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IRMNG taxon detailsCaveacus Landing, 1995 †
marine,
fossil only
Landing, E. (1995). Upper Placentian—Branchian series of mainland Nova Scotia (middle-upper Lower Cambrian): Faunas, paleoenvironments, and stratigraphic revision. <em>Journal of Paleontology.</em> 69(3): 475-495., available online at https://doi.org/10.1017/s0022336000034879
page(s): 493 [details]
Taxonomic remark From original description: The systematic relationships of Caveacus n. gen. are problematical, and it is not known whether...
Taxonomic remark From original description: The systematic relationships of Caveacus n. gen. are problematical, and it is not known whether the organism bore one, or a number, of the sclerites. One comparison that might be made is with such lapworthellid tommotiids as Lapworthella ludvigseni Landing, 1984, which tend to fill the internal cavity with heavy phosphate deposits; however, Caveacus n. genus sclerites lack the characteristic(?) transverse and radial microsculpture of lapworthellids and have a very shallow internal cavity. A shallow internal cavity and internal basal accretion are known in agmatans (see Yochelson, 1977), and it is possible that Caveacus n. gen. might be the first known phosphate secretor of this group. An affinity with Early Cambrian pseudoconodonts or protoconodonts s.s. is unlikely, because the internal cavity of elements of these groups extends to the tip of the element. [details]
IRMNG (2023). Caveacus Landing, 1995 †. Accessed at: https://irmng.org/aphia.php?p=taxdetails&id=1425579 on 2024-10-21
Date action by
original description
Landing, E. (1995). Upper Placentian—Branchian series of mainland Nova Scotia (middle-upper Lower Cambrian): Faunas, paleoenvironments, and stratigraphic revision. <em>Journal of Paleontology.</em> 69(3): 475-495., available online at https://doi.org/10.1017/s0022336000034879
page(s): 493 [details] basis of record Neave, S. A. and successors. (1939-2004). Nomenclator Zoologicus, vols. 1-10 online. [developed by uBio, hosted online at MBLWHOI Library]. Previously at http://ubio.org/NomenclatorZoologicus/ (URL no longer current). , available online at https://insecta.bio.spbu.ru/z/nomenclator_zoologicus_PDF.htm [details] verified source for family Landing, E. (1995). Upper Placentian—Branchian series of mainland Nova Scotia (middle-upper Lower Cambrian): Faunas, paleoenvironments, and stratigraphic revision. <em>Journal of Paleontology.</em> 69(3): 475-495., available online at https://doi.org/10.1017/s0022336000034879 [details] name verified source Neave, S. A. and successors. (1939-2004). Nomenclator Zoologicus, vols. 1-10 online. [developed by uBio, hosted online at MBLWHOI Library]. Previously at http://ubio.org/NomenclatorZoologicus/ (URL no longer current). , available online at https://insecta.bio.spbu.ru/z/nomenclator_zoologicus_PDF.htm [details] current name source Landing, E. (1995). Upper Placentian—Branchian series of mainland Nova Scotia (middle-upper Lower Cambrian): Faunas, paleoenvironments, and stratigraphic revision. <em>Journal of Paleontology.</em> 69(3): 475-495., available online at https://doi.org/10.1017/s0022336000034879 [details] extant flag source Neave, S. A. and successors. (1939-2004). Nomenclator Zoologicus, vols. 1-10 online. [developed by uBio, hosted online at MBLWHOI Library]. Previously at http://ubio.org/NomenclatorZoologicus/ (URL no longer current). , available online at https://insecta.bio.spbu.ru/z/nomenclator_zoologicus_PDF.htm [details] habitat flag source original work (title/other) [details] Unreviewed
Taxonomic remark From original description: The systematic relationships of Caveacus n. gen. are problematical, and it is not known whether the organism bore one, or a number, of the sclerites. One comparison that might be made is with such lapworthellid tommotiids as Lapworthella ludvigseni Landing, 1984, which tend to fill the internal cavity with heavy phosphate deposits; however, Caveacus n. genus sclerites lack the characteristic(?) transverse and radial microsculpture of lapworthellids and have a very shallow internal cavity. A shallow internal cavity and internal basal accretion are known in agmatans (see Yochelson, 1977), and it is possible that Caveacus n. gen. might be the first known phosphate secretor of this group. An affinity with Early Cambrian pseudoconodonts or protoconodonts s.s. is unlikely, because the internal cavity of elements of these groups extends to the tip of the element. [details]
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