swap_horiz Onnia Alternatives

1

Neoasaphus

Neoasaphus is a type of trilobite fossil belonging to the Asaphida order and Asaphidae family. Primarily found in Ordovi...

Russian Ordovician Asaphida Asaphidae

9.2 Excellent

2

Isotelus maximus

Isotelus maximus is a large asaphid trilobite species that lived during the Late Ordovician and is known from rocks in e...

Large Ohio Ordovician Asaphida

9.1 Excellent

3

Pricyclopyge

Pricyclopyge is a genus of trilobite belonging to the family Cyclopygidae, known from Ordovician-period deposits primari...

Pelagic Iberian Ordovician Cyclopygida

8.6 Great

4

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

5

Selenopeltis

Selenopeltis is an extinct genus of odontopleurid trilobites that lived during the Ordovician period. Fossils of this ma...

Iberian Spiny Ordovician Odontopleurida

8.0 Great

6

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

7

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

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

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

10

Primaspis

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

Blind Rare Ordovician Asaphida

6.7 Fair

11

Placoparia

Placoparia is a genus of calymenid trilobites from the Ordovician Period. Fossils are known from Europe, including Iberi...

Iberian Ordovician Phacopida Enrolled

6.5 Fair

12

Neseuretus

Neseuretus is a genus of calymenid trilobites from the Ordovician Period. It is widely associated with marine rocks of t...

Iberian Ordovician Phacopida Enrolled

6.5 Fair

13

Ampyx nasutus

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

European Blind Ordovician Trinucleida

6.5 Fair

14

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

15

Tretaspis

Tretaspis is an extinct genus of trinucleid trilobites from the Ordovician Period. Its broad cephalon carries a distinct...

European Blind Ordovician Trinucleida

5.8 Mediocre

16

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

17

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

18

Opipeuter

Opipeuter is an extinct genus of Ordovician trilobites interpreted as pelagic, meaning that it lived in the open water r...

Pelagic Blind Ordovician Cyclopygida

5.0 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