Iredalea Explained

Iredalea is a small genus of sea snails, marine gastropod mollusks in the family Drilliidae.^[1]

This genus was named in 1915 by Walter Oliver after Tom Iredale (1880–1972), an English-born naturalist who lived mainly in Australia.^[2]

Fossil species have been found in Pliocene strata of Italy and in Miocene strata of Indonesia; age range: 5.332 to 2.588 Ma.^{[3] [4]}

Description

The narrow, solid and turreted shell has a fusiform shape. The protoconch consists of 4 whorls, with a sinusigera apex. The shell is axially sculptured by numerous slender and continuous riblets. The aperture measures about a third of the length of the shell. The short siphonal canal is wide. The anal sinus is deep and broad, separated from the body whorl by a callosity. A brown band on the periphery is a usual feature.^[5]

Species

Species within the genus Iredalea include:

• Iredalea adenensis Morassi & Bonfitto, 2013^[6]
• Iredalea agatho (W.H. Dall, 1918)
• Iredalea balteata (A.A. Gould, 1860)
• Iredalea exilis (Pease, 1868)
• Iredalea inclinata (Sowerby III, 1893)
• Iredalea macleayi (Brazier, 1876)
• Iredalea pupoidea (H. Adams, 1872)
• Iredalea pygmaea (Dunker, 1860)
• Iredalea subtropicalis Oliver, 1915
• Iredalea thalycra (J.C. Melvill & R. Standen, 1896)
• Iredalea theoteles (Melvill & Standen, 1896)

Species brought into synonymy:

• Iredalea acuminata (J.W. Mighels, 1848): synonym of Pyrgocythara mighelsi (Kay, 1979)
• Iredalea ella (Pilsbry & Lowe, 1932): synonym of Brephodrillia ella Pilsbry & Lowe, 1932
• Iredalea (Brephodrillia) perfecta (Pilsbry & Lowe, 1932): synonym of Brephodrillia perfectus Pilsbry & Lowe, 1932

References

• Vaught, K.C. (1989). A classification of the living Mollusca. American Malacologists: Melbourne, FL (USA). . XII, 195 pp.
• Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. (2011) A new operational classification of the Conoidea. Journal of Molluscan Studies 77: 273-308

External links

• Oliver W.R.B. (1915) The Mollusca of the Kermadec Islands. Transactions and Proceedings of the New Zealand Institute, 47, 509–568, pls. 9–12
• Biodiversity Library: Iredalea

Notes and References

1. P. Bouchet . Yu. I. Kantor . A. Sysoev . N. Puillandre . 2011 . A new operational classification of the Conoidea (Gastropoda) . . 77 . 3 . 273–308 . 10.1093/mollus/eyr017. free .
2. http://rsnz.natlib.govt.nz/volume/rsnz_47/rsnz_47_00_008530.html Oliver, W.R.B. (1915) The Mollusca of the Kermadec Islands. Transactions of the New Zealand Institute, 47, 509–568, pls. 9–12
3. http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=97913 Fossilworks : Iredalea
4. D. Scarponi and G. Della Bella. 2003. Molluschi marini del Plio-Pleistocene dell'Emilia-Romagna e della Toscana, Conoidea, Vol. 1 - Drilliidae e Turridae. Università di Bologna, Museo geologico Giovanni Capellini 1-89
5. https://archive.org/details/revisionofaustri00hedl Hedley, Charles (1920), A revision of the Australian Turridae; Records of the Australian Museum, vol. XIII nr. 6, Sydney
6. http://biotaxa.org/Zootaxa/article/view/zootaxa.3710.3.5 Morrassi, Mauro & Antonio Bonfitto. (2013). "Four new African turriform gastropods." Zootaxa 3710 (3): 271-280