''Frodospira cochleata'' is a species of extinct
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
in the family
Lophospiridae
Lophospiridae is an extinct taxonomic family of sea snails, marine gastropod mollusc
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,0 ...
. Fossil specimens from 422.9 and 421.3 million years ago
have been found in
Sweden
Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...
at
Grogarnsberget
Grogarnsberget or Grogarnsberg (lit. "The Grogarn Mountain" more appropriate "Grogarn Hill") is a plateau hill on the Östergarn coast, on the Swedish island of Gotland. On the hill are the remains of former hillfort, the second largest on Gotland ...
,
Hemse
Hemse is a locality situated on the Swedish island of Gotland with 1,700 inhabitants in 2014. It is the second largest locality (after Visby) on the island. Hemse is the main center of population in the southern part of the island, and it is kno ...
, and Sandarve kulle, in a hill about a kilometer north of
Fardhem Church
Fardhem Church ( sv, Fardhems kyrka) is a medieval church in Fardhem on the Swedish island of Gotland. The present-day church may have been preceded by a stave church; the current church is one of the most well-preserved Romanesque churches on Gotl ...
. A species of
epifaunal
Fauna is all of the animal life present in a particular region or time. The corresponding term for plants is ''flora'', and for fungi, it is ''funga''. Flora, fauna, funga and other forms of life are collectively referred to as '' biota''. Zool ...
filter feeder
Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Some animals that use this method of feedin ...
,
it had a slender,