Micrelenchus

Micrelenchus sanguineus, copyright Natural History Museum Rotterdam.

Belongs within: Trochidae.

Micrelenchus is an Australasian genus of small top shells with a relatively low spire and the columellar fold evanescent or not apparent (Knight et al. 1960).

Micrelenchus Finlay 1926 DK08
    |  i. s.: M. dilatatus (Sowerby 1870) P61 (see below for synonymy)
    |         M. huttoni (Smith 1876) P61 [=Cantharidus tenebrosus huttoni F27, M. tenebrosus huttoni F27]
    |         M. micans (Suter 1897) P61 [=Gibbula micans F27, Cantharidus micans F27]
    |         M. parcipictus Powell 1946 P61
    |         M. rufozonus (Adams 1853) P61 [=Cantharidus rufozonus F27]
    |         M. tenebrosus (Adams 1853) P61 [=Cantharidus tenebrosus F27]
    |--M. (Micrelenchus) P61
    |    |--*M. (M.) sanguineus (Gray 1843) P61 (see below for synonymy)
    |    |    |--M. s. sanguineus P61
    |    |    `--M. s. cryptus Powell 1946 P61
    |    `--M. (M.) caelatus (Hutton 1884) P61 [=Cantharidus coelatus F27, M. sanguineus coelatus F27]
    |         |--M. c. caelatus P61
    |         |--M. c. archibenthicola Dell 1956 P61
    |         |--M. c. bakeri Fleming 1948 P61
    |         |--M. c. elongatus (Suter 1897) P61 (see below for synonymy)
    |         |--M. c. morioria Powell 1933 P61
    |         `--M. c. mortenseni (Odhner 1924) P61 [=Gibbula mortenseni F27, M. sanguineus mortenseni F27]
    `--M. (Plumbelenchus Finlay 1926) DK08
         |--‘Cantharidus’ (*P.) capillaceus (Philippi 1848) P61 (see below for synonymy)
         |--M. (P.) armulatus Darragh & Kendrick 2000 DK08
         |--‘Cantharidus’ (P.) coruscans (Hedley 1916) P61 [=Photinula coruscans F27, Margarella coruscans F27]
         `--‘Cantharidus’ (P.) pruninus (Gould 1844) [=Trochus pruninus] KC60

Micrelenchus dilatatus (Sowerby 1870) P61 [=Cantharidus dilatatus F27; incl. Photinula suteri Smith 1894 F27, Gibbula suteri F27]

Micrelenchus (Micrelenchus) caelatus elongatus (Suter 1897) P61 [=Cantharidus sanguineus var. elongatus F27, M. sanguineus elongatus F27]

*Micrelenchus (Micrelenchus) sanguineus (Gray 1843) P61 [=Trochus sanguineus P61, Cantharidus (M.) sanguineus KC60; incl. C. oliveri Iredale 1915 F27, Micrelenchus oliveri P61]

*Type species of generic name indicated

REFERENCES

[DK08] Darragh, T. A., & G. W. Kendrick. 2008. Silicified Eocene molluscs from the Lower Murchison district, Southern Carnarvon Basin, Western Australia. Records of the Western Australian Museum 24 (3): 217–246.

[F27] Finlay, H. J. 1927. A further commentary on New Zealand molluscan systematics. Transactions and Proceedings of the New Zealand Institute 57: 320–485.

[KC60] Knight, J. B., L. R. Cox, A. M. Keen, R. L. Batten, E. L. Yochelson & R. Robertson. 1960. Gastropoda: systematic descriptions. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt I. Mollusca 1: Mollusca—General Features, Scaphopoda, Amphineura, Monoplacophora, Gastropoda—General Features, Archaeogastropoda and some (mainly Paleozoic) Caenogastropoda and Opisthobranchia pp. I169–I331. Geological Society of America, and University of Kansas Press.

[P61] Powell, A. W. B. 1961. Shells of New Zealand: An illustrated handbook 4^th ed. Whitcombe and Tombs Limited: Christchurch.