A review and evaluation of homology hypotheses in echinoderm paleobiology:
The extraxial-axial theory (EAT) and universal elemental homology (UEH) are often portrayed as mutually exclusive hypotheses of homology within pentaradiate Echinodermata. EAT describes homology upon the echinoderm bauplan, interpreted through early post-metamorphic growth and growth zones, dividing...
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| Format: | Elektronisch E-Book |
| Sprache: | English |
| Veröffentlicht: |
Cambridge
Cambridge University Press
2023
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| Schriftenreihe: | Cambridge elements
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| Schlagworte: | |
| Online-Zugang: | BSB01 BTU01 FHN01 URL des Erstveröffentlichers |
| Zusammenfassung: | The extraxial-axial theory (EAT) and universal elemental homology (UEH) are often portrayed as mutually exclusive hypotheses of homology within pentaradiate Echinodermata. EAT describes homology upon the echinoderm bauplan, interpreted through early post-metamorphic growth and growth zones, dividing it into axial regions generally associated with elements of the ambulacral system and extraxial regions that are not. UEH describes the detailed construction of the axial skeleton, dividing it into homologous plates and plate series based on symmetry, early growth, and function. These hypotheses are not in conflict; the latter is rooted in refinement of the former. Some interpretive differences arise because many of the morphologies described from eleutherozoan development are difficult to reconcile with Paleozoic forms. Conversely, many elements described for Paleozoic taxa by UEH, such as the peristomial border plates, are absent in eleutherozoans. This Element recommends these two hypotheses be used together to generate a better understanding of homology across Echinodermata |
| Beschreibung: | Title from publisher's bibliographic system (viewed on 24 Mar 2023) |
| Beschreibung: | 1 Online-Ressource (44 Seiten) |
| ISBN: | 9781009397155 |
| DOI: | 10.1017/9781009397155 |
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| dewey-ones | 563 - Fossil marine & seashore invertebrates |
| dewey-raw | 563/.9 |
| dewey-search | 563/.9 |
| dewey-sort | 3563 19 |
| dewey-tens | 560 - Paleontology |
| discipline | Geologie / Paläontologie |
| discipline_str_mv | Geologie / Paläontologie |
| doi_str_mv | 10.1017/9781009397155 |
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| index_date | 2024-07-03T21:57:47Z |
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| isbn | 9781009397155 |
| language | English |
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| spelling | Sumrall, Colin D. 1967- (DE-588)1288740549 aut A review and evaluation of homology hypotheses in echinoderm paleobiology Colin D. Sumrall [und vier andere] Cambridge Cambridge University Press 2023 1 Online-Ressource (44 Seiten) txt rdacontent c rdamedia cr rdacarrier Cambridge elements Title from publisher's bibliographic system (viewed on 24 Mar 2023) The extraxial-axial theory (EAT) and universal elemental homology (UEH) are often portrayed as mutually exclusive hypotheses of homology within pentaradiate Echinodermata. EAT describes homology upon the echinoderm bauplan, interpreted through early post-metamorphic growth and growth zones, dividing it into axial regions generally associated with elements of the ambulacral system and extraxial regions that are not. UEH describes the detailed construction of the axial skeleton, dividing it into homologous plates and plate series based on symmetry, early growth, and function. These hypotheses are not in conflict; the latter is rooted in refinement of the former. Some interpretive differences arise because many of the morphologies described from eleutherozoan development are difficult to reconcile with Paleozoic forms. Conversely, many elements described for Paleozoic taxa by UEH, such as the peristomial border plates, are absent in eleutherozoans. This Element recommends these two hypotheses be used together to generate a better understanding of homology across Echinodermata Echinodermata, Fossil Echinodermata / Evolution Evolutionary paleobiology Paleobiology / Methodology Erscheint auch als Druck-Ausgabe 978-1-00-939717-9 https://doi.org/10.1017/9781009397155 Verlag URL des Erstveröffentlichers Volltext |
| spellingShingle | Sumrall, Colin D. 1967- A review and evaluation of homology hypotheses in echinoderm paleobiology Echinodermata, Fossil Echinodermata / Evolution Evolutionary paleobiology Paleobiology / Methodology |
| title | A review and evaluation of homology hypotheses in echinoderm paleobiology |
| title_auth | A review and evaluation of homology hypotheses in echinoderm paleobiology |
| title_exact_search | A review and evaluation of homology hypotheses in echinoderm paleobiology |
| title_exact_search_txtP | A review and evaluation of homology hypotheses in echinoderm paleobiology |
| title_full | A review and evaluation of homology hypotheses in echinoderm paleobiology Colin D. Sumrall [und vier andere] |
| title_fullStr | A review and evaluation of homology hypotheses in echinoderm paleobiology Colin D. Sumrall [und vier andere] |
| title_full_unstemmed | A review and evaluation of homology hypotheses in echinoderm paleobiology Colin D. Sumrall [und vier andere] |
| title_short | A review and evaluation of homology hypotheses in echinoderm paleobiology |
| title_sort | a review and evaluation of homology hypotheses in echinoderm paleobiology |
| topic | Echinodermata, Fossil Echinodermata / Evolution Evolutionary paleobiology Paleobiology / Methodology |
| topic_facet | Echinodermata, Fossil Echinodermata / Evolution Evolutionary paleobiology Paleobiology / Methodology |
| url | https://doi.org/10.1017/9781009397155 |
| work_keys_str_mv | AT sumrallcolind areviewandevaluationofhomologyhypothesesinechinodermpaleobiology |