Tylencholaimus proximus
Thorne, 1939
Photo Gallery- Konza Prairie
Photo Gallery-Homestead Nat'l Monument
Photo Gallery-Haughton Crater

Measurements (from Thorne, 1974)
L = 0.4 mm; a = 17; b = 3.0; c = 31; V = 65

Description (from Thorne, 1974)
    Body practically straight when relaxed.  Lip region angular, set off by constriction, about 1/3 width of neck base.  Spear length about equal to lip region width, with aperture occupying 1/3 its length.  Extensions slightly longer than spear with minute basal swellings.  Esophagus enlarged in basal 2/5, with dorsal and 1 pair of gland nuclei visible.  Cardia elongate conoid, 1/3 body width.  Anterior ovary very long, reflexed about halfway to vulva.  Posterior uterine branch absent.  Eggs about 1/5 body length and completely fill body cavity.  Prerectum length 3 times body width.  Tail elongate conoid with rounded terminus.
    Tylencholaimus proximus is immediately recognized by its small size, long neck and single long anterior ovary.
    Habitat: Native sod from Watertown, Mitchell, Presho, Parker and other points in South Dakota and near Miles City, Montana.

DNA Sequences Obtained
Specimen:  Collected:
KonzaIII BB-77 Konza Prairie