Gyrocochlea

Goodnight scrub pinwheel snail Gyrocochlea goodnight, from factsaboutsnails.com.

Belongs within: Punctoidea.

Gyrocochlea is a genus of very small snails with a discoid shell bearing prominent radial ribs found in eastern Australia (Stanisic et al. 2010).

Characters (from Stanisic et al. 2010): Shell very small, subdiscoidal to biconcave with a sunken to flat spire, often nautiliform with a flared last whorl; whorls laterally compressed and shouldered to rounded, sutures impressed; protoconch relatively large, reticulate with radial ribs and microspiral cords combined in varying intensities, teleoconch with very prominent, crowded to widely spaced, protractively sinuate radial ribs, microsculpture of microradial ribs and low microspiral cords; umbilicus wide to very wide, U-shaped to cup shaped. Colour beige to dark brown.

Gyrocochlea Hedley 1924 SS10
    |--*G. vinitincta (Cox 1868) [=Helix vinitincta] SS10
    |--G. appletoni Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. austera (Hedley 1912) SS10
    |--G. burleigh Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. calliope Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. canalis Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. chambersae Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. cinnamea (Hedley 1912) SS10
    |--G. conjuncta (Iredale 1941) SS10
    |--G. convoluta Hedley 1924 SS10
    |--G. curtisiana (Hedley 1912) SS10
    |--G. danieli Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. etna Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. eurythma Hedley 1924 SS10
    |--G. fitzgeraldae Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. flammulata Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. gibraltar Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. goodnight Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. greenae Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. hawkesburyana Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. impressa Hedley 1924 SS10
    |--G. iuloidea (Forbes 1851) SS10
    |--G. janetwaterhouseae Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. kessneri Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. multicosta Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. myora Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. notiala Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. paucilamellata Stanisic 1990 SS10
    |--G. planorbis Hedley 1924 [incl. G. conferta Hedley 1924] SS10
    |--G. ponderi Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. prava Hedley 1924 SS10
    |--G. raveni Stanisic in Stanisic, Shea et al. 2010 SS10
    |--G. sonyacleggae Stanisic in Stanisic, Shea et al. 2010 SS10
    `--G. wauchope Stanisic in Stanisic, Shea et al. 2010 SS10

*Type species of generic name indicated

REFERENCES

[SS10] Stanisic, J., M. Shea, D. Potter & O. Griffiths. 2010. Australian Land Snails vol. 1. A. field guide to eastern Australian species. Bioculture Press: Mauritius.