Pectinida Gray 1854
Pectinida gen. et sp. indet. (Figure 10 A–B) 2011 Ostreoidean—Hammer et al., tab. 2. Material examined. Five specimens; fragmented and delaminated shells. See Appendix 1 for the list of specimens. Description. Shell thin, roughly round in shape, only weakly inflated. Right valve thin, flat, visible...
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ftzenodo:oai:zenodo.org:4929779 2023-05-15T18:29:52+02:00 Pectinida Gray 1854 Hryniewicz, Krzysztof Little, Crispin T. S. Nakrem, Hans Arne 2014-09-02 https://zenodo.org/record/4929779 https://doi.org/10.5281/zenodo.4929779 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/A2311D4D9F0CE33004E6FC8BFE9E2F60 doi:10.11646/zootaxa.3859.1.1 http://zenodo.org/record/4930112 http://publication.plazi.org/id/5E0865359F19E3250471FFA5FFA82955 doi:10.5281/zenodo.5228099 http://zoobank.org/24FCAAE1-AB7C-4FAD-8698-D0C9F12400EC doi:10.5281/zenodo.4929778 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4929779 https://doi.org/10.5281/zenodo.4929779 oai:zenodo.org:4929779 info:eu-repo/semantics/openAccess Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard, pp. 1-66 in Zootaxa 3859(1) 22 Biodiversity Taxonomy Animalia Mollusca Bivalvia Pectinida info:eu-repo/semantics/other publication-taxonomictreatment 2014 ftzenodo https://doi.org/10.5281/zenodo.492977910.11646/zootaxa.3859.1.110.5281/zenodo.522809910.5281/zenodo.4929778 2023-03-10T17:41:15Z Pectinida gen. et sp. indet. (Figure 10 A–B) 2011 Ostreoidean—Hammer et al., tab. 2. Material examined. Five specimens; fragmented and delaminated shells. See Appendix 1 for the list of specimens. Description. Shell thin, roughly round in shape, only weakly inflated. Right valve thin, flat, visible only in cross-section. Left valve thin, weakly convex and larger than right valve; irregularly shaped, no sign of attachment found. Beak weakly incurved, accompanied by a shallow ventrally directed furrow. Weak muscle scar probably represent an adductor muscle scar. Shell ornamented by weak commarginal folds. Remarks. The lack of a well demarcated external ligament, the thinness of the shells and the nature of cementation precludes our specimens belonging to the Ostreida Férrusac, 1822. Instead, the flat right valve facing the substrate and a larger covering left valve indicates that our specimens belong either to the Anomiidae Rafinesque, 1815, or the Dimyidae, Fischer, 1886 (e.g. Coan et al. 2000; Coan & Scott 2012). An anomiid origin is probably more likely because the dorsal furrow resembles the shell fusion scar characteristic for anomiids (Yonge 1977). However, the lack of well preserved right valves and adductor muscle scars means we cannot unequivocally include our specimens into either the Anomiidae and Dimyidae at present. Palaeoecology. Our species was most likely a filter-feeder attached to hard substrates. Modern anomiids are shallow water forms, attached by a byssus protruding through a foramen in the lower valve (e.g. Yonge 1977). Recent Dimyidae is a cementing group found in deep water and cryptic habitats (e.g. Waller 2012). In the Mesozoic both groups were fairly common in shallow water habitats (e.g. Fürsich & Werner 1989; Hodges 1991; Todd & Palmer 2002). Published as part of Hryniewicz, Krzysztof, Little, Crispin T. S. & Nakrem, Hans Arne, 2014, Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard, pp. 1-66 in ... Other/Unknown Material Svalbard Spitsbergen Zenodo Svalbard Todd ENVELOPE(-85.933,-85.933,-78.050,-78.050) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Mollusca Bivalvia Pectinida |
spellingShingle |
Biodiversity Taxonomy Animalia Mollusca Bivalvia Pectinida Hryniewicz, Krzysztof Little, Crispin T. S. Nakrem, Hans Arne Pectinida Gray 1854 |
topic_facet |
Biodiversity Taxonomy Animalia Mollusca Bivalvia Pectinida |
description |
Pectinida gen. et sp. indet. (Figure 10 A–B) 2011 Ostreoidean—Hammer et al., tab. 2. Material examined. Five specimens; fragmented and delaminated shells. See Appendix 1 for the list of specimens. Description. Shell thin, roughly round in shape, only weakly inflated. Right valve thin, flat, visible only in cross-section. Left valve thin, weakly convex and larger than right valve; irregularly shaped, no sign of attachment found. Beak weakly incurved, accompanied by a shallow ventrally directed furrow. Weak muscle scar probably represent an adductor muscle scar. Shell ornamented by weak commarginal folds. Remarks. The lack of a well demarcated external ligament, the thinness of the shells and the nature of cementation precludes our specimens belonging to the Ostreida Férrusac, 1822. Instead, the flat right valve facing the substrate and a larger covering left valve indicates that our specimens belong either to the Anomiidae Rafinesque, 1815, or the Dimyidae, Fischer, 1886 (e.g. Coan et al. 2000; Coan & Scott 2012). An anomiid origin is probably more likely because the dorsal furrow resembles the shell fusion scar characteristic for anomiids (Yonge 1977). However, the lack of well preserved right valves and adductor muscle scars means we cannot unequivocally include our specimens into either the Anomiidae and Dimyidae at present. Palaeoecology. Our species was most likely a filter-feeder attached to hard substrates. Modern anomiids are shallow water forms, attached by a byssus protruding through a foramen in the lower valve (e.g. Yonge 1977). Recent Dimyidae is a cementing group found in deep water and cryptic habitats (e.g. Waller 2012). In the Mesozoic both groups were fairly common in shallow water habitats (e.g. Fürsich & Werner 1989; Hodges 1991; Todd & Palmer 2002). Published as part of Hryniewicz, Krzysztof, Little, Crispin T. S. & Nakrem, Hans Arne, 2014, Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard, pp. 1-66 in ... |
format |
Other/Unknown Material |
author |
Hryniewicz, Krzysztof Little, Crispin T. S. Nakrem, Hans Arne |
author_facet |
Hryniewicz, Krzysztof Little, Crispin T. S. Nakrem, Hans Arne |
author_sort |
Hryniewicz, Krzysztof |
title |
Pectinida Gray 1854 |
title_short |
Pectinida Gray 1854 |
title_full |
Pectinida Gray 1854 |
title_fullStr |
Pectinida Gray 1854 |
title_full_unstemmed |
Pectinida Gray 1854 |
title_sort |
pectinida gray 1854 |
publishDate |
2014 |
url |
https://zenodo.org/record/4929779 https://doi.org/10.5281/zenodo.4929779 |
long_lat |
ENVELOPE(-85.933,-85.933,-78.050,-78.050) |
geographic |
Svalbard Todd |
geographic_facet |
Svalbard Todd |
genre |
Svalbard Spitsbergen |
genre_facet |
Svalbard Spitsbergen |
op_source |
Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard, pp. 1-66 in Zootaxa 3859(1) 22 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/A2311D4D9F0CE33004E6FC8BFE9E2F60 doi:10.11646/zootaxa.3859.1.1 http://zenodo.org/record/4930112 http://publication.plazi.org/id/5E0865359F19E3250471FFA5FFA82955 doi:10.5281/zenodo.5228099 http://zoobank.org/24FCAAE1-AB7C-4FAD-8698-D0C9F12400EC doi:10.5281/zenodo.4929778 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4929779 https://doi.org/10.5281/zenodo.4929779 oai:zenodo.org:4929779 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.492977910.11646/zootaxa.3859.1.110.5281/zenodo.522809910.5281/zenodo.4929778 |
_version_ |
1766213295831777280 |