Conodont faunas from the upper Tremadoc at Brattefors, south‐central Sweden, and reconstruction of thePaltodusapparatus

Publisher Website
Google Scholar
Abstract
The Brattefors “plugs” are collapse structures in which a sedimentary sequence from the upper Tremadoc has been preserved more completely than elsewhere in south‐central Sweden. The Brattefors sequence yielded conodonts that can increase our knowledge of this interval, and improve the correlation of the mainly endemic faunas in Baltoscandia on the one side of the Iapetus with those of Laurentia on the other. The rich and well‐preserved conodont faunas from Brattefors have also enabled a detailed study of the early stages of some important conodont lineages from Baltoscandia. For instance, redeposited material of Paltodus d. pristinus from the lower part of the sequence and a collection of extremely well‐preserved Paltodus d. deltifer elements from the fauna living at the time of deposition of the same beds, provide the basis for a study of Paltodus. Additional material from other localities where Paltodus cf. P. subaequalis occurs in the lower part of the Paroistodus proteus Zone and also specimens of Paltodus subaequalis from the upper P. proteus Zone have been used to interpret the Paltodus apparatus. This is reconstructed as septimembrate with 1Sa, 2Sb, 2Sc, 2Sd, 2Pa, 2Pb, and 6M elements; 17 elements in all. Löfgren, A., 1997: Conodont faunas from the upper Tremadoc at Brattefors, south‐central Sweden, and reconstruction of the Paltodus apparatus. GFF, Vol. 119 (Pt. 4, December), pp. 257–266. Stockholm. ISSN 1103–5897.