Biology:Balizoma
| Balizoma Temporal range: Silurian
| |
|---|---|
_of_the_encrinurine_trilobite_Balizoma_variolaris.jpg)
| |
| Balizoma variolaris fossil; neotype of the type species | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | |
| Family: | |
| Genus: | Balizoma
|
| Species | |
| |
Balizoma is a genus of trilobites from the family Encrinuridae established by David J. Holloway in 1980.[1] It has only been found in rocks of Silurian age. Its type species, B. variolaris (Brongniart, 1822), is currently the only named species of the genus, and is found in England . The neotype of B. variolaris was collected from the Much Wenlock Limestone Formation at Dudley, West Midlands.[2] That specimen was first illustrated in Sir Roderick Impey Murchison's classic book, The Silurian System.[3] B. variolaris was the original "strawberry-headed" trilobite of Dudley, so-named because of its nodular glabellar tubercles, and well known to early trilobite collectors.[4] Additional species were originally assigned to Balizoma, but were subsequently placed in other encrinurine genera.[5][6]
References
- ↑ Holloway, David J. (1980). "Middle Silurian trilobites from Arkansas and Oklahoma, U.S.A.". Palaeontographica Abteilung A 170: 1–85. https://www.schweizerbart.de/papers/pala/detail/A170/71018/Middle_Silurian_trilobites_from_Arkansas_and_Oklahoma_USA_Part_1.
- ↑ Tripp, R. P.; Temple, J.T.; Gass, K.C. (1977). "The Silurian trilobite Encrinurus variolaris and allied species, with notes on Frammia". Palaeontology 20 (4): 847–867. https://www.researchgate.net/publication/301584640.
- ↑ Murchison, Roderick Impey (1839). The Silurian System. London: John Murray. pp. 726. https://library.si.edu/digital-library/book/siluriansystemfimurc.
- ↑ Tripp, R. P.; Temple, J.T.; Gass, K.C. (1977). "Calymene variolaris Brongniart, 1822 (Trilobita): Proposed use of the plenary powers to designate a neotype in harmony with current use. Z.N.(S.) 2189". Bulletin of Zoological Nomenclature 33 (3&4): 250–252. https://www.palass.org/sites/default/files/media/publications/palaeontology/volume_20/vol20_part4_pp847-867.pdf.
- ↑ Ramskold, Lars (1986). "Silurian encrinurid trilobites from Gotland and Dalarna, Sweden". Palaeontology 29 (3): 527–575. https://www.palass.org/sites/default/files/media/publications/palaeontology/volume_29/vol29_part3_pp527-575.pdf.
- ↑ Edgecombe, Gregory D.; Chatterton, Brian D. E. (1993). "Silurian (Wenlock-Ludlow) encrinurine trilobites from the Mackenzie Mountains, Canada, and related species". Palaeontographica Abteilung A 229: 75–112. https://www.researchgate.net/publication/271695841.
External links
- [1] Balizoma in the Paleobiology Database
- [2] Listing of Balizoma variolaris neotype in Online Collections at University of Birmingham registry.
- [3] Listing in Official Lists and Indexes of Names and Works in Zoology, 1987 (page 307)]
- [4] Listing in Official Lists and Indexes of Names and Works in Zoology, Supplement 1986-2000 (page 131)
Wikidata ☰ Q919479 entry
 |  |
