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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universitat de Barcelona
2003
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| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=50510403 |
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- Traces within traces: holes, pits and galleries in walls and fillings of insect trace fossils in paleosols Radek Mikulas Jorge F. Genise Ciencias de la Tierra Pits Holes Galleries Ichnotaxonomy Composite specimens Fossil insect nests with constructed walls (ichnogenera Uruguay ROSELLI 1938, Palmiraichnus ROSELLI 1987,Rosellichnus GENISE and BOWN 1996), as well as fossil brood masses from dung beetles (Monesichnus ROSELLI1987) often display pits or galleries made by inquilines, parasitoids, cleptoparasites and scavengers, whichdevelop and/or feed inside them. Some of these traces within traces can be distinguished, using morphologiccriteria, as separate ichnotaxa. Tombownichnus n. igen. is represented by circular to subcircular holes or paraboloidexternal pits occurring in discrete walls of chambers made of agglutinated soil material. T. plenus n. isp.consists of a complete perforation, mostly cylindrical in longitudinal section, which pierces whole thickness ofthe cell wall. Tombownichnus parabolicus n. isp. includes incomplete perforations, i.e. pits, parabolic, conic orsubcylindrical in longitudinal section, on the external surface of the chamber wall. Lazaichnus fistulosus n.igen., n. isp. is composed of circular to subcircular holes occurring in constructed walls of chambers made ofagglutinated soil material, which are connected to an internal gallery in their infillings. The trace fossilsdescribed herein may be the first formal records of this hitherto neglected but promising field of ichnologicresearch. 2003 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50510403 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.4 Vol.1