The oldest African eucryptodiran turtle from the Cretaceous of Angola

• Autorzy: Mateus O. , Jacobs L. , Polcyn M. , Schulp A. S. , Vineyard D. , Buta Neto A. , Antunes M. T.
• Języki publikacji: EN

Abstrakty

EN

A new Late Cretaceous turtle, Angolachelys mbaxi gen. et sp. nov., from the Turonian (90 Mya) of Angola, represents the oldest eucryptodire from Africa. Phylogenetic analysis recovers Angolachelys mbaxi as the sister taxon of Sandownia harrisi from the Aptian of Isle of Wight, England. An unnamed turtle from the Albian Glen Rose Formation of Texas (USA) and the Kimmeridgian turtle Solnhofia parsonsi (Germany), are successively more distant sister taxa. Bootstrap analysis suggests those four taxa together form a previously unrecognized monophyletic clade of marine turtles, herein named Angolachelonia clade nov., supported by the following synapomorphies: mandibular articulation of quadrate aligned with or posterior to the occiput, and basisphenoid not visible or visibility greatly reduced in ventral view. Basal eucryptodires and angolachelonians originated in the northern hemisphere, thus Angolachelys represents one of the first marine amniote lineages to have invaded the South Atlantic after separation of Africa and South America.

Słowa kluczowe

EN

Cretaceous; fauna; Africa; eucryptodiran turtle; turtle; Eucryptodira; Angola; paleobiogeography; Turonian; phylogenetic analysis

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2009
• Tom: 54
• Numer: 4
• Opis fizyczny: p.581-588,fig.,ref.

Twórcy

autor

Mateus O.

• Departamento de Ciencias da Terra, Universidade Nova de Lisboa, Lisbon, Portugal

autor

Jacobs L.

autor

Polcyn M.

autor

Schulp A. S.

autor

Vineyard D.

autor

Buta Neto A.

autor

Antunes M. T.

Bibliografia

• Antunes, M.T. 1964. O Neocretácico e o Cenozóico do litoral de Angola. 255 pp. Junta de Investigações do Ultramar, Lisboa.
• Antunes, M.T. and Cappetta, H. 2002. Sélaciens du Crétacé (Albien–Maastrichtien) d’Angola. Palaeontographica, Abteilung A: Paläozoologie–Stratigraphie 264: 85–146.
• Baily, W.H. 1855. Description of some Cretaceous fossils from South Africa. Quarterly Journal of the Geological Society of London 11: 454–465.
• Billon−Bruyat, J.−P., Lécuyer, C., Martineau, F., and Mazin, J.−M. 2005. Oxygen isotope compositions of Late Jurassic vertebrate remains from lithographic limestones of western Europe: implications for the ecology of fish, turtles, and crocodilians. Palaeogeography, Palaeoclimatology, Palaeoecology 216: 359–375. doi:10.1016/j.palaeo.2004.11.011
• Broin, F.L. 2000. African chelonians from the Jurassic to the Present: Phases of development and preliminary catalogue of the fossil record. Palaeontologica Africana 36: 43–82.
• Dollo, L. 1913. Podocnemis congolensis, tortue fluviatile nouvelle du Montien (Paléocene inférieur) du Congo et evolution des Cheloniens fluviatiles. Annales du Musee du Congo Belge 3: 47–65.
• Gaffney, E.S., 1975. Solnhofia parsoni, a new cryptodiran turtle from the Late Jurassic of Europe. American Museum Novitates 2576: 1–22.
• Gaffney, E.S. 1976. Cranial morphology of the European Jurassic turtles Portlandemys and Plesiochelys. Bulletin of the American Museum of Natural History 157: 491–543.
• Gaffney, E.S. 1979. Comparative cranial morphology of recent and fossil turtles. Bulletin of the American Museum of Natural History 164: 65–375.
• Gaffney, E.S., Roberts, E., Sissoko, F., Bouaré, M.L., Tapanila, L., and O'Leary, M.A. 2007. Acleistochelys, a new side−necked turtle (Pelomedusoides: Bothremydidae) from the Paleocene of Mali. American Museum Novitates 3549: 24 S. doi: 10.1206/0003−0082(2007)3549 [1:AANSTP]2.0.CO;2
• Gaffney, E.S. Tong, H., and Meylan, P.A. 2006. Evolution of the sidenecked turtles: The families Bothremydidae, Euraxemydidae and Araripemydidae. Bulletin of the American Museum of Natural History 300: 698 S. doi: 10.1206/0003−0090(2006)300[1:EOTSTT]2.0.CO;2
• Hay, W.W., Deconto, R.M., Wold, C.N., Wilson, K.M., Voigt, S., Schulz, M., Wold, A.R., Dullo, W.−C., Ronov, A.B., Balukhovsky, A.N., and Söding, E. 1999. Alternative global Cretaceous paleogeography. In Evolution of the Cretaceous Ocean−Climate system. In: E. Barrera and C.C. Johnson (ed.), Evolution of the Cretaceous Ocean−Climate System. Geological Society America. Special Papers 332: 1–47.
• Hirayama, R. 1998. Oldest known sea turtle. Nature 392: 705–708. doi: 10.1038/33669
• Jacobs, L.L., Mateus, O., Polcyn, M.J., Schulp, A.S., Antunes, M.T., Morais, M.L., and Tavares, T.S. 2006. The occurrence and geological setting of Cretaceous dinosaurs, mosasaurs, plesiosaurs, and turtles from Angola. Journal Paleontologal Society Korea 22: 91–110.
• Jacobs, L.L. , Mateus, O., Polcyn, M.J., Schulp, A.S., Scotese, C.R., Goswami, A., and Ferguson, K.M. 2009. Cretaceous paleogeography, paleoclimatology, and amniote biogeography of the low and mid−latitude South Atlantic Ocean. Bulletin de la Société Géologique de France 180 (4): 333–341. doi:10.2113/gssgfbull.180.4.333
• Joyce, W.G. 2007. Phylogenetic relationships of Mesozoic turtles. Bulletin Peabody Museum Natural History 48: 3–102. doi: 10.3374/0079−032X(2007)48[3:PROMT]2.0.CO;2
• Karl, H.V. and Tichy, G. 2002. Australobaena chilensis n. gen. n. sp., and the homology of secondary palatines in turtles (Anapsida: Testudines). Studia Geologica Salmanticensia 38: 11–19.
• Kear, B.P. 2003. Cretaceous marine reptiles of. Australia: a review of taxonomy and distribution. Cretaceous Research 24: 277–303. doi:10.1016/S0195−6671(03)00046−6
• Lynch, S.C. and Parham, J.F. 2003. The first report of hard−shelled sea turtles (Cheloniidae sensu lato) from the Miocene of California, including a new species (Euclastes hutchisoni) with unusually plesiomorphic characters. PaleoBios 23: 21–35.
• Meylan, P.A., Moody, R.J.T., Walker, C.A., and Chapman, S.D. 2000. Sandownia harrisi, a highly derivid trionychoid turtle (Testudinata: Cryptodira) from the Early Cretaceous of the Isle of Wright, England. Journal of Vertebrate Paleontology 20: 522–532. doi:10.1671/0272−4634(2000)020[0522:SHAHDT]2.0.CO;2
• Parham, J.F. 2005. A reassessment of the referral of sea turtle skulls to the genus Osteopygis (Late Cretaceous, New Jersey, USA). Journal of Vertebrate Paleontology 25: 71–77. doi:10.1671/0272−4634(2005)025[0071:AROTRO]2.0.CO;2
• Parham, J.F. and Fastovsky, D.E. 1997. The phylogeny of cheloniid sea turtles revisited. Chelonian Conservation and Biology 2: 548–554.
• Rieppel, O. 1980. The skull of the Upper Jurassic cryptodire turtle Thalassemys, with a reconsideration of the chelonian braincase. Palaeontographica, Abteilung A: Paläozoologie–Stratigraphie 171: 105–140.
• Zangerl, R. 1971. Two toxochelyid sea turtles from the Landenian Sands of Erquelinnes (Hainaut) of Belgium. Institut Royal des Sciences Naturelles de Belgique, Memoires 169: 1–32.