|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Gastropoda - Murchisoniina - Murchisoniidae
It was recombined as Brilonella serpens by Kayser (1873), Knight (1941) and Wagner (2017).
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|J. B. Knight 1941||Small, trochiform gastropods with a slit and selenizone, the final whorl at gerontic stages turning sharply upward to lie along the spire; whorl profile at ephebic stages strongly rounded; sutures moderately deep; nucleus consisting of about 1§ whorls smooth, simple, dextral, and seemingly without slit or sinus; base at ephebic stages seemingly minutely phaneromphalous; columellar and parietal lips at ephebic stages unknown; outer lip at ephebic stages with a broad shallow sinus culminating low on the whorl in a moderately deep slit which gives rise to a selenisone, at late neanic stages no slit but a broadly notched sinus only and at early neanic stages seemingly without either sinus or notch; the margin of the lip at ephebic stages leaving the upper suture in a radial direction quickly turns to a moderate backward obliquity, then passes across the upper whorl face with diminishing obliquity until close to the selenizone where it turns more strongly backward, below the selenizone passing across the base with moderate forward obliquity which diminishes only very slightly before the umbilicus is reached; selenizone developed only at ephebic and gerontic stages bordered by strong revolving lirae and with strong, sharp, regular lunulae; ornamentation strong, sharp, regular, transverse lirae with relatively wide, flat interspaces; shell moderately thick, its structure unknown. The holotype measures 8 mm. in height and 8 mm. in width excluding the aberrant final half whorl, pleural angle of 60 degrees.|