The German-Tanzanian Tendaguru Expedition 2000

Heinrich, Wolf‐Dieter; Bussert, Robert; Aberhan, Martin; Hampe, Oliver; Kapilima, Saidi; Schrank, Eckart; Schultka, Stephan; Maier, Gerhard; Msaky, Emma; Sames, Benjamin; Chami, Remigius

doi:10.1002/mmng.4860040113

Cited by 6 publications

(12 citation statements)

References 26 publications

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“…The saurian beds have been described as mainly calcite-cemented siltstones and fine-grained sandstones, while the marine intercalations are predominantly calcite-cemented, bioclast-rich sandstones and silicious-sandy limestones (Heinrich et al 2001; figure 1). Bussert and Aberhan (2004) interpreted conglomeratic layers in the Trigonia smeei Bed as storm deposits and in a few cases as tsunami deposits.…”

Section: Stratigraphic Frameworkmentioning

confidence: 99%

“…Bussert and Aberhan (2004) interpreted conglomeratic layers in the Trigonia smeei Bed as storm deposits and in a few cases as tsunami deposits. Although the marine beds have yielded thousands of invertebrate fossils, including cephalopods and bivalves, the exact age of the Tendaguru Beds still remains uncertain (Heinrich et al 2001). The systematic study of ammonites by Zwierzycki (1914) resulted in a possibly Oxfordian or less likely Kimmeridgian age for the Nerinea Bed.…”

Section: Stratigraphic Frameworkmentioning

confidence: 99%

“…Selected aspects of the long history of research on the Tendaguru locality have been reviewed by Zils et al (1995), Heinrich (1999), Heinrich et al (2001) and Maier (2003). Initial studies on the palynology of this site were based partly on material collected by the early German expeditions in 1909-1913(Jarzen 1981Schrank 1999).…”

Section: Introductionmentioning

confidence: 99%

“…Initial studies on the palynology of this site were based partly on material collected by the early German expeditions in 1909-1913(Jarzen 1981Schrank 1999). In 2000, a joint German-Tanzanian expedition provided the opportunity to restudy some sections in the immediate surroundings of Tendaguru Hill (Figure 1), the type locality of the Tendaguru Beds, and to collect samples for sedimentological, micropaleontological, palynological and other investigations (Heinrich et al 2001). Palynological studies based on material collected in 2000 focused on the re-interpretation of the alleged dinoflagellate cyst Mendicodinium?…”

Section: Introductionmentioning

confidence: 99%

“…quadratum as a gymnosperm pollen *Email: e.schrank@tu-berlin.de Figure 1. Geological map and section of the Tendaguru Beds modified from Bussert (in Heinrich et al, 2001 andAberhan et al, 2002). Tin1 to Tin9 ¼ Tingutinguti section; Dwa6 ¼ Dwanika section; Nam1 ¼ Namunda Plateau, about 8 km south of Tendaguru.…”

Section: Introductionmentioning

confidence: 99%

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Pollen and spores from the Tendaguru Beds, Upper Jurassic and Lower Cretaceous of southeast Tanzania: palynostratigraphical and paleoecological implications

Schrank

2010

Palynology

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Two informal sporomorph assemblage zones can be distinguished in the dinosaur-bearing Tendaguru Beds of southeast Tanzanian. The first zone, the Classopollis-Araucariacites-Shanbeipollenites Assemblage Zone, ranges from the Lower to the Upper Saurian Bed, and a mid-Oxfordian to Tithonian age is suggested based on the presence of Shanbeipollenites quadratus. The second zone, the Classopollis-Cicatricosisporites-Ruffordiaspora Assemblage Zone, is restricted in the Trigonia schwarzi Bed, which overlies the Upper Saurian Bed. The combined ranges of Cicatricosisporites hughesii, Ruffordiaspora australiensis and Trilobosporites obsitus would be consistent with a late Berriasian to Hauterivian age of this zone. This is refined further to late Valanginian to Hauterivian on the basis of already existing evidence from fauna and dinoflagellate cysts. From a phytogeographic point of view the Tendaguru locality belongs to the southern Gondwana Trisaccates Province because of the presence of trisaccate podocarpaceous pollen. The quantitative composition of the palynofloras is characterized by the dominance or abundance of pollen produced by the two conifer families Cheirolepidiaceae (Classopollis) and Araucariaceae (mainly Araucariacites). Pollen of Cheirolepidiaceae, typically xerophytic, drought-resistant, thermophilic plants, is dominant throughout the Tendaguru Beds except in parts of the Middle Saurian Bed where pollen of Araucariaceae, a presumably mesic group, becomes most abundant. Classopollis attains the highest degree of dominance in the shallow marine deposits associated with the saurian beds. This may be related to paleoecological and taphonomic factors, namely abundance of Classopollis-producing plants in low-lying coastal environments close to the lagoonlike depositional sites and transportational sorting of sporomorphs leading to a relative enrichment of small and/or anemophilous pollen. The abundance of Araucariacites in the Middle Saurian Bed suggests that araucarians existed in coastal plain environments that were stable enough to allow the growth of large trees. This open araucarian forest, which may have been a source of food for high-browsing dinosaurs, was situated landward of the cheirolepidiacean belt not far from the depositional sites. Pteridophytes and bryophytes were concentrated at moist places and around water bodies. Podocarpaceous conifers producing bisaccate and trisaccate pollen grew in local uplands, while gnetaleans related to Ephedra and Welwitschia may have been present in dry places. The palynological evidence is consistent with a seasonally dry, tropical to sub-tropical paleoclimate. Three new combinations, Equisetosporites certus (Bolkhovitina), Jugella caichigu¨ensis (Volkheimer and Quattrocchio) and Trichotomosulcites microsaccatus (Couper), are proposed, and Jugella semistriata is described as a new species.

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Section: Stratigraphic Frameworkmentioning

confidence: 99%

Section: Stratigraphic Frameworkmentioning

confidence: 99%