swap_horiz Tretaspis Alternatives

1

Scotoharpes

Scotoharpes is an extinct genus of harpetid trilobites that existed during the Ordovician period. The defining character...

European Ordovician Fringed Harpida

8.5 Great

2

Cryptolithus

Cryptolithus is an extinct genus of trinucleid trilobite that lived during the Ordovician period. It is distinguished by...

Blind North American Ordovician Trinucleida

8.3 Great

3

Sphaerexochus

Sphaerexochus is a genus of cheirurid trilobites known from Ordovician and Silurian marine rocks. Its most recognizable...

European Ordovician Phacopida Cheiruridae

8.1 Great

4

Cheirurus

Cheirurus is an extinct genus of trilobite belonging to the family Cheiruridae, with a fossil record spanning the Ordovi...

European Ordovician Phacopida Cheiruridae

7.9 Good

5

Trinucleus

Trinucleus is an extinct genus of trilobites that thrived during the Ordovician period, with fossils primarily located i...

Blind British Ordovician Trinucleida

7.8 Good

6

Ampyx

Ampyx is an extinct genus of trilobite from the order Trinucleida that lived during the Ordovician period. These blind t...

European Blind Ordovician Trinucleida

7.5 Good

7

Harpides

Harpides is an extinct genus of harpetid trilobites recorded from Cambrian and Ordovician marine rocks. It is distinguis...

European Ordovician Fringed Harpida

7.2 Good

8

Raphiophorus

Raphiophorus is an extinct genus of trilobites that existed during the Ordovician and Silurian geological periods. As a...

Blind Rare Ordovician Asaphida

7.1 Good

9

Lichas

Lichas is a trilobite genus ranging from the Ordovician to the Devonian and serves as the type genus of the order Lichid...

European Ordovician Tuberculate Lichida

7.0 Good

10

Ogygites

Ogygites is an extinct genus of Ordovician trilobites often placed within Ogygiidae, a group in the order Asaphida. It i...

European Smooth Ordovician Asaphida

6.8 Fair

11

Lonchodomas

Lonchodomas is an extinct Ordovician trilobite genus in the raphiophorid group of the order Asaphida. Its defining featu...

Blind Scandinavian Ordovician Trinucleida

6.8 Fair

12

Primaspis

Early Ordovician trilobite known from Baltic and Gondwanan deposits, representing an early post-Cambrian radiation withi...

Blind Rare Ordovician Asaphida

6.7 Fair

13

Dalmanitina

Dalmanitina is a genus of dalmanitid trilobites from the Ordovician Period. Fossils are known from Europe and North Afri...

European Ordovician Phacopida Tail Spine

6.5 Fair

14

Onnia

Onnia is a genus of trinucleid trilobites from the Ordovician Period. It is known from parts of Europe and North Africa...

Blind Iberian Ordovician Trinucleida

6.5 Fair

15

Ampyx nasutus

Ordovician raphiophorid trilobite distinguished by a prominent forward-projecting rostral spine, found across European a...

European Blind Ordovician Trinucleida

6.5 Fair

16

Trinodus

Trinodus is an extinct genus of small Ordovician trilobites assigned to the raphiophorid lineage. It is characterized by...

European Blind Ordovician Trinucleida

5.8 Mediocre

17

Marrolithus

Marrolithus is a genus of Ordovician trilobites in the family Trinucleidae. It has a broad cephalic fringe marked by pit...

European Blind Ordovician Trinucleida

5.8 Mediocre

18

Panderia

Panderia is a genus of Ordovician trilobites assigned to the superfamily Trinucleoidea. It is known from fossil deposits...

Blind Scandinavian Ordovician Trinucleida

5.2 Mediocre

19

Crozonaspis

Crozonaspis is an extinct genus of dalmanitid trilobites in the order Phacopida, established by Henry in 1968. It lived...

Blind Iberian Ordovician Trinucleida

5.0 Mediocre

20

Robergia

Robergia is an extinct genus of Ordovician trilobites in the family Remopleurididae, within the order Asaphida. It is re...

Blind Scandinavian Ordovician Trinucleida

5.0 Mediocre