 Protomycena is an extinct monotypic genus of gilled fungus in the family Mycenaceae , of order Agaricales . At present it contains the single species Protomycena electra , known from a single specimen collected in an amber mine in the Cordillera Septentrional area of the Dominican Republic . The fruit body of the fungus has a convex cap that is 5 mm ( 0 @.@ 2 in ) in diameter , with distantly spaced gills on the underside . The curved stipe is smooth and cylindrical , measuring 0 @.@ 75 mm ( 0 @.@ 030 in ) thick by 10 mm ( 0 @.@ 39 in ) long , and lacks a ring . It resembles extant ( currently living ) species of the genus Mycena . Protomycena is one of only five known agaric fungus species known in the fossil record and the second to be described from Dominican amber . 
 Protomycena <a href='drop_aux' title='1'><mark>is</mark></a>an extinct monotypic genus of gilled fungus in the family Mycenaceae , of order Agaricales . At present it <a href='uninflect' title='2'><mark>contains</mark></a> the single species Protomycena electra , known from a single specimen collected in an amber mine in the Cordillera Septentrional area of the Dominican Republic . The fruit body of the fungus <a href='got' title='3'><mark>has</mark></a> a convex cap <a href='null_relcl' title='4'><mark>that</mark></a><a href='drop_aux' title='5'><mark>is</mark></a>5 mm ( 0 @.@ 2 in ) in diameter , with distantly spaced gills on the underside . The curved stipe <a href='drop_aux' title='6'><mark>is</mark></a>smooth and cylindrical , measuring 0 @.@ 75 mm ( 0 @.@ 030 in ) thick by 10 mm ( 0 @.@ 39 in ) long , and <a href='uninflect' title='7'><mark>lacks</mark></a> a ring . It <a href='uninflect' title='8'><mark>resembles</mark></a> extant ( currently living ) species of the genus Mycena . Protomycena <a href='drop_aux' title='9'><mark>is</mark></a>one of only five known agaric fungus species known in the fossil record and the second to be described from Dominican amber . 
Protomycena an extinct monotypic genus of gilled fungus in the family Mycenaceae , of order Agaricales . At present it contain da single species Protomycena electra , known from a single specimen collected in an amber mines in tdaCordillera Septentrional area of the Dominican Republic . Thdaruit body of the fungus got a convex cap 5 mm ( 0 @.@ 2 in ) in diameter , with distantly spaced gills on the underside . The curved stipe smooth and cylindrical , measuring 0 @.@ 75 mm ( 0 @.@ 030 in ) thick by 10 mm ( 0 @.@ 39 in ) long , and lack a ring . It resemble extant ( currently living ) species of the genus Mycena . Protomycena one of only five known agaric fungus species known in thedassil record and the second to be described from Dominican neva .