Trochus

Spotted top shell Trochus maculatus, copyright Ria Tan.


Belongs within: Trochinae.

Trochus, top shells, is a genus of marine gastropods bearing a conical shell with a more or less flattened base, known from the Miocene to the present day (Knight et al. 1960).

<==Trochus Linnaeus 1758 BR05 [=Lamprostoma Swainson 1840 KC60, Polydonta Schumacher 1817 KC60]
    |--T. (Trochus) WG71
    |    |--*T. (T.) maculatus Linnaeus 1758 [=*Lamprostoma maculatum, *Polydonta maculata] KC60
    |    `--T. (T.) lineatus Lamarck 1822 WG71
    |--T. (Belangeria Fischer 1879) KC60
    |    `--T. (*B.) scabrosus Philippi 1850 KC60
    |--T. (Coelotrochus Fischer 1879) [incl. Neozelandia Cossmann 1918] KC60
    |    |--T. (*C.) tiaratus Quoy & Gaimard 1834 F27a
    |    |--T. (C.) avarus Suter 1917 [=T. (Anthora) avarus] F27a
    |    `--T. (C.) huttoni (Cossmann 1916) (see below for synonymy) F27b
    |--T. (Infundibulops Pilsbry 1889) KC60
    |    `--T. (*I.) erythraeus Brocchi 1821 KC60
    |--T. (Infundibulum Montfort 1810) [=Carinidea Swainson 1840] KC60
    |    `--T. (*I.) concavus Gmelin 1791 [=*Carinidea concava] KC60
    |--T. (Praecia Gray 1857) KC60
    |    `--T. (*P.) elegantulus Wood 1828 KC60
    |--T. (Scalaetrochus Etheridge 1890) F71, KC60
    |    `--T. (*S.) lindstromi Etheridge 1890 KC60, F71
    |--T. (Thorista Iredale 1915) [=Anthora Gray 1857 non Doubleday 1844] KC60
    |    |--T. (T.) viridis Gmelin 1791 KC60 (see below for synonymy)
    |    `--T. camelophorus Webster 1906 F27a
    `--T. (Thoristella Iredale 1915) KC60
         |--T. (*T.) chathamensis (Hutton 1873) [=Polydonta chathamensis] KC60
         |    |--T. c. chathamensis F27a
         |    |--‘Thoristella’ c. aucklandica (Smith 1902) F27a
         |    |--‘Thoristella’ c. benthicola Finlay 1927 F27a
         |    |--‘Thoristella’ c. dunedinensis (Suter 1917) F27a
         |    |--‘Thoristella’ c. fossilis Finlay 1927 F27a
         |    `--‘Thoristella’ c. oppressa (Hutton 1878) F27a
         `--‘Thoristella’ carmesina (Webster 1908) [=Monilea carmesina] F27a

Trochus incertae sedis:
  T. antipodum Wilckens 1922 F27a
  T. astraliformis Lindström 1884 LYR78
  T. calcaratus Souverbie 1875 H09
  T. circinatus Hutton 1873 F27a
  T. fenestratus Gmelin 1791 H09
  T. fenneonianus K54
  T. hexagonus Philippi 1846 H09
  T. histrio Reeve 1842 BW09
  T. mutus Finlay 1924 [=T. nodosus Hutton 1885 (preoc.)] F27b
  T. niloticus C60
  T. occidentalis Mighels & Adams 1842 J49
  T. triserialis (Lamarck 1822) BW09

Nomen nudum: Trochus quattuorcarinata Mighels & Adams 1841 J49

Trochus (Coelotrochus) huttoni (Cossmann 1916) [=*Neozelandia huttoni; incl. Anthora conica Hutton 1883, T. conicus (preoc.)] F27b

Trochus (Thorista) viridis Gmelin 1791 KC60 [incl. Polydonta tuberculata Gray 1843 KC60, *Anthora tuberculata KC60, Trochus (*Thorista) tuberculatus F27a]

*Type species of generic name indicated

REFERENCES

[BR05] Bouchet, P., J.-P. Rocroi, J. Frýda, B. Hausdorf, W. Ponder, Á. Valdés & A. Warén. 2005. Classification and nomenclator of gastropod families. Malacologia 47 (1-2): 1-397.

[BW09] Bryce, C. & C. Whisson. 2009. The macromolluscs of Mermaid (Rowley Shoals), Scott and Seringapatam Reefs, Western Australia. Records of the Western Australian Museum Supplement 77: 177-208.

[C60] Cox, L. R. 1960. Gastropoda: general characteristics of Gastropoda. 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. I84-I169. Geological Society of America, and University of Kansas Press.

[F27a] Finlay, H. J. 1927a. A further commentary on New Zealand molluscan systematics. Transactions and Proceedings of the New Zealand Institute 57: 320-485.

[F27b] Finlay, H. J. 1927b. New specific names for austral Mollusca. Transactions and Proceedings of the New Zealand Institute 57: 488-533.

[F71] Fletcher, H. O. 1971. Catalogue of type specimens of fossils in the Australian Museum, Sydney. Australian Museum Memoir 13: 1-167.

[H09] Hedley, C. 1909. The Marine Fauna of Queensland: Address by the President of Section D. Australasian Association for the Advancement of Science: Brisbane.

[J49] Johnson, R. I. 1949. Jesse Wedgwood Mighels with a bibliography and a catalogue of his species. Occasional Papers on Mollusks 1 (14): 213-231.

[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.

[K54] Kurtén, B. 1954. The type collection of Ictitherium robustum (Gervais, ex Nordmann) and the radiation of the ictitheres. Acta Zoologica Fennica 86: 1-26.

[LYR78] Linsley, R. M., E. L. Yochelson & D. M. Rohr. 1978. A reinterpretation of the mode of life of some Paleozoic frilled gastropods. Lethaia 11: 105-112.

[WG71] Wilson, B. R., & K. Gillett. 1971. Australian Shells: illustrating and describing 600 species of marine gastropods found in Australian waters. A. H. & A. W. Reed: Sydney.

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