Ein parasitischer Nematode in fossiler Coleopteren-Muskulatur aus der eozänen Braunkohle des Geiseltales bei Halle (Saale)

Voigt, Ehrhard

doi:10.1007/bf02988959

Cited by 18 publications

(17 citation statements)

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“…For instance, the Cenozoic insect record includes: silicification (Palmer, 1957); phosphatisation and calcification (Leakey, 1952; Duncan & Briggs, 1996; Duncan, Briggs & Archer, 1998; McCobb et al, 1998; Grimaldi & Engel, 2005; Schwermann et al, 2016); and specimens preserved within gypsum crystals (Schlüter, Kohring & Gregor, 2002) Surprisingly, possibly silicified insects from Geiseltal (Eocene of Germany) have preserved respiratory system (tracheae), subcellular structures of muscles, digestive tract, reproductive organs, and glandular tissues (Voigt, 1938). …”

Section: Resultsmentioning

confidence: 99%

Deciphering the preservation of fossil insects: a case study from the Crato Member, Early Cretaceous of Brazil

Osés

Petri

Becker-Kerber

et al. 2016

PeerJ

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Exceptionally well-preserved three-dimensional insects with fine details and even labile tissues are ubiquitous in the Crato Member Konservat Lagerstätte (northeastern Brazil). Here we investigate the preservational pathways which yielded such specimens. We employed high resolution techniques (EDXRF, SR-SXS, SEM, EDS, micro Raman, and PIXE) to understand their fossilisation on mineralogical and geochemical grounds. Pseudomorphs of framboidal pyrite, the dominant fossil microfabric, display size variation when comparing cuticle with inner areas or soft tissues, which we interpret as the result of the balance between ion diffusion rates and nucleation rates of pyrite through the originally decaying carcasses. Furthermore, the mineral fabrics are associated with structures that can be the remains of extracellular polymeric substances (EPS). Geochemical data also point to a concentration of Fe, Zn, and Cu in the fossils in comparison to the embedding rock. Therefore, we consider that biofilms of sulphate reducing bacteria (SRB) had a central role in insect decay and mineralisation. Therefore, we shed light on exceptional preservation of fossils by pyritisation in a Cretaceous limestone lacustrine palaeoenvironment.

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Section: Resultsmentioning

confidence: 99%

Deciphering the preservation of fossil insects: a case study from the Crato Member, Early Cretaceous of Brazil

Osés

Petri

Becker-Kerber

et al. 2016

PeerJ

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“…Some authors who have described ball-and-pillow structures in calcareous rocks (Voigt, 1962;Kelling & Fig. 4.…”

Section: Discussionmentioning

confidence: 99%

Snowball structures and their slide origin in the Jebel Tekzim Limestone (Palaeozoic of the Jebilet Range, Morocco)

André¹

1989

Sedimentology

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Sedimentary ball structures observed in the Visean series of Jebel Tekzim, in the Palaeozoic massif of the eastern Jebilet Range, Morocco, are described and interpreted. The metre‐sized balls are composed of carbonate. They are texturally akin to wackestone or packstone, and some display a spiralled internal organization. The balls are encased in a calcarenitic to conglomeratic matrix and directly overlie a shale unit. The origin of the structures is thought to be analogous to the mechanism whereby an avalanche of wet snow gives rise to the deposition of snowballs at the base of a slope. A layer of carbonate sediment detaches along an organic‐rich horizon and rolls up during downslope movement under gravity.

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“…Another questionable fossil nematode is the specimen described by Voigt (1957) as a vertebrate parasitic nematode in the muscles of a fossil buprestid beetle, Chlorodema primordialis Pongraz, 1935 (Coleoptera: Buprestidae) from the Eocene brown coal deposits by Halle, Germany. The object in question is partially coiled up in a cyst-like compartment within the musculature of the beetle.…”

Section: Questionable Fossil Nematodesmentioning

confidence: 99%

6. Palaeontology of nematodes

Poinar¹

2013

Nematoda

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Cherts in Scotland. These 400 million year-old deposits were produced from hot springs and geysers that deposited silica in an opaline form called sinter around the fault zones. Silica molecules enter cells of organisms by permineralization and can provide excellent preservation of the internal tissues of small organisms such as nematodes. Trace fossilsTrace fossils are defined as any fossils showing the activity or growth of an organism. Those attributed to nematodes consist of trails or tracks left when movement occurs on a high viscosity surface. Sinuous, sinusoidal or traveling wave trails attributed to nematodes have been recorded in Mesozoic deposits, and it is possible (but not certain) that some of those attributed to the form genus Cochlichnus Hitchcock (Hantzschel 1975) were made by nematodes.Other possible nematode trace fossils are holes in foraminifera that resemble borings made by extant nematodes (Sliter 1971). CoprolitesEggs and other parasite stages of nematodes can occur in petrified coprolites. Care should be taken to make certain that the nematode stages recovered are not attributable to free-living, coprophagous nematodes that entered the dung after it was deposited. Human coprolites may contain a range of nematode stages, however, nematodes associated with human and animal remains during historic times are not covered here.

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Ein parasitischer Nematode in fossiler Coleopteren-Muskulatur aus der eozänen Braunkohle des Geiseltales bei Halle (Saale)

Cited by 18 publications

References 0 publications

Deciphering the preservation of fossil insects: a case study from the Crato Member, Early Cretaceous of Brazil

Deciphering the preservation of fossil insects: a case study from the Crato Member, Early Cretaceous of Brazil

Snowball structures and their slide origin in the Jebel Tekzim Limestone (Palaeozoic of the Jebilet Range, Morocco)

6. Palaeontology of nematodes

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