|
|
|
|
|
| De Moraes Leme,Juliana; Guimarães Simões,Marcello; Van Iten,Heyo. |
| The holotype of Malvinoconularia cahuanotensis (Brania and Vanek) (Devonian, Bolivia), the type species of the monospecific genus Malvinoconularia Babcock et al., is redescribed and refigured. M. cahuanotensis exhibits several gross morphological features that together are uniquely shared with Reticulaconularia baini (Babcock and Feldmann). In both taxa, the transverse ribs are nodose, the interspaces bear longitudinal ridges (bars or crests) that are collinear (line up) across the transverse ribs, and the longitudinal centerline (midline) of the faces is marked by a subdued ridge. Additionally, the two species may also be similar in the anatomy and external ornament of the corner sulcus. The slightly undulose geometry of the transverse ribs of M.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bolivia; Devonian; Conulariids; Cnidaria; Systematics. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142006000200003 |
| |
|
|
| Gaugris,Kariny De Amorim; Grahn,Yngve. |
| Devonian chitinozoans from two wells in the north-northwestern outcrop belt of the Paraná Basin, and three in the eastern outcrop belt of the same basin, have been investigated for this study. A new, hitherto undescribed chitinozoan assemblage of Early Devonian, pre-late Emsian age is recognized above the Ramochitina magnifica Lange interval range Zone, in addition to new species from younger Devonian beds. A new Early Devonian biozone, the Ancyrochitina pachycerata interval range Zone, is erected. Altogether, 16 new species are described of which 10 are left in open nomenclature due to insufficient number of well-preserved specimens. The biostratigraphy of the new chitinozoan species is compared with the chitinozoa and miospore zones previously recognized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Devonian; Chitinozoa; Paraná Basin; Brazil. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142006000200004 |
| |
|
| |
|
| |
|
| |
|
|
| Viersen, A.P. van. |
| The Middle Eifelian trilobite fauna of the Belgian Ardennes shows close affinities with that of the German Eifel. Two trilobite taxa are recorded from Middle Eifelian strata near the town of Jemelle, on the southern border of the Dinant Synclinorium, Belgium. Kettneraspis bayarti sp. nov. is closely related to Kettneraspis elliptica (Burmeister) from the Middle Eifelian of the Rhenish Slate Mountains. Ceratarges cf. armatus (Goldfuss) is also described on the basis of a single pygidium. The odontopleurid Charybdaspis Basse is considered a junior subjective synonym of Radiaspis Richter & Richter. The lichid Rhenarges Basse is briefly discussed and regarded as a junior subjective synonym of Akantharges Phleger. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Trilobites; Taxonomy; Devonian; Ardennes; Belgium; 38.22; 42.74. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/217412 |
| |
|
|
|
