swap_horiz Symphysurus 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 rex

Isotelus rex is a remarkably large species of trilobite belonging to the Asaphida order. Recovered from Ordovician-age r...

Canadian Ordovician Asaphida Asaphidae

9.1 Excellent

3

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

4

Neoasaphus kowalewskii

Neoasaphus kowalewskii is a fossil trilobite discovered in Russia’s Ordovician deposits. This species is notable for its...

Russian Iconic Ordovician Asaphida

9.0 Excellent

5

Cyclopyge

Cyclopyge is a genus of trilobites from the Ordovician Period, recognized by exceptionally large compound eyes occupying...

Pelagic Rare Ordovician Asaphida

8.9 Great

6

Asaphus

Asaphus is a genus of trilobite from the Ordovician period, belonging to the family Asaphidae, with fossils primarily fo...

Russian Smooth Ordovician Asaphida

8.6 Great

7

Isotelus

Isotelus is an extinct genus of large asaphid trilobite that lived during the Ordovician period. It possessed a smooth,...

Smooth North American Ordovician Asaphida

8.3 Great

8

Pseudoasaphus

Pseudoasaphus is an extinct genus of asaphid trilobite that inhabited the marine environments of Baltica during the Ordo...

Russian Ordovician Asaphida Asaphidae

7.5 Good

9

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

10

Amphion

Ordovician asaphid trilobite from Baltica, known from Scandinavian and Baltic limestones and characterized by a smooth,...

Smooth Rare Scandinavia Ordovician

6.6 Fair

11

Illaenus

Illaenus is a genus of trilobites that lived during the Ordovician and Silurian periods. It is characterized by a broad,...

European Ordovician Asaphida Illaenidae

6.2 Fair

12

Nileus

Nileus is a genus of trilobites that lived during the Ordovician Period. It belongs to the family Nilaeidae and is recog...

Smooth Scandinavian Ordovician Asaphida

6.0 Fair

13

Ectillaenus

Ectillaenus is a genus of illaenid trilobites known from the Ordovician and Silurian fossil record of Europe. It was des...

European Smooth Ordovician Asaphida

6.0 Fair

14

Asaphellus

Asaphellus is an extinct genus of asaphid trilobites from the Ordovician Period. Its fossils are widely reported from Go...

North African Smooth Ordovician Asaphida

5.8 Mediocre

15

Nobiliasaphus

Nobiliasaphus is a genus of Ordovician asaphid trilobites recorded from the Baltic region and South America. Its most di...

Russian Ordovician Asaphida Asaphidae

5.5 Mediocre

16

Ormathops

Ordovician trilobite from the Anglo-Welsh basin used as a biostratigraphic index fossil for correlating Lower Ordovician...

North African Smooth Ordovician Asaphida

5.2 Mediocre

17

Nileoides

Nileoides is an extinct genus of asaphid trilobites from the Ordovician Period. It is recorded from the Lower to Middle...

European Smooth Ordovician Asaphida

5.0 Mediocre

18

Ananaspis

Ananaspis is an extinct genus of phacopid trilobites in the family Phacopidae, established by Campbell in 1967. It is kn...

European Smooth Silurian Asaphida

5.0 Mediocre

19

Synphoriodes

Ordovician trilobite genus known from European strata, a member of the diverse shallow-marine benthos of the period, wit...

European Smooth Ordovician Asaphida

5.0 Mediocre

20

Acrocephalaspis

Acrocephalaspis is an extinct genus of Cambrian trilobites placed in the family Acrocephalitidae and generally treated w...

North African Smooth Ordovician Asaphida

4.8 Poor