swap_horiz Bristolia 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

Phacops is a Devonian trilobite species originating from North America. It’s notable for its unique schizochroal eyes, c...

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

Olenellus

An Early Cambrian trilobite from North America and Greenland that lacks facial sutures and defines the Olenellus biozone...

North American Primitive Early Cambrian Olenellida

7.5 Good

9

Elrathia

A Middle Cambrian trilobite from the Wheeler Shale of Utah, USA, so abundantly preserved that it is among the most comme...

Utah North American Cambrian Abundant

7.5 Good

10

Flexicalymene

An Ordovician trilobite abundant in the Cincinnati region of the USA, frequently preserved enrolled and found in great n...

North American Ordovician Phacopida Enrolled

7.5 Good

11

Zacanthoides

A Middle Cambrian trilobite from the Burgess Shale and related North American deposits, notable for prominent spination...

North American Spiny Cambrian Corynexochida

7.5 Good

12

Redlichia

An Early Cambrian trilobite from Australia and Asia that serves as an index fossil for lower Cambrian deposits, with a d...

Asian Gondwana Redlichiida Early Cambrian

7.0 Good

13

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

14

Callavia

An early Cambrian olenellid trilobite from Newfoundland, Canada, namesake of the Callavia biozone and a key marker for l...

North American Primitive Redlichiida Early Cambrian

6.5 Fair

15

Holmia

An early Cambrian trilobite from Scandinavia, namesake of the Holmia biozone used to correlate lower Cambrian strata acr...

Scandinavian Primitive Early Cambrian Olenellida

6.5 Fair

16

Wanneria

An Early Cambrian olenellid trilobite from North America, among the earliest trilobites recorded in the fossil sequence...

North American Primitive Early Cambrian Olenellida

6.2 Fair

17

Nephrolenellus

Early Cambrian olenellid trilobite from western North America, distinguished by its elongated axial lobe and reduced pyg...

North American Primitive Early Cambrian Olenellida

6.2 Fair

18

Kjerulfia

An early Cambrian trilobite from Norway and Sweden, known from lower Cambrian deposits of Scandinavia and associated wit...

Scandinavian Primitive Early Cambrian Olenellida

6.0 Fair

19

Mesonacis

Early Cambrian olenellid trilobite known from North America and Greenland, characterized by a distinct glabellar structu...

North American Primitive Redlichiida Early Cambrian

6.0 Fair

20

Paedeumias

Middle Cambrian ptychopariid trilobite from North America, known from deposits in the western United States and Canada.

North American Primitive Early Cambrian Olenellida

5.0 Mediocre