Wiwaxia

*Wiwaxia*
Periode Kambrium–Ordovisium (?), 520–505 jtyl^[1]

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Wiwaxia ; Periode Kambrium–Ordovisium (?), 520–505 jtyl PreЄ Є O S D C P T J K Pg N
	; Rekonstruksi Wiwaxia corrugata
	Fosil menunjukkan bagian bawah Wiwaxia corrugata dari Burgess Shale. From Smith (2014)autoritat=Walcott, 1911
Taksonomi
Kerajaan	Animalia
Famili	Wiwaxiidae
Genus	Wiwaxia ; C.Walcott, 1911
Spesies
	W. corrugata (Matthew, 1899) (type) ; W. foliosa Yang et al., 2014 ; W. papilio Zhang, Smith & Shu, 2015 ; W. taijiangensis Zhao, Qian & Lee, 1994 ; W. sp. See Butterfield 1994, Smith 2014, Smith, Hughes et al., 2015;
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Wiwaxia adalah genus hewan bertubuh lunak yang tertutupi sisik karbon dan duri yang melindunginya dari pemangsa. Fosil Wiwaxia – terutama sisik terisolasi, tetapi kadang-kadang fosil lengkap, terartikulasi – diketahui dari deposit Kambrium awal dan Kambrium tengah di seluruh dunia.^[4]^[5]^[6] Hewan yang hidup memiliki panjang dari 5 cm (2 inci) ketika dewasa, meskipun beberapa spesimen remaja diketahui, yang terkecil berukuran sepanjang 2 milimeter (0.079 inci).^[6]

Afinitas Wiwaxia telah menjadi bahan perdebatan: Para peneliti telah lama terbelah antara dua kemungkinan. Di satu sisi, barisan sisik tampak sekilas mirip dengan annelida; sebaliknya, bagian mulutnya dan morfologi umum menunjukkan adanya hubungan dengan moluska tanpa cangkang. Baru-baru ini, bukti afinitas moluska telah terakumulasi, berdasarkan detail baru dari bagian mulut, cangkang, dan sejarah Wiwaxia.^[6]^[7]

Klad Halwaxiida yang diusulkan mengandung Wiwaxia serta beberapa hewan Kambrium serupa.

Lihat juga sunting

Coeloscleritophora

Referensi sunting

^ Kimmig, Julien; Couto, Helena; Leibach, Wade W.; Lieberman, Bruce S. (25 May 2019). "Soft-bodied fossils from the upper Valongo Formation (Middle Ordovician: Dapingian-Darriwilian) of northern Portugal". The Science of Nature. 106 (5–6): 27. Bibcode:2019SciNa.106...27K. doi:10.1007/s00114-019-1623-z. PMID 31129730.
^ Yang, J.; Smith, M.R.; Lan, T.; Hou, J.B.; Zhang, X.G. (2014). "Articulated Wiwaxia from the Cambrian stage 3 Xiaoshiba lagerstätte". Scientific Reports. 4: 4643. Bibcode:2014NatSR...4E4643Y. doi:10.1038/srep04643. PMC 3982170  . PMID 24717918.
^ Zhang, Zhifei; Smith, Martin R.; Shu, Degan (2015). "New reconstruction of the Wiwaxia scleritome, with data from Chengjiang juveniles". Scientific Reports. 5: 14810. Bibcode:2015NatSR...514810Z. doi:10.1038/srep14810. PMC 4595806  . PMID 26443243.
^ ^a ^b Zhao, Y.L.; Qian, Y.; Li, X.S. (1994). "Wiwaxia from Early-Middle Cambrian Kaili Formation in Taijiang, Guizhou". Acta Palaeontologica Sinica. 33 (3): 359–366.
^ Conway Morris, S. (1985). "The Middle Cambrian metazoan Wiwaxia corrugata (Matthew) from the Burgess Shale and Ogygopsis Shale, British Columbia, Canada". Philosophical Transactions of the Royal Society of London B. 307 (1134): 507–582. Bibcode:1985RSPTB.307..507M. doi:10.1098/rstb.1985.0005. JSTOR 2396338.
^ ^a ^b ^c Smith, M.R. (2014). "Ontogeny, morphology and taxonomy of the soft-bodied Cambrian 'mollusc' Wiwaxia". Palaeontology. 57 (1): 215–229. doi:10.1111/pala.12063.
^ Smith, M.R. (2012). "Mouthparts of the Burgess Shale fossils Odontogriphus and Wiwaxia: Implications for the ancestral molluscan radula". Proceedings of the Royal Society B. 279 (1745): 4287–4295. doi:10.1098/rspb.2012.1577. PMC 3441091  . PMID 22915671.

Pranala luar sunting

"Wiwaxia corrugata" Diarsipkan 2021-06-24 di Wayback Machine.. Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011.
"Orthrozanclus reburrus". Pharyngula (blog). 2007-03-02. ^{[pranala nonaktif permanen]}

Artikel bertopik hewan ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya.

[Kimming-etal-2019-1] Kimmig, Julien; Couto, Helena; Leibach, Wade W.; Lieberman, Bruce S. (25 May 2019). "Soft-bodied fossils from the upper Valongo Formation (Middle Ordovician: Dapingian-Darriwilian) of northern Portugal". The Science of Nature. 106 (5–6): 27. Bibcode:2019SciNa.106...27K. doi:10.1007/s00114-019-1623-z. PMID 31129730.

[Yang-etal-2014-2] Yang, J.; Smith, M.R.; Lan, T.; Hou, J.B.; Zhang, X.G. (2014). "Articulated Wiwaxia from the Cambrian stage 3 Xiaoshiba lagerstätte". Scientific Reports. 4: 4643. Bibcode:2014NatSR...4E4643Y. doi:10.1038/srep04643. PMC 3982170  . PMID 24717918.

[Zhang-Smith-Shu-2015-3] Zhang, Zhifei; Smith, Martin R.; Shu, Degan (2015). "New reconstruction of the Wiwaxia scleritome, with data from Chengjiang juveniles". Scientific Reports. 5: 14810. Bibcode:2015NatSR...514810Z. doi:10.1038/srep14810. PMC 4595806  . PMID 26443243.

[Zhao1994-4] Zhao, Y.L.; Qian, Y.; Li, X.S. (1994). "Wiwaxia from Early-Middle Cambrian Kaili Formation in Taijiang, Guizhou". Acta Palaeontologica Sinica. 33 (3): 359–366.

[ConwayMorris19852-5] Conway Morris, S. (1985). "The Middle Cambrian metazoan Wiwaxia corrugata (Matthew) from the Burgess Shale and Ogygopsis Shale, British Columbia, Canada". Philosophical Transactions of the Royal Society of London B. 307 (1134): 507–582. Bibcode:1985RSPTB.307..507M. doi:10.1098/rstb.1985.0005. JSTOR 2396338.

[Smith20142-6] Smith, M.R. (2014). "Ontogeny, morphology and taxonomy of the soft-bodied Cambrian 'mollusc' Wiwaxia". Palaeontology. 57 (1): 215–229. doi:10.1111/pala.12063.

[Smith20122-7] Smith, M.R. (2012). "Mouthparts of the Burgess Shale fossils Odontogriphus and Wiwaxia: Implications for the ancestral molluscan radula". Proceedings of the Royal Society B. 279 (1745): 4287–4295. doi:10.1098/rspb.2012.1577. PMC 3441091  . PMID 22915671.

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Wiwaxia Periode Kambrium–Ordovisium (?), 520–505 jtyl^[1] PreЄ Є O S D C P T J K Pg N
Rekonstruksi Wiwaxia corrugata
Fosil menunjukkan bagian bawah Wiwaxia corrugata dari Burgess Shale. From Smith (2014)autoritat=Walcott, 1911
Taksonomi

Kerajaan	Animalia
Famili	Wiwaxiidae
Genus	Wiwaxia C.Walcott, 1911


Spesies
W. corrugata (Matthew, 1899) (type) W. foliosa Yang et al., 2014^[2] W. papilio Zhang, Smith & Shu, 2015^[3] W. taijiangensis Zhao, Qian & Lee, 1994^[4] W. sp. See Butterfield 1994, Smith 2014, Smith, Hughes et al., 2015
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