What does Ophiomorpha irregulaire really look like?
Ophiomorpha irregulaire is a surprisingly poorly characterised ichnotaxon given its common occurrence in hydrocarbon reservoir facies. Current debate surrounds the ichnotaxobases suitable for ichnospecific-level identification and also the palaeogeographic distribution of the taxon. O. irregulaire i...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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ftunivhullir:oai:hull-repository.worktribe.com:1299031 2024-09-15T18:20:13+00:00 What does Ophiomorpha irregulaire really look like? Leaman, M. McIlroy, D. Herringshaw, L.G. Boyd, C. Callow, R.H.T. 2015-02-04 https://hull-repository.worktribe.com/output/1299031 https://doi.org/10.1016/j.palaeo.2015.01.022 English eng Elsevier https://hull-repository.worktribe.com/output/1299031 Palaeogeography, Palaeoclimatology, Palaeoecology Volume 439 Pagination 38-49 doi:https://doi.org/10.1016/j.palaeo.2015.01.022 0031-0182 doi:10.1016/j.palaeo.2015.01.022 Earth-Surface Processes Palaeontology Ecology Evolution Behavior and Systematics Oceanography Journal Article 2015 ftunivhullir https://doi.org/10.1016/j.palaeo.2015.01.022 2024-07-22T14:05:21Z Ophiomorpha irregulaire is a surprisingly poorly characterised ichnotaxon given its common occurrence in hydrocarbon reservoir facies. Current debate surrounds the ichnotaxobases suitable for ichnospecific-level identification and also the palaeogeographic distribution of the taxon. O. irregulaire is conventionally characterised in core by the presence of “spikey”, fine-grained, wall-lining pellets, since the horizontal “meander maze” that is also part of the ichnospecific diagnosis cannot normally be demonstrated. To resolve ichnotaxonomic issues concerning the validity of pellet morphology as a primary ichnotaxobase, material from the type locality is re-described (Cretaceous Book Cliffs, Utah), with an emphasis on burrow wall morphology. Comparative neoichnological studies using the callianassid crustacean Neotrypaea californiensis were additionally conducted to understand the behaviour of modern taxa that produce burrows closely resembling O. irregulaire. High-resolution, three-dimensional morphological models were created from specimens of Ophiomorpha from the type locality of O. irregulaire in Utah, USA, and from Eocene deep marine turbidites of the Juncal Formation, California. Comparison of the morphological features from these two localities, as well as specimens observed in core from offshore Newfoundland, demonstrate conclusively that O. irregulaire is not restricted to the Cretaceous Western Interior Seaway. O. irregulaire may have a stratigraphic range from Jurassic to Recent, and occur in palaeoenvironmental settings ranging from shallow marine to continental slope settings. The flame-like pellet morphology is considered characteristic of the type material, and is a valid criterion for identifying O. irregulaire in core. Article in Journal/Newspaper Newfoundland University of Hull: Repository@Hull Palaeogeography, Palaeoclimatology, Palaeoecology 439 38 49 |
institution |
Open Polar |
collection |
University of Hull: Repository@Hull |
op_collection_id |
ftunivhullir |
language |
English |
topic |
Earth-Surface Processes Palaeontology Ecology Evolution Behavior and Systematics Oceanography |
spellingShingle |
Earth-Surface Processes Palaeontology Ecology Evolution Behavior and Systematics Oceanography Leaman, M. McIlroy, D. Herringshaw, L.G. Boyd, C. Callow, R.H.T. What does Ophiomorpha irregulaire really look like? |
topic_facet |
Earth-Surface Processes Palaeontology Ecology Evolution Behavior and Systematics Oceanography |
description |
Ophiomorpha irregulaire is a surprisingly poorly characterised ichnotaxon given its common occurrence in hydrocarbon reservoir facies. Current debate surrounds the ichnotaxobases suitable for ichnospecific-level identification and also the palaeogeographic distribution of the taxon. O. irregulaire is conventionally characterised in core by the presence of “spikey”, fine-grained, wall-lining pellets, since the horizontal “meander maze” that is also part of the ichnospecific diagnosis cannot normally be demonstrated. To resolve ichnotaxonomic issues concerning the validity of pellet morphology as a primary ichnotaxobase, material from the type locality is re-described (Cretaceous Book Cliffs, Utah), with an emphasis on burrow wall morphology. Comparative neoichnological studies using the callianassid crustacean Neotrypaea californiensis were additionally conducted to understand the behaviour of modern taxa that produce burrows closely resembling O. irregulaire. High-resolution, three-dimensional morphological models were created from specimens of Ophiomorpha from the type locality of O. irregulaire in Utah, USA, and from Eocene deep marine turbidites of the Juncal Formation, California. Comparison of the morphological features from these two localities, as well as specimens observed in core from offshore Newfoundland, demonstrate conclusively that O. irregulaire is not restricted to the Cretaceous Western Interior Seaway. O. irregulaire may have a stratigraphic range from Jurassic to Recent, and occur in palaeoenvironmental settings ranging from shallow marine to continental slope settings. The flame-like pellet morphology is considered characteristic of the type material, and is a valid criterion for identifying O. irregulaire in core. |
format |
Article in Journal/Newspaper |
author |
Leaman, M. McIlroy, D. Herringshaw, L.G. Boyd, C. Callow, R.H.T. |
author_facet |
Leaman, M. McIlroy, D. Herringshaw, L.G. Boyd, C. Callow, R.H.T. |
author_sort |
Leaman, M. |
title |
What does Ophiomorpha irregulaire really look like? |
title_short |
What does Ophiomorpha irregulaire really look like? |
title_full |
What does Ophiomorpha irregulaire really look like? |
title_fullStr |
What does Ophiomorpha irregulaire really look like? |
title_full_unstemmed |
What does Ophiomorpha irregulaire really look like? |
title_sort |
what does ophiomorpha irregulaire really look like? |
publisher |
Elsevier |
publishDate |
2015 |
url |
https://hull-repository.worktribe.com/output/1299031 https://doi.org/10.1016/j.palaeo.2015.01.022 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
https://hull-repository.worktribe.com/output/1299031 Palaeogeography, Palaeoclimatology, Palaeoecology Volume 439 Pagination 38-49 doi:https://doi.org/10.1016/j.palaeo.2015.01.022 0031-0182 doi:10.1016/j.palaeo.2015.01.022 |
op_doi |
https://doi.org/10.1016/j.palaeo.2015.01.022 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
439 |
container_start_page |
38 |
op_container_end_page |
49 |
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1810458588406087680 |