Molluscs › Murex Snails
Dark Unicorn
Mexacanthina lugubris
25 photos
Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
Emarginate DogwinkleNucella emarginata
Black TegulaTegula funebralis
Striped DogwinkleNucella ostrina
Gilded TegulaTegula aureotincta
Carinate Rock ShellIndothais lacera
Wavy TurbanMegastraea undosa
Stramonita biserialis
Common PeriwinkleLittorina littorea
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 609 |
|---|---|
| California | 609 |
| Mexico | 21 |
| Baja California | 20 |
| Baja California Sur | 1 |
Counts show where people looked, not only where it lives.
Traits
Physical
- Shell-bearingProtected by a hard shellFrom its classification
Classification
| Kingdom | Animals · Animalia |
|---|---|
| Phylum | Molluscs · Mollusca |
| Class | Gastropods · Gastropoda |
| Order | Neogastropoda |
| Family | Murex Snails · Muricidae |
| Genus | Mexacanthina |
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- How much to rely on each source
Remember the name next time.
Practise Dark Unicorn with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.