swap_horiz Alokistocare Alternatives

1

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

2

Dikelocephalus

Dikelocephalus is a large Late Cambrian trilobite genus known from Wisconsin, USA, including material from the St. Lawre...

Large North American Ptychopariida Late Cambrian

7.0 Good

3

Crepicephalus

Crepicephalus is an extinct genus of trilobites from the Late Cambrian of North America. It belongs to the broader group...

North American Ptychopariida Late Cambrian Zone Fossil

6.2 Fair

4

Kootenia

Kootenia is an extinct genus of corynexochid trilobites from the Middle Cambrian. Fossils assigned to the genus are know...

North American Cambrian Corynexochida Zone Fossil

6.2 Fair

5

Elvinia

Elvinia is a genus of Late Cambrian trilobites known from North America. It belongs to the family Elvinidae and provides...

North American Ptychopariida Late Cambrian Zone Fossil

6.0 Fair

6

Saukia

Saukia is a genus of Late Cambrian trilobites in the family Saukiidae. Fossils assigned to the genus are known from Nort...

North American Ptychopariida Late Cambrian Zone Fossil

6.0 Fair

7

Glossopleura

Glossopleura is a genus of Middle Cambrian trilobites known especially from North American fossil deposits. It belongs t...

North American Cambrian Corynexochida Zone Fossil

6.0 Fair

8

Bathyuriscus

Bathyuriscus is a genus of Middle Cambrian trilobites that is widely represented in North American fossil deposits. It i...

North American Cambrian Corynexochida Zone Fossil

6.0 Fair

9

Cedaria

Cedaria is a genus of Late Cambrian trilobites and the name-bearing taxon for the Cedaria Biozone. This biozone is a bio...

North American Ptychopariida Late Cambrian Zone Fossil

6.0 Fair

10

Irvingella

Irvingella is an extinct genus of Late Cambrian trilobites. Fossils attributed to the genus have been reported from seve...

North American Ptychopariida Late Cambrian Zone Fossil

5.8 Mediocre

11

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

12

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

13

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

14

Saratogia

Saratogia is a genus of Late Cambrian saukiid trilobites known from North America. Early specimens were described from N...

North American Ptychopariida Late Cambrian Zone Fossil

5.5 Mediocre

15

Aphelaspis

Late Cambrian trilobite defining the Aphelaspis biozone, a key stratigraphic marker for the Steptoean Stage in the North...

North American Ptychopariida Late Cambrian Zone Fossil

5.3 Mediocre

16

Dorypyge

Dorypyge is an extinct genus of Middle Cambrian trilobites in the family Dorypygidae and the order Corynexochida. Fossil...

North American Cambrian Corynexochida Zone Fossil

5.2 Mediocre

17

Pterocephalia

Pterocephalia is an extinct genus of Late Cambrian trilobites assigned to the family Pterocephaliidae. Fossils are known...

North American Ptychopariida Late Cambrian Zone Fossil

5.2 Mediocre

18

Dunderbergia

Dunderbergia is a Late Cambrian trilobite from the Great Basin of Nevada, USA, named after Dunderberg Peak in the Eureka...

Small North American Ptychopariida Late Cambrian

5.2 Mediocre

19

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

20

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