Leptaena
Leptaena is an extinct genus of mid-sized brachiopod that existed from the Dariwilian epoch to the Emsian epoch, though some specimens have been found in strata as late in age as the Tournasian epoch. Like some other Strophomenids, "Lepteana" were epifaunal, meaning they lived on top of the seafloor, not buried within it, and were suspension feeders. 
Q123509
extinct
Concept
Q34740
genus
Concept
Q178272
brachiopod
Concept
Q1032866
Dariwilian epoch
TIME
Q576789
Emsian epoch
TIME
Q12758989
strata
Concept
Q940381
Tournasian epoch
TIME
Q1289434
Strophomenids
Concept
Q104021
epifaunal
MISC
Q1252491
suspension feeders
Concept
Q2127212
Leptaena
Concept
taxon rank