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

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

4

Asaphus

An Ordovician trilobite from the Baltic region, with species such as A. kowalewskii bearing stalked eyes up to 6 cm tall...

Russian Smooth Ordovician Asaphida

8.6 Great

5

Scotoharpes

Scotoharpes is an Ordovician harpetid trilobite genus with a broad pitted cephalic fringe, fossils of which are found in...

European Ordovician Fringed Harpida

8.5 Great

6

Isotelus

A large Ordovician trilobite from North America; Isotelus rex from Manitoba, Canada, ranks among the largest trilobites...

Smooth North American Ordovician Asaphida

8.3 Great

7

Sphaerexochus

A Silurian cheirurid trilobite recognized by its dramatically inflated, globose glabella, found in Silurian carbonates o...

European Ordovician Phacopida Cheiruridae

8.1 Great

8

Cheirurus

A Silurian to Devonian cheirurid trilobite recognizable by its multi-lobed pygidium bearing prominent spines, known from...

European Ordovician Phacopida Cheiruridae

7.9 Good

9

Pseudoasaphus

An Ordovician asaphid trilobite from Baltic Russia, closely related to Neoasaphus and also known for three-dimensionally...

Russian Ordovician Asaphida Asaphidae

7.5 Good

10

Ogygites

An Ordovician trilobite of the family Ogygitidae, known from Europe and found in Llanvirn to Caradoc-age rocks across Go...

European Smooth Ordovician Asaphida

6.8 Fair

11

Illaenus

Illaenus is an Ordovician-Silurian trilobite genus with a broad smooth cephalon and large eyes, well represented in the...

European Ordovician Asaphida Illaenidae

6.2 Fair

12

Nileus

Nileus is an Ordovician trilobite genus with a smooth, inflated cephalon and large eyes, common in the Ordovician limest...

Smooth Scandinavian Ordovician Asaphida

6.0 Fair

13

Ectillaenus

A Silurian illaenid trilobite from Europe, Ectillaenus was described by Salter in 1866 and is recognized by its broad ce...

European Smooth Ordovician Asaphida

6.0 Fair

14

Asaphellus

Ordovician asaphid trilobite widely distributed across Gondwana and peri-Gondwanan terranes, serving as an important too...

North African Smooth Ordovician Asaphida

5.8 Mediocre

15

Nobiliasaphus

An Ordovician trilobite from the Baltic region and South America, Nobiliasaphus is notable for its large, prominent comp...

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

Ordovician nileid trilobite known from North Africa and the Middle East, contributing to understanding of shallow-marine...

European Smooth Ordovician Asaphida

5.0 Mediocre

18

Ananaspis

Ordovician trilobite genus known from European strata, a member of the diverse mid-Paleozoic shallow-marine benthos pres...

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

A Cambrian trilobite genus distinguished by an elongated, pointed glabella, known from Middle Cambrian deposits and clas...

North African Smooth Ordovician Asaphida

4.8 Poor