Late Paleozoic turrilepadid machaeridians from North America

• Autorzy: Hoare R D , Mapes R H , Yancey T E , Nestell M K
• Języki publikacji: EN

Abstrakty

EN

Turrilepadids are not uncommon in late Paleozoic shales being often associated with ostracodes, foraminifers, and minute molluscs. In North America they range from the late Missippian (Chesterian) to early Permian (Leonardian). Sclerites of the inner scleritome row are more common than outer sclerites. Some clusters have been found. Sclerite consists of two layers with the thicker, lower layer penetrated by a transverse tubular structures oriented perpendicular to the sclerite surface, which may represent canals related to the papillae on the inner surface of the sclerite. Turrilepas Lepros sp. n., T. trigoniodes sp. n., T. asketos sp. n., Clarkeolepis alloeospinosa sp. n., and Ambonlepidas petalos gen. et sp. n. are proposed.

PL

Machaeridia (pospolite we wczesnym paleozoiku organizmy o nieustalonych pokrewieństwach) z rzędu Turrilepadida są częstsze w młodszym paleozoiku, niż się dotąd spodziewano. W Ameryce Płn. występują od namuru (Chesterian) do wczesnego permu. Skleryty wewnętrznego rzędu pancerza są z jakichś powodów częstsze w materiale kopalnym. Każdy skleryt składa się z dwu warstw. Wewnętrzna, grubsza warstwa przebita jest licznymi rurkowatymi strukturami prostopadłymi do powierzchni sklerytu, które mogły pierwotnie stanowić kanały.

Słowa kluczowe

PL

fauna kopalna; perm; namur; Ameryka Polnocna; paleozoik; skamienialosci; Turrilepadida; Machaeridia; cechy morfologiczne; paleontologia; skleryty

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 1996
• Tom: 41
• Numer: 2
• Opis fizyczny: s.127-145,rys.,fot.,bibliogr.

Twórcy

autor

Hoare R D

• Department of Geology, Bowling Green State University, Bowling Green, Ohio 43403 USA

autor

Mapes R H

• Department of Geological Sciences, Ohio University, Athens, Ohio 45701 USA

autor

Yancey T E

• Department of Geology and Geophysics, Texas A&M University, College Station, Texas 77843 USA

autor

Nestell M K

• Department of Geology, University of Texas at Arlington, Arlington, Texas 76019 USA

Bibliografia

• Adrain, J.M. 1992. Machaeridian classification. Alcheringa 16, 15-32.
• Adrain. J.M., Chatterton B.D.E., & Cocks L.R.M. 1991. A new species of machaeridian from the Silurian of Podolia, USSR, with a review of the Turrilepadidae. Palaeontology 34, 637-651.
• Bengtson, S. 1978. The Machaeridia - a square peg in a pentagonal hole. Thalassia Yugoslavia 12, 1-10.
• Clarke, J.M. 1896. Lepadidae. In: J. Hall & J.M. Clarke, Natural History of New York, Palaeontology 7, 212-220.
• Dzik, J. 1986. Turrilepadida amd other Machaerida. In: A. Hoffman & M.H. Nitecki (eds) Problematic Fossil Taxa, 116-134. Oxford University Press, New York.
• Elias, M.K. 1958. Late Mississippian fauna from the Redoak Hollow Formation of southern Oklahoma, Part 4, Gastropoda, Scaphopoda, Cephalopoda, Ostracoda, Thoracia, and Problematica. Journal of Palaeontology 32, 1-57.
• Koninck, L. de. 1857. Sur deux nouvelles espèces siluriennes appartenant au genre Chiton Bulletin de l'Académie des Sciences de Belgique 3, 190-199.
• Pilsbry, H.A. 1916. The sessile barnacles (Cirripedia) contained in the collections of the U.S. National Museum; including a monograph of the American species. Bulletin of the United States National Museum 93, 1-366.
• Winslow, M.L. 1983. Pateontology and stratigraphy of the Harpersville Formation, southwestern Stevens County, Texas. Unpubl. M.S. thesis, University of Texas at Arlington, Arlington, 196 pp.
• Withers, T.H. 1926. Catalogue of the Machaeridia (Turrilepas and its allies) in the Department of Geology. 99 pp. British Museum (Natural History), London.
• Woodward, H. 1865. On the discovery of a new genus of Cirripedia in the Wenlock Limestone and Shale of Dudley. Quarterly Journal of the Geological Society of London 21, 486-489.