| Microdrillia | |
|---|---|
 | |
| Shell of † Microdrillia aturensis (holotype in MNHN, Paris) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Superfamily: | Conoidea |
| Family: | Borsoniidae |
| Genus: | Microdrillia Casey, 1903 |
| Type species | |
| † Oligotoma meyeriCossmann, 1889 | |
| Synonyms [1] | |
| |
Microdrillia is a genus of very small sea snails, marine gastropod mollusks in the family Borsoniidae. [1]
The species in this genus are characterized by a well-developed, multispiral, closely coiled protoconch. One to three of its basal whorls are costulate. The body whorl is wholly devoid of costae but spirally carinate. The retral sinus is relatively large, circularly rounded and close to the suture. The aperture is oblique. The columella is callous, with or without plications. The siphonal canal is short or subobsolete.
The following species of this genus are also found as fossils in the age range of 48.6 Ma to 0.781 Ma: Microdrillia comatotropis, Microdrillia cossmanni, Microdrillia crispata, Microdrillia harrisi, Microdrillia ouchitae, Microdrillia propetrina, Microdrillia tersa, Microdrillia trina [2]
This marine genus occurs in the Gulf of Oman, off South Africa and off Australia (New South Wales, Queensland).
Epitonium is a genus of small predatory sea snails, marine gastropod mollusks. Epitonium is the type genus of the family Epitoniidae, the wentletraps.
Solariella is a genus of small to minute sea snails, marine gastropod molluscs in the family Solariellidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Scissurella is a genus of minute sea snails, marine gastropod molluscs in the family Scissurellidae, the small slit snails.
Drillia is a genus of small sea snails, marine gastropod mollusks in the family Drilliidae.
Splendrillia is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.
Daphnella is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Kermia is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Pleurotomella is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Veprecula is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Ptychobela is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.
Turridrupa is a genus of sea snails, marine gastropod mollusks in the family Turridae, the turrids.
Drilliola is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae, the cone snails and their allies.
Mangelia is a large genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Tomopleura is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.
Taranis is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.
Horaiclavidae is a family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.
Acteocina is a genus of very small sea snails, bubble snails, marine opisthobranch gastropod mollusks in the family Tornatinidae, the canoe bubbles or chalice bubble snails.
Pseudorhaphitoma is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Microdrillia sansibarica is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.
