swap_horiz Ptychaspis Alternatives

1

Phacops rana

Phacops rana is an iconic Devonian trilobite found primarily in eastern North America. Its exceptionally large, compound...

Iconic North American Devonian Phacopida

9.3 Excellent

2

Phacops

A Devonian trilobite with distinctive schizochroal compound eyes, used by paleontologist Niles Eldredge in the 1970s as...

Iconic North American Devonian Phacopida

8.7 Great

3

Arctinurus

Large Silurian trilobite from the Rochester Shale of New York State, notable for its distinctive stellate outline and fr...

Large North American Silurian Lichida

8.5 Great

4

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

5

Cryptolithus

Cryptolithus is an Ordovician trilobite genus famous for its broad perforated cephalic fringe nicknamed the lace collar,...

Blind North American Ordovician Trinucleida

8.3 Great

6

Dalmanites

A Silurian trilobite recognized by its elongated pygidial spine and well-developed eyes, found across North America, Eur...

North American Silurian Phacopida Tail Spine

8.0 Great

7

Ceraurus

An Ordovician cheirurid trilobite from North America distinguished by prominent genal spines and multiple pointed pygidi...

North American Ordovician Phacopida Cheiruridae

8.0 Great

8

Dikelocephalus

Dikelocephalus is a large Late Cambrian trilobite genus from Wisconsin, USA, notable for its size and abundance in the S...

Large North American Ptychopariida Late Cambrian

7.0 Good

9

Crepicephalus

Crepicephalus is a Late Cambrian trilobite genus from North America that serves as the namesake of the Crepicephalus Bio...

North American Ptychopariida Late Cambrian Zone Fossil

6.2 Fair

10

Elvinia

Elvinia is a Late Cambrian trilobite genus from North America used as an index fossil for the Elvinia Biozone in the upp...

North American Ptychopariida Late Cambrian Zone Fossil

6.0 Fair

11

Saukia

Saukia is a Late Cambrian trilobite genus belonging to family Saukiidae, found in North America and Asia, and associated...

North American Ptychopariida Late Cambrian Zone Fossil

6.0 Fair

12

Irvingella

Irvingella is a Late Cambrian trilobite genus valued for intercontinental biostratigraphic correlation, with occurrences...

North American Ptychopariida Late Cambrian Zone Fossil

5.8 Mediocre

13

Parabolina

Late Cambrian trilobite widely used as a biostratigraphic index fossil for upper Cambrian zones, particularly in Scandin...

Scandinavian Ptychopariida Late Cambrian Olenidae

5.5 Mediocre

14

Parabolinella

Late Cambrian trilobite closely related to Parabolina, known from Scandinavia and employed in upper Cambrian biostratigr...

Scandinavian Ptychopariida Late Cambrian Olenidae

5.2 Mediocre

15

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

16

Atops

A Late Cambrian trilobite genus from North America, classified within the order Ptychopariida and known from Upper Cambr...

Small North American Ptychopariida Late Cambrian

5.2 Mediocre

17

Chancia

Upper Cambrian trilobite from North America known from Franconian Stage deposits, used in biostratigraphic correlation o...

Small North American Cambrian Ptychopariida

5.0 Mediocre

18

Eurekia

Cambrian trilobite known from deposits in Nevada and other western North American localities, contributing to reconstruc...

Small North American Ptychopariida Late Cambrian

5.0 Mediocre

19

Maryvillia

Maryvillia is a Cambrian trilobite from eastern North America, named after Maryville, Tennessee, where early specimens w...

Small North American Ptychopariida Late Cambrian

4.8 Poor

20

Loganopeltoides

A Cambrian trilobite genus morphologically similar to Loganopeltis, known from Lower to Middle Cambrian deposits in Asia...

North American Cambrian Corynexochida Zone Fossil

4.8 Poor