Arquimedes sp._Carbonifero_USA_Brioozos
Arctinurus-boltoni-FT540bArctinurus-boltoni(lichidae)-Silurian-Middleport, Estado de Nueva York-USA
Asaphellus-cf.-fezouataensis-FT416bAsaphellus cf. fezouataensis_Ordovician_Zagora_Morocco
Asaphiscus_wheeleri_cambrian_USA
Asaphiscus-wheeleri-FT493bAsaphiscus_wheeleri-Cambrian_Utah,USA
Asaphiscus_wheleri_Wheeler Formation, Middle Cambrian-House Range, western Utah, USA
Asaphus-expansus-FT404bAsaphus expansus_Ordovician_St. Pestesburg Region trilobite
FA105-Aspidoceras-acanthicum-bAspidoceras acanthicum-ammonite,fossil, jurassic, Madagascar
Stenaster-F615bAsteroidea sp._Stenaster_Ordovician_Morocco_Starfisch_Estrella de mar
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