Bunaia

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Bunaia
Temporal range: Silurian
Bunaia woodwardi ROMIP53886.png
Fossil of Bunaia woodwardi
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Family:† Offacolidae
Genus:† Bunaia
Clarke, 1919
Type species
†Bunaia woodwardi
Clarke, 1919
Species
  • †"B". heintziStørmer, 1934
  • †B. woodwardiClarke, 1919

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]

Contents

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. 1 2 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. 1 2 Bicknell, Russell D. C.; Pates, Stephen (2020). "Pictorial Atlas of Fossil and Extant Horseshoe Crabs, With Focus on Xiphosurida". Frontiers in Earth Science. 8: 98. Bibcode:2020FrEaS...8...98B. doi: 10.3389/feart.2020.00098 . ISSN   2296-6463.
  3. 1 2 Dunlop, J. A.; Penney, D.; Jekel, D. (2020). "A summary list of fossil spiders and their relatives" (PDF). World Spider Catalog. Natural History Museum Bern. pp. 1–296.
  4. 1 2 3 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. PMC   11524597 .
  5. 1 2 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. Bibcode:1919GeoM....6..531C. doi:10.1017/s0016756800202100. S2CID   130214729.
  6. 1 2 Eldredge, Niles; Smith, LeGrande (1974). "Revision of the suborder Synziphosurina (Chelicerata, Merostomata) : with remarks on merostome phylogeny. American Museum novitates; no. 2543". hdl:2246/2745.{{cite journal}}: Cite journal requires |journal= (help)
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