Life cycle and morphology of a cambrian stem-lineage loriciferan.

Cycloneuralians form a rich and diverse element within Cambrian assemblages of exceptionally preserved fossils. Most resemble priapulid worms whereas other Cycloneuralia (Nematoda, Nematomorpha, Kinorhyncha, Loricifera), well known at the present day, have little or no fossil record. First reports o...

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Autores principales:	John S Peel, Martin Stein, Reinhardt Møbjerg Kristensen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/86e0095b81d44349af715503ad91b609
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spelling	oai:doaj.org-article:86e0095b81d44349af715503ad91b6092021-11-18T09:00:21ZLife cycle and morphology of a cambrian stem-lineage loriciferan.1932-620310.1371/journal.pone.0073583https://doaj.org/article/86e0095b81d44349af715503ad91b6092013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23991198/?tool=EBIhttps://doaj.org/toc/1932-6203Cycloneuralians form a rich and diverse element within Cambrian assemblages of exceptionally preserved fossils. Most resemble priapulid worms whereas other Cycloneuralia (Nematoda, Nematomorpha, Kinorhyncha, Loricifera), well known at the present day, have little or no fossil record. First reports of Sirilorica Peel, 2010 from the lower Cambrian Sirius Passet fauna of North Greenland described a tubular lorica covering the abdomen and part of a well developed introvert with a circlet of 6 grasping denticles near the lorica. The introvert is now known to terminate in a narrow mouth tube, while a conical anal field is also developed. Broad muscular bands between the plates in the lorica indicate that it was capable of movement by rhythmic expansion and contraction of the lorica. Sirilorica is regarded as a macrobenthic member of the stem-lineage of the miniaturised, interstitial, present day Loricifera. Like loriciferans, Sirilorica is now known to have grown by moulting. Evidence of the life cycle of Sirilorica is described, including a large post-larval stage and probably an initial larva similar to that of the middle Cambrian fossil Orstenoloricusshergoldii.John S PeelMartin SteinReinhardt Møbjerg KristensenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 8, p e73583 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q John S Peel Martin Stein Reinhardt Møbjerg Kristensen Life cycle and morphology of a cambrian stem-lineage loriciferan.
description	Cycloneuralians form a rich and diverse element within Cambrian assemblages of exceptionally preserved fossils. Most resemble priapulid worms whereas other Cycloneuralia (Nematoda, Nematomorpha, Kinorhyncha, Loricifera), well known at the present day, have little or no fossil record. First reports of Sirilorica Peel, 2010 from the lower Cambrian Sirius Passet fauna of North Greenland described a tubular lorica covering the abdomen and part of a well developed introvert with a circlet of 6 grasping denticles near the lorica. The introvert is now known to terminate in a narrow mouth tube, while a conical anal field is also developed. Broad muscular bands between the plates in the lorica indicate that it was capable of movement by rhythmic expansion and contraction of the lorica. Sirilorica is regarded as a macrobenthic member of the stem-lineage of the miniaturised, interstitial, present day Loricifera. Like loriciferans, Sirilorica is now known to have grown by moulting. Evidence of the life cycle of Sirilorica is described, including a large post-larval stage and probably an initial larva similar to that of the middle Cambrian fossil Orstenoloricusshergoldii.
format	article
author	John S Peel Martin Stein Reinhardt Møbjerg Kristensen
author_facet	John S Peel Martin Stein Reinhardt Møbjerg Kristensen
author_sort	John S Peel
title	Life cycle and morphology of a cambrian stem-lineage loriciferan.
title_short	Life cycle and morphology of a cambrian stem-lineage loriciferan.
title_full	Life cycle and morphology of a cambrian stem-lineage loriciferan.
title_fullStr	Life cycle and morphology of a cambrian stem-lineage loriciferan.
title_full_unstemmed	Life cycle and morphology of a cambrian stem-lineage loriciferan.
title_sort	life cycle and morphology of a cambrian stem-lineage loriciferan.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/86e0095b81d44349af715503ad91b609
work_keys_str_mv	AT johnspeel lifecycleandmorphologyofacambrianstemlineageloriciferan AT martinstein lifecycleandmorphologyofacambrianstemlineageloriciferan AT reinhardtmøbjergkristensen lifecycleandmorphologyofacambrianstemlineageloriciferan
_version_	1718421032868511744

Life cycle and morphology of a cambrian stem-lineage loriciferan.

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