Devonian Paleoenvironments of Ohio by Rituparna Bose

By Rituparna Bose

Carbonate depositional platforms within the Paleozoic geologic time signify fewer reviews in paleoecological interactions than the siliciclastic platforms. to judge this distinction, the paleontology of the center Devonian Dundee Formation in Ohio has been explored. This geologic formation represents an immense atmosphere within the Michigan Basin of North the United States. knowing biotic relationships corresponding to mutualism, commensalism, parasitism and predation in an ecological group is necessary in unraveling the secret of the fossil checklist. This learn has contributed a wide box assortment for you to be priceless in documenting the fossil content material of this unit for destiny employees.

Rituparna Bose used new microscopic and imaging concepts in qualitatively reading the biotic interactions in small invertebrate shells. extra importantly, she solved complicated hypotheses in newly rising difficulties within the box of geology and paleontology, equivalent to the biodiversity drawback. Her learn concerned exploring the Devonian geology and paleontology of a geologic formation of a brand new unexplored quarry in Ohio, particularly the Whitehouse Quarry in Lucas County, Ohio. She pointed out Devonian brachiopods to the genus point according to their morphology, and clinically determined paleoecological entities on host brachiopods and extra measured episkeletobiont strains on hosts to appreciate the results of atmosphere and evolution on extinct species.

Such reports have implications in predicting destiny biodiversity, surroundings conservation and weather swap. This study also will help destiny staff to check the ecology of brachiopod hosts of the Dundee Limestone with that of alternative Devonian brachiopods, from either carbonate and siliciclastic settings.

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Treatise on Invertebrate Paleontology, part H, Brachiopoda (revised) (Kaesler RL, ed). Geological Society of America and The University of Kansas, Boulder, Colorado and Lawrence, Kansas, 539 p Rowell AJ, Grant RE (1987) Phylum Brachiopoda, pp 463–488. In: Boardman RC, Cheetham AH, Rowell AI (eds) Fossil invertebrates. Blackwell Science, Cambridge, p 713 48 5 Results: Paleontological Analysis Clarkson ENK (1986) Invertebrate paleontology and evolution, 2nd edn. Allen and Unwin, London 382 p Cameron B (1969) Paleozoic shell boring annelids and their trace fossils.

Many Rhipidomella shells were recrystallized and some shells had punctae filled with pyrite crystals (Figs. 9). Some Rhipidomella hosts show evidence of mechanical breakage (abrasion and fragmentation) (Figs. 26a–b). Many Rhipidomella shells provide evidence for mechanical post-burial damage (compaction) (Figs. 27b). Only one valve of each shell was available for study, as these were more or less partially embedded in the rock. It was difficult to determine which valve was preserved, the ventral or the dorsal, as two valves were not exposed for study.

The present study of the Dundee Formation has clearly shown that strophodonts and spiriferids show no evidence of encrustation. Instead, a few Rhipidomella shells show some evidence of different types of biological activities. These Rhipidomella shells show evidence of branching grooves, scars, sheet-like encrustation, and large borehole openings. The results of this study clearly demonstrate that only this type of brachiopod was encrusted, mainly by soft bryozoans, and there is rare evidence of skeletal organisms attaching to the hard substrates in this carbonate unit.

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