Taxonomy clear
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Speetonia colligataEarly Berriasian - Late Hauterivian
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Gaarderella granuliferaMiddle Albian - Late Albian
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Gaarderella santacruzensisLate Albian - Late Cenomanian
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Pickelhaube umbellatumEarly Valanginian
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Pickelhaube furtivaEarly Tithonian - Late Albian
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Ataktolithos kystraensisEarly Albian - Late Turonian
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Ataktolithos multicavusEarly Campanian - Late Campanian
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Falklandicus reticulatusLate Campanian
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Falklandicus praereticulatusEarly Turonian
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Miravetesina bergeniiEarly Turonian - Late Maastrichtian
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Miravetesina culverensisLate Aptian - Early Coniacian
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Miravetesina favulaTithonian - Valanginian
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Cruciellipsis cuvillieri grandisEarly Berriasian - Early Hauterivian
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Cruciellipsis cuvillieri cuvillieriLate Tithonian - Late Hauterivian
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Cretarhabdus primusEarly Berriasian - Late Maastrichtian
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Cretarhabdus limbicrassusEarly Hauterivian - Late Maastrichtian
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Cretarhabdus conicusEarly Valanginian - Late Maastrichtian
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Cretarhabdus circularisLate Aptian - Middle Campanian
