Biology:Bunaia
Bunaia is a genus of synziphosurine, a paraphyletic group of fossil chelicerate arthropods.[1][2] Bunaia was tentatively placed as part of the clade Planaterga,[1][3][2] however a 2024 study found it to be within Offacolidae instead.[4] The genus contains at least one species: Bunaia woodwardi from the Silurian period in Svalbard, Norway[5][3] and the Bertie Group of Ontario [4]
Description
Initially, the species was known only from poorly preserved specimens composed of semicircular carapace, fragments of opisthosoma and disarticulated telson.[5][6] The aforementioned 2024 study described additional specimens, which revealed "a pair of elongated chelicerae in the prosoma, followed posteriorly by five pairs of biramous appendages, a first pre-abdomen somite bearing a pair of paddle-like uniramous appendages (exopods) and a ventral pretelsonic process."[4]
Taxonomy
The placement of "Bunaia" heintzi (known only by a single carapace from the Silurian period in the United States) within this genus has been questioned.[6]
References
- ↑ 1.0 1.1 Lamsdell, James C. (2013). "Revised systematics of Palaeozoic 'horseshoe crabs' and the myth of monophyletic Xiphosura". Zoological Journal of the Linnean Society 167 (1): 1–27. doi:10.1111/j.1096-3642.2012.00874.x. ISSN 0024-4082.
- ↑ 2.0 2.1 Bicknell, Russell D. C.; Pates, Stephen (2020). "Pictorial Atlas of Fossil and Extant Horseshoe Crabs, With Focus on Xiphosurida" (in en). Frontiers in Earth Science 8: 98. doi:10.3389/feart.2020.00098. ISSN 2296-6463. Bibcode: 2020FrEaS...8...98B.
- ↑ 3.0 3.1 Dunlop, J. A.; Penney, D.; Jekel, D. (2020). "A summary list of fossil spiders and their relatives". World Spider Catalog. Natural History Museum Bern. pp. 1–296. https://wsc.nmbe.ch/resources/fossils/Fossils20.5.pdf.
- ↑ 4.0 4.1 4.2 Lustri, Lorenzo; Antcliffe, Jonathan B.; Gueriau, Pierre; Daley, Allison C. (October 2024). "New specimens of Bunaia woodwardi Clarke, 1919 (Euchelicerata): a new member of Offacolidae providing insight supporting the Arachnomorpha". Royal Society Open Science 11 (10). doi:10.1098/rsos.240499.
- ↑ 5.0 5.1 Clarke, John M. (1919-12-01). "I.— Bunaia Woodwardi, a New Merostome from the Silurian Waterlimes of New York". Geological Magazine 6 (12): 531–533. doi:10.1017/s0016756800202100. Bibcode: 1919GeoM....6..531C. https://zenodo.org/record/2262345.
- ↑ 6.0 6.1 Eldredge, Niles; Smith, LeGrande (1974) (in en-US). Revision of the suborder Synziphosurina (Chelicerata, Merostomata) : with remarks on merostome phylogeny. American Museum novitates ; no. 2543. http://digitallibrary.amnh.org/handle/2246/2745.
Wikidata ☰ Q96374111 entry
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