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Leptomitus Temporal range: Middle Cambrian PreꞒ Ꞓ O S D C P T J K Pg N
Fossil specimen (IVPP I0251) of L. teretiusculus, Paleozoological Museum of China
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Porifera
Class:	Demospongiae
Order:	†Protomonaxonida
Family:	†Leptomitidae
Genus:	†Leptomitus Walcott, 1886
Type species
Leptomitus zitteli Walcott, 1886
Species
L. conicus García-Bellido et al., 2007 L. lineatus (Walcott, 1920) Rigby & Collins, 2004 L. metta Rigby, 1983 L. teretiusculus Chen, Hou & Lu, 1989 L. undulatus Rigby & Collins, 2004 L. zitteli Walcott, 1886
Synonyms
†Tuponia Walcott, 1920

Leptomitus is a genus of demosponge known from the Middle Cambrian Burgess Shale. Its name is derived from the Greek lept ("slender") and mitos ("thread"), referring to the overall shape of the sponge. 138 specimens of Leptomitus are known from the Greater Phyllopod bed, where they comprise 0.26% of the community.

References

1. Botting, J. (2007). "'Cambrian' demosponges in the Ordovician of Morocco: Insights into the early evolutionary history of sponges". Geobios. 40 (6): 737–748. Bibcode:2007Geobi..40..737B. doi:10.1016/j.geobios.2007.02.006.
2. Charles Doolittle Walcott (1886). Second contribution to the studies on the Cambrian faunas of North America. Vol. 30 of Geological Survey bulletin. Govt. Print. Off. pp. 1–369.
3. Walcott, C. D. (1920). "Cambrian geology and paleontology IV:6—Middle Cambrian Spongiae". Smithsonian Miscellaneous Collections. 67: 261–364.
4. García-Bellido, D. C.; Gozalo, R.; Chirivella Martorell, J. B.; Liñán, E. (2007). "The Demosponge Genus Leptomitus and a New Species From the Middle Cambrian of Spain". Palaeontology. 50 (2): 467. Bibcode:2007Palgy..50..467G. doi:10.1111/j.1475-4983.2007.00635.x.
5. Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. Bibcode:2006Palai..21..451C. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022. S2CID 53646959.

External links

• "Leptomitus lineatus". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011. Archived from the original on 2020-11-12.

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• Burgess Shale fossils
• Protomonaxonida
• Prehistoric sponge genera
• Burgess Shale sponges
• Cambrian genus extinctions
• Cambrian animal stubs
• Demospongiae stubs
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