The Mode of Life in the Genus <i>Pholadomya</i> as Inferred from the Fossil Record
The paper is an attempt to reconstruct the mode of life of <i>Pholadomya</i> bivalves, very common in the fossil record, particularly that of the Jurassic. The only extant representative of the genus is extremely rare and very poorly known. Materials from the Polish Jurassic deposits (Ba...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/10/10/397 |
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| author | Przemysław Sztajner |
| author_facet | Przemysław Sztajner |
| author_sort | Przemysław Sztajner |
| collection | DOAJ |
| description | The paper is an attempt to reconstruct the mode of life of <i>Pholadomya</i> bivalves, very common in the fossil record, particularly that of the Jurassic. The only extant representative of the genus is extremely rare and very poorly known. Materials from the Polish Jurassic deposits (Bajocian–Kimmeridgian; Western Pomerania and Polish Jura) and literature data were used for the reconstruction. Specifically, observations on the anatomy, taphonomy, and diagenesis of the specimens examined as well as lithology of the deposits housing the specimens were used. Shell anatomy characteristics are known for their particular utility in mode of life reconstructions, although the extremely thin-shelled and coarsely sculpted bivalves, such as the <i>Pholadomya</i> examined, have not been studied so far. The reconstruction suggest a diversity of the mode of life, coincident with the morphological differences between the <i>Pholadomya</i> species. At least the adults of anteriorly flattened species are inferred to have lived extremely deeply buried in the sediment, and were hardly mobile. The smaller, more oval in shape, species were more mobile, and some of them are thought to have preferred life in shelters, should those be available. In addition, the function of the cruciform muscle, other than that considered so far, is suggested. |
| first_indexed | 2024-03-10T15:50:25Z |
| format | Article |
| id | doaj.art-2621f5bafcbc4b82adafe1d3a2310e76 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-10T15:50:25Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-2621f5bafcbc4b82adafe1d3a2310e762023-11-20T16:05:02ZengMDPI AGGeosciences2076-32632020-10-01101039710.3390/geosciences10100397The Mode of Life in the Genus <i>Pholadomya</i> as Inferred from the Fossil RecordPrzemysław Sztajner0Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16A, 70-383 Szczecin, PolandThe paper is an attempt to reconstruct the mode of life of <i>Pholadomya</i> bivalves, very common in the fossil record, particularly that of the Jurassic. The only extant representative of the genus is extremely rare and very poorly known. Materials from the Polish Jurassic deposits (Bajocian–Kimmeridgian; Western Pomerania and Polish Jura) and literature data were used for the reconstruction. Specifically, observations on the anatomy, taphonomy, and diagenesis of the specimens examined as well as lithology of the deposits housing the specimens were used. Shell anatomy characteristics are known for their particular utility in mode of life reconstructions, although the extremely thin-shelled and coarsely sculpted bivalves, such as the <i>Pholadomya</i> examined, have not been studied so far. The reconstruction suggest a diversity of the mode of life, coincident with the morphological differences between the <i>Pholadomya</i> species. At least the adults of anteriorly flattened species are inferred to have lived extremely deeply buried in the sediment, and were hardly mobile. The smaller, more oval in shape, species were more mobile, and some of them are thought to have preferred life in shelters, should those be available. In addition, the function of the cruciform muscle, other than that considered so far, is suggested.https://www.mdpi.com/2076-3263/10/10/397<i>Pholadomya</i>AnomalodesmataBivalvialife habitdeep burrowerstaphonomy |
| spellingShingle | Przemysław Sztajner The Mode of Life in the Genus <i>Pholadomya</i> as Inferred from the Fossil Record Geosciences <i>Pholadomya</i> Anomalodesmata Bivalvia life habit deep burrowers taphonomy |
| title | The Mode of Life in the Genus <i>Pholadomya</i> as Inferred from the Fossil Record |
| title_full | The Mode of Life in the Genus <i>Pholadomya</i> as Inferred from the Fossil Record |
| title_fullStr | The Mode of Life in the Genus <i>Pholadomya</i> as Inferred from the Fossil Record |
| title_full_unstemmed | The Mode of Life in the Genus <i>Pholadomya</i> as Inferred from the Fossil Record |
| title_short | The Mode of Life in the Genus <i>Pholadomya</i> as Inferred from the Fossil Record |
| title_sort | mode of life in the genus i pholadomya i as inferred from the fossil record |
| topic | <i>Pholadomya</i> Anomalodesmata Bivalvia life habit deep burrowers taphonomy |
| url | https://www.mdpi.com/2076-3263/10/10/397 |
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