Pterospermopsis |
Pterospermopsis foveolata
|
Algeria |
Ludlovian |
|
Pterospermopsis |
Pterospermopsis heol
|
Algeria |
Givetian |
Strunian |
Pterospermopsis |
Pterospermopsis hermosita
|
Algeria |
Gedinnian |
Givetian |
Pterotosphaerula |
Pterotosphaerula astrala
|
Algeria |
Ludlovian |
|
Pterotosphaerula |
Pterotosphaerula astrala
|
Algeria |
Ludlovian |
Gedinnian |
Quadraditum |
Quadraditum fantasticum
|
Algeria |
Ludlovian |
|
Quadraditum |
Quadraditum incisum
|
Algeria |
Ludlovian |
|
Riculasphaera |
Riculasphaera fissa
|
Algeria |
Gedinnian |
Siegenian |
Saharidia |
Saharidia downiei
|
Algeria |
Tremadocian |
|
Saharidia |
Saharidia fragilis
|
Algeria |
Tremadocian |
|
Schizocystia |
Schizocystia bicornuta
sp. nov. |
Algeria |
Famennian |
Strunian |
Schizocystia |
Schizocystia saharica
sp. nov. |
Algeria |
Ludlovian |
Givetian |
Staplinium |
Staplinium cambriense
|
Algeria |
Tremadocian |
|
Stellinium |
Stellinium octoaster
|
Algeria |
Emsian |
Strunian |
Striatotheca |
Striatotheca quieta
|
Algeria |
Arenigian |
Ashgillian |
Triangulina |
Triangulina alargada
|
Algeria |
Emsian |
|
Tunisphaeridium |
Tunisphaeridium tentaculaferum
|
Algeria |
Ludlovian |
Frasnian |