Ammonitella yatesii

Ammonitella yatesii, the tight coin, is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Megomphicidae. This species is endemic to the United States. ^{[citation needed]}

Ammonitella yatesii
Conservation status
Vulnerable  (IUCN 2.3)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Informal group:	Sigmurethra
Family:	Megomphicidae
Genus:	Ammonitella
Species:	A. yatesii
Binomial name
Ammonitella yatesii J.G. Cooper, 1869

A specimen collected in 1869

The shell in this species is very tightly coiled, hence the common name.