl, W., Buckley, E.E., and Deulofeu, V. (eds.) 1968. Venomous animals and their venoms, Vol. I, Venomous Vertebrates. 707 pp. Academic Press, New York.
• Calaby, J.H. 1968. The platypus (Ornithorhynchus anatinus) and its venomous characteristics. In: W. Büchler, E.E. Buckley, and V. Deulofeu (eds.), Venomous Animals and their Venoms, Volume I, 15–29. Academic Press, New York.
• Clemens, W.A. 1966. Fossil mammals from the type Lance Formation, Wyoming. Part II. Marsupialia. University of California Publications in Geological Sciences 62: 1–122.
• Crompton, A.W. and Luo, Z.−X. 1993. Relationships of the Liassic mammals Sinoconodon, Morganucodon, and Dinnetherium. In: F. S. Szalay, M. J. Novacek, and M.C. McKenna (eds.), Mammal Phylogeny: Mesozoic Differentiation, Multituberculates, Monotremes, Early Therians, and Marsupials, 30–44. Springer−Verlag, New York.
• Crompton, A.W. and Sun, A.−L. 1985. Cranial structure and relationships of the Liassic mammal Sinoconodon. Zoological Journal of the Linnean Society 85: 99–119.
• Darwin, C.R. 1881. The Descent of Man and Selection in Relation to Sex. 2nd ed. 693 pp. John Murray, London.
• Emery, C. 1901. Hand−und Fusskelet von Echidna hystrix. Semon’s Zoologische Forschungsreisen in Australasia und dem Malaischen Archipel 3: 663–673.
• Fox, R.C. and Scott, C.S. 2005. First evidence of a venom delivery apparatus in extinct mammals. Nature 435: 1091–1093.
• Gambaryan, P.P., Aristov, A.A., Dixon, J.M., and Zubtsova, G.Y. 2002. Peculiarities of the hind limb musculature in monotremes: an anatomical description and functional approach. Russian Journal of Theriology 1 (1): 1–36.
• Grassé, P. 1955. Ordre des Monotrèmes. In: P. Grassé (ed.), Traité de Zoologie XVII, 1, 47–92. Masson et Cie, Paris.
• Gregory, W.K. 1947. The monotremes and the palimpsest theory. Bulletin of the American Museum of Natural History 88: 1–52.
• Griffiths, M. 1968. Echidnas. 282 pp. Pergamon Press, London.
• Griffiths, M. 1978. The Biology of the Monotremes. 367 pp. Academic Press, New York.
• Horovitz, I. 2000. The tarsus of Ukhaatherium nessovi (Eutheria, Mammalia) from the Late Cretaceous of Mongolia: an appraisal of the evolution of the ankle in basal therians. Journal of Vertebrate Paleontology 20: 547–560.
• Hu, Y. and Wang, Y.−Q. 2002. Sinobataar gen. nov.: first multituberculate from Jehol Biota of Liaoning, Northern China.Chinese Science Bulletin 47: 933–938.
• Hu, Y.−M, Meng, J., Wang, Y.−Q., and Li, C.−K. 2005. Large Mesozoic mammals fed on young dinosaurs. Nature 433: 149–152.
• Hu, Y.−M, Wang, Y.−Q., Luo, Z., and Li, C.−K. 1997. A new symmetrodont mammal from China and its implications for mammalian evolution. Nature 390: 137–142.
• Jenkins, F.A. Jr. and Parrington, F.R. 1976. The postcranial skeletons of the Triassic mammals Eozostrodon, Megazostrodon and Erythrotherium. Philosophical Transactions of the Royal Society of London 273: 387–431.
• Jenkins, F.A. Jr. and Schaff, C.R. 1988. The Early Cretaceous mammal Gobiconodon (Mammalia, Triconodonta) from the Cloverly Formation in Montana. Journal of Vertebrate Paleontology 6: 1–24.
• Jerison, H. 1973. Evolution of the Brain and Intelligence. 482 pp. Academic Press, New York.
• Ji, Q., Luo, Z.−X., and Ji, S.−A. 1999. A Chinese triconodont mammal and mosaic evolution of the mammalian skeleton. Nature 398: 326–330.
• Ji, Q., Luo, Z.−X., Yuan, C−X., Wible, J.R., Zhang, J.−P., and Georgi, J.A. 2002. The earliest known eutherian mammal. Nature 416: 816–822.
• Kielan−Jaworowska, Z. 1970. New Upper Cretaceous multituberculate genera from Bayn Dzak, Gobi Desert. Palaeontologia Polonica 21: 35–49.
• Kielan−Jaworowska, Z. 1974. Multituberculate succession in the Late Cretaceous of the Gobi Desert (Mongolia). Palaeontologia Polonica 30: 23–44.
• Kielan−Jaworowska, Z. 1977. Evolution of the therian mammals in the Late Cretaceous of Asia. Part II. Postcranial skeleton in Kennalestes and Asioryctes. Palaeontologia Polonica 37: 65–83.
• Kielan−Jaworowska, Z. 1978. Evolution of the therian mammals in the Late Cretaceous of Asia. Part III. Postcranial skeleton in Zalambdalestidae. Palaeontologia Polonica 38: 5–41.
• Kielan−Jaworowska, Z. and Gambaryan, P.P. 1994. Postcranial anatomy and habits of Asian multituberculate mammals. Fossils and Strata 36: 1–92.
• Kielan−Jaworowska, Z., Cifelli, R.L., and Luo Z.−X. 2004. Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure. 630 pp. Columbia University Press, New York.
• Kielan−Jaworowska, Z., Hurum, J.H., Currie, P.J., and Barsbold, R. 2002. New data on anatomy of the Late Cretaceous multituberculate mammal Catopsbaatar. Acta Palaeontologica Polonica 47: 557–560.
• Kielan−Jaworowska, Z., Hurum, J.H., and Lopatin, A. 2005. Skull structure in Catopsbaatar and the zygomatic ridges in multituberculate mammals. Acta Palaeontologica Polonica 50: 487–512.
• Krause, D.W. and Jenkins, F.A. 1983. The postcranial skeleton of North American multituberculates. Bulletin of the Museum of Comparative Zoology 150: 199–246.
• Krebs, B. 1991. Das Skelett von Henkelotherium guimarotae gen. et sp. nov. (Eupantotheria, Mammalia) aus dem Oberen Jura von Portugal. Berliner geowissenschaftliche Abhandlungen A 133: 1–110.
• Krusat, G. 1991. Functional morphology of Haldanodon exspectatus (Mammalia, Docodonta) from the Upper Jurassic of Portugal. In: Z. Kielan−Jaworowska, N. Heintz, and H.A. Nakrem (eds.),Fifth Symposium on Mesozoic Terrestrial Ecosystems and Biota, 37–38. Contributions from the Paleontological Museum, University of Oslo, 363, Oslo.
• Leche, W. 1900. Mammalia in Bronn’s Klassen und Ordnungen des Thierreichs. Vol. 6, part 5A, 236–648. C.F. Winter, Leipzig.
• Lewis, O.J. 1963. The monotreme cruro−pedal flexor musculature. Journal of Anatomy 97: 55–63.
• Lewis, O.J. 1964. The homologies of the mammalian tarsal bones. Journal of Anatomy 98: 195–208.
• Lewis, O.J. 1989. Functional Morphology of the Evolving Hand and Foot. 359 pp. Clarendon Press, Oxford.
• Li, G. and Luo, Z.−X. 2006. A Cretaceous symmetrodont therian with some monotreme−like postcranial features. Nature 439: 195–200.
• Li, J.−L., Wang, Y., Wang, Y.−Q., and Li, C.−K. 2001. A new family of primitive mammals from the Mesozoic of western Liaoning, China. Chinese Science Bulletin 46: 782–785.
• Li, C.−K., Wang, Y.−Q., Hu, Y.−M., and Meng, J. 2003. A new species of Gobiconodon (Triconodonta, Mammalia) and its implication for the age of Jehol Biota.Chinese Science Bulletin (English Edition) 48: 1129–1134.
• Luo, Z.−X. and Ji, Q. 2005. New study on dental and skeletal features of the Cretaceous mammal Zhangheotherium. Journal of Mammalian Evolution 12: 337–357.
• Luo, Z.−X., Kielan−Jaworowska, Z., and Cifelli, R.L. 2002. In quest for a phylogeny of Mesozoic mammals.Acta Palaeontologica Polonica 47: 1–78.
• Luo, Z.−X., Ji, Q., Wible, J.R., and Yuan, C.−X. 2003. An Early Cretaceous tribosphenic mammal and metatherian evolution. Science 302: 1934–1940.
• Manners−Smith, T. 1894. On some points in the anatomy of Ornithorhynchus paradoxus. Proceedings of the Zoological Society, London 1894: 694–722.
• Martin, T. 2005. Postcranial anatomy of Haldanodon exspectatus (Mammalia, Docodonta) from the Late Jurassic (Kimmeridgian) of Portugal, and its bearing for mammalian evolution. Zoological Journal of the Linnean Society 145: 219–248.
• McKenna, M.C. and Bell, S.K. 1997. Classification of Mammals Above the Species Level. 631 pp. Columbia University Press, New York.
• Meckel, J.F. 1826. Ornithorhynchi paradoxi. Descriptio anatomica. 63 pp. Leipzig.
• Mivart, St.G.J. 1874. The Common Frog. 158 pp. Macmillan, London.
• Moyal, A. 2001. Platypus—the Extraordinary Story of How a Curious Creature Baffled the World. 226 pp. Johns Hopkins University Press, Baltimore.
• Muizon, C. de (ed.) 1995. Pucadelphys andinus (Marsupialia, Mammalia) from the early Paleocene of Bolivia. Mémoires du Muséum National d’Histoire Naturelle (Paris) 165: 1–164.
• Muizon, C. de. 1998. Mayulestes ferox, a borhyaenoid (Metatheria, Mammalia) from the early Palaeocene of Bolivia. Phylogenetic and palaeobiologic implications. Geodiversitas 20: 19–142.
• Novacek, M.J., Rougier, G.W., Wible, J.R., McKenna, M.C., Dashzeveg, D., and Horovitz, I. 1997. Epipubic bones in eutherian mammals from the Late Cretaceous of Mongolia. Nature 389: 483–486.
• Rougier, G.W. 1993. Vincelestes neuquenianus Bonaparte (Mammalia, Theria), un primitivo mamífero del Cretácico Inferior de la Cuenca Neuquina. 720 pp. Ph.D. dissertation, Universidad Nacional de Buenos Aires, Buenos Aires.
• Rougier, G., Ji, Q., and Novacek, M.J. 2003. A new symmetrodont mammal with fur impressions from the Mesozoic of China. Acta Geologica Sinica 77 (1): 7–14.
• Schmidt, W. 1999. Chamaeleo calyptratus. Das Jemenchamäleon. 79 pp. Natur und Tier, Verlag GmbH, Münster.
• Schutt, W.A. and Simmons, N.B. 1998. Morphology and homology of the chiropteran calcar, with comments on the phylogenetic relationships of Archaeopteropus. Journal of Mammalian Evolution 5: 1–32.
• Shaw, G. 1792. The procupine ant−eater. The Naturalists’ Miscellany 3: 36.
• Shaw, G. 1799. The duck−billed platypus. The Naturalists’ Miscellany 10: pl. 385.
• Sudhaus, W. and Rehfeld, K. 1992 Einführung in die Phylogenetik und Systematik. 241 pp. Gustav Fischer Verlag, Stuttgart.
• Szalay, F.S., and Trofimov, B.A. 1996. The Mongolian Late Cretaceous Asiatherium, and the early phylogeny and paleobiogeography of Metatheria. Journal of Vertebrate Paleontology 16: 474–509.
• Vázquez−Molinero, R. 2003. Comparative Anatomy of Henkelotherium guimarote (Holotheria), a Late Jurassic Small Mammal, and its Relevance for the Evolution of the Mode of Locomotion of Modern Mammals. 125 pp. Ph.D. thesis, Freie Universität, Berlin.
• Vázquez−Molinero, R., Martin, T., Fischer, M.S., and Frey, R. 2001. Comparative anatomical investigations of the postcranial skeleton of Henkelotherium guimarotae Krebs, 1991 (Eupantotheria, Mammalia) and their implications on its locomotion. Mitteilungen aus dem Museum für Naturkunde in Berlin, Zoologische Reihe 77: 207–216.
• Wible, J.R. and Rougier, G.W. 2000. The cranial anatomy of Kryptobaatar dashzevegi (Mammalia, Multituberculata), and its bearing on the evolution of mammalian characters. Bulletin of the American Museum of Natural History 247: 1–124.