Emarginula huzardii is a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of sea snail

Sea snail

Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....

, a marine gastropod mollusk in the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Fissurellidae, the keyhole limpets.

Description

Emarginula huzardii is a small keyhole limpet, with a depressed, oblong-ovate shell no longer than 13 mm, the breadth 8 mm and the height 2.5 to 4 mm. The minute apex

Apex (mollusc)

Apex is an anatomical term for the tip of the mollusc shell of a gastropod, scaphopod, or cephalopod mollusc.-Gastropods:The word "apex" is most often used to mean the tip of the spire of the shell of a gastropod...

 is slightly recurved. The straight posterior slope is half the length of the convex front slope. The exhalant slit is narrow, about one-fifth to one-sixth the length of the shell. A narrow callus extends from the apex to the slit. The surface is reticulated with 25 - 28 alternately larger and smaller radiating riblets and delicately raised concentric laminae. These form compressed scales on the ribs and cut the interstices into pits. The side margin is finely denticulated and arched so that the shell rests upon the ends only.

Distribution

This species has only been found in the Mediterranean Sea

Mediterranean Sea

The Mediterranean Sea is a sea connected to the Atlantic Ocean surrounded by the Mediterranean region and almost completely enclosed by land: on the north by Anatolia and Europe, on the south by North Africa, and on the east by the Levant...

 and the Adriatic Sea

Adriatic Sea

The Adriatic Sea is a body of water separating the Italian Peninsula from the Balkan peninsula, and the system of the Apennine Mountains from that of the Dinaric Alps and adjacent ranges...

, living on infralittoral hard substrates.