Category:Conodonts by geological period
Conodonts are animals that apparently appeared during the Cambrian, and disappeared during the Triassic.
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! style="background:{{period color|paleozoic}};text-align:center;" colspan="6" | :Category: {{{cat_prefix |
! style="background:{{period color|mesozoic}};" colspan="3" | Mesozoic Era
|- style="font-size:70%;"
! style="background:{{period color|cambrian}};width:75px;text-align:center" | :Category: {{{cat_prefix
! style="background:{{period color|ordovician}};width:56px;text-align:center;" | :Category: {{{cat_prefix
! style="background:{{period color|silurian}};width:32px;text-align:center;" | :Category: {{{cat_prefix
! style="background:{{period color|Devonian}};width:80px;text-align:center;" | :Category: {{{cat_prefix
! style="background:{{period color|carboniferous}};width:80px;text-align:center;" | :Category: {{{cat_prefix
! style="background:{{period color|permian}};width:63px;text-align:center;" | :Category: {{{cat_prefix
! style="background:{{period color|triassic}};width:68px;" | :Category: {{{cat_prefix
! style="background:{{period color|jurassic}};width:75px;" | Jurassic
! style="background:{{period color|cretaceous}};width:105px;" | Cretaceous
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