Ordovician erratic sponges from Gotland, Sweden

Rhebergen, Freek; Hacht, Ulrich von

doi:10.1080/11035890001224339

Cited by 8 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rhebergen & Von Hacht (1996) published the results of an extensive inventory of erratic sponges distinguished on the basis of assemblage and possible provenance. They also described the composition of the erratic sponge assemblage from Gotland (Rhebergen & Von Hacht 2000). Rhebergen et al (2001) summarized all these data in a monographic treatment of erratic Ordovician sponges.…”

Section: Previous Studies On Fluvial Clasticsmentioning

confidence: 97%

Ordovician sponges (Porifera) and other silicifications from Baltica in Neogene and Pleistocene fluvial deposits of the Netherlands and northern Germany

Rhebergen¹

2009

Estonian J. Earth Sci.

View full text Add to dashboard Cite

Fluvial deposits of Miocene to Early Pleistocene age in Germany and the Netherlands were laid down in the delta of the Eridanos River System, but the exact provenance of this material continues to be a subject of discussion. The aim of the present study is twofold. Firstly, a comparison of Ordovician sponges in these deposits with those from northern Estonia and the St Petersburg region (Russia) demonstrates that these erratics originated from the drainage area of the Pra Neva, a tributary of the Eridanos. Secondly, the importance of Late Ordovician silicified boulders, which yield forms of preservation that are unknown in comparable fossils, preserved in situ, is outlined. Some recommendations for future studies are made.

show abstract

Section: Previous Studies On Fluvial Clasticsmentioning

confidence: 97%

Ordovician sponges (Porifera) and other silicifications from Baltica in Neogene and Pleistocene fluvial deposits of the Netherlands and northern Germany

Rhebergen¹

2009

Estonian J. Earth Sci.

View full text Add to dashboard Cite

show abstract

“…According to Rauff (1894), King (1943), Finks (1960), Rigby (1977Rigby ( , 1986, Zhan-Qiu (1981) and van Kempen (1990a), most Chiastoclonellidae are of Permian age and occur predominantly in North America and China. The oldest representatives known to date are erratic, isolated, silicified sponge bodies, of Late Ordovician age, originating from Baltica and collected from fluvial deposits in Germany, the Netherlands, and on Gotland (van Kempen 1990a;Rhebergen & von Hacht 2000;Rhebergen et al 2001).…”

Section: Plate 10 Figures 1-3mentioning

confidence: 99%

“…The only Llandovery-age lithistids described to date are Calycocoelia (Zhan-Qiu 1990) from the Yangtze Platform, and H. sphaeroidalis (Rhebergen 2005 (Rhebergen & von Hacht 2000) from as yet unknown provenance on Baltica; 3 Silurian (Wenlock to Ludlow) assemblages from northern Canada (Rigby & Dixon 1979;Rigby & Chatterton 1989, 1999; de Freitas 1989de Freitas , 1991 The large majority of taxa in the Telychian assemblage are absent from the Ordovician assemblage. The assemblages have only six species in common, two of which are cosmopolitan (H. sphaeroidalis and Archaeoscyphia minganensis).…”

Section: Palaeobiogeography and Community Evolutionmentioning

confidence: 99%

“…Van Kempen (1983) described another aberrant erratic specimen from Gnisv€ ard (Gotland) and followed Rauff's determination. Additional specimens of identical or similar aberrant forms, collected by Mrs. Heilwig Leipnitz, Uelzen (Germany), led to further investigation of the collections of the Swedish Museum of Natural History (Rhebergen & von Hacht 2000). Rhebergen & van Kempen (2002) established the genus Caryoconus, by then dated as Early Silurian (Llandovery to Wenlock), as discussed below.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation