swap_horiz Sao Alternatives

1

Elrathia kingi

Elrathia kingi is a common trilobite fossil discovered primarily in the Middle Cambrian Wheeler Shale of Utah. It repres...

Utah Cambrian Abundant Ptychopariida

9.2 Excellent

2

Paradoxides

Paradoxides is an extinct genus of large trilobites belonging to the order Redlichiida, existing during the Middle Cambr...

Iconic Large Bohemian Cambrian

8.2 Great

3

Elrathia kingii

Elrathia kingii is an extinct ptychopariid trilobite from the Middle Cambrian Wheeler Shale of western Utah. Its fossils...

Utah Cambrian Abundant Ptychopariida

8.1 Great

4

Elrathia

Elrathia is an extinct genus of ptychopariid trilobite that lived during the Middle Cambrian period. Fossils of this mar...

Utah North American Cambrian Abundant

7.5 Good

5

Conocoryphe

Conocoryphe is an extinct genus of Middle Cambrian trilobites in the family Conocoryphidae. Fossils are known from regio...

Blind Bohemian Cambrian Ptychopariida

6.8 Fair

6

Modocia

Modocia is a genus of ptychopariid trilobites known from Middle Cambrian marine rocks. Fossils assigned to the genus occ...

Smooth North America Common Cambrian

6.8 Fair

7

Ellipsocephalus

Ellipsocephalus is a genus of ptychopariid trilobites from the Cambrian Period. It is especially associated with Cambria...

Smooth Bohemian Cambrian Ptychopariida

6.5 Fair

8

Norwoodia

Norwoodia is an extinct genus of Cambrian trilobites, a group of marine arthropods known from their mineralized exoskele...

Smooth Rare North America Cambrian

6.4 Fair

9

Dionide

Dionide is a genus of Ordovician trilobites in the family Dionididae. It is known from European Ordovician deposits and...

European Small Ordovician Ptychopariida

6.0 Fair

10

Ptychoparia

Ptychoparia is a genus of Middle Cambrian trilobites from Bohemia and other Cambrian fossil localities. It is the type g...

Bohemian Cambrian Ptychopariida Ptychopariidae

6.0 Fair

11

Hydrocephalus

Hydrocephalus is a genus of Cambrian trilobites described by Joachim Barrande in 1852. It is associated with the Barrand...

Bohemian Cambrian Redlichiida Paradoxididae

6.0 Fair

12

Bonnia

Bonnia is an extinct genus of Middle Cambrian trilobites known from marine rocks in North America. Its fossils occur in...

Small North American Cambrian Ptychopariida

5.8 Mediocre

13

Judomia

Judomia is an extinct genus of Cambrian trilobites known primarily from Siberian fossil assemblages. It has been used as...

Siberian Cambrian Ptychopariida Zone Fossil

5.8 Mediocre

14

Alokistocare

Alokistocare is an extinct genus of marjumiid trilobites from the Middle Cambrian. Its fossils are known from marine car...

North American Cambrian Ptychopariida Zone Fossil

5.8 Mediocre

15

Ehmaniella

Ehmaniella is an extinct genus of marjumiid trilobites from the Middle Cambrian. It is known from North American marine...

Small North American Cambrian Ptychopariida

5.8 Mediocre

16

Agraulos

Agraulos is a genus of Cambrian trilobites in the family Ptychopariidae. The genus was described by Joachim Barrande in...

Small Bohemian Cambrian Ptychopariida

5.5 Mediocre

17

Atops

Atops is an extinct genus of trilobites, a group of marine arthropods that lived during the early Cambrian Period. The g...

Small North American Ptychopariida Late Cambrian

5.2 Mediocre

18

Chancia

Chancia is an extinct genus of Middle Cambrian trilobites classified in the order Ptychopariida and the family Alokistoc...

Small North American Cambrian Ptychopariida

5.0 Mediocre

19

Bailiella

Bailiella is an extinct Middle Cambrian genus of trilobites in the family Conocoryphidae, named by Matthew in 1885. It i...

Small Asian Cambrian Ptychopariida

5.0 Mediocre

20

Microparia

Microparia is an extinct genus of Ordovician marine trilobites in the family Cyclopygidae. Its fossils are recorded from...

Small Cambrian Ptychopariida Zone Fossil

4.8 Poor