swap_horiz Hydrocephalus Alternatives

1

Elrathia kingi

Elrathia kingi is a common trilobite fossil discovered primarily in the Middle Cambrian Wheeler Shale of Utah. It repres...

Utah Cambrian Abundant Ptychopariida

9.2 Excellent

2

Olenoides serratus

Olenoides serratus is an iconic trilobite species dating back to the Cambrian period. Found within the Burgess Shale of...

Iconic Cambrian Burgess Shale Corynexochida

9.0 Excellent

3

Naraoia

Soft-bodied Cambrian arthropod from the Burgess Shale of British Columbia, Canada, lacking a mineralized exoskeleton and...

Cambrian Burgess Shale Soft Bodied Bivalved

8.5 Great

4

Paradoxides davidis

A large Middle Cambrian trilobite from Wales, one of the earliest trilobite species formally described from the British...

Large British Cambrian Redlichiida

8.5 Great

5

Paradoxides

A large Middle Cambrian trilobite serving as a key global biostratigraphic index fossil, with specimens exceeding 50 cm...

Iconic Large Bohemian Cambrian

8.2 Great

6

Kootenia burgessensis

A Middle Cambrian trilobite species from the Burgess Shale of British Columbia, Canada, described by Charles Walcott and...

Canadian Cambrian Burgess Shale Corynexochida

8.0 Great

7

Olenoides

A Middle Cambrian trilobite best known from the Burgess Shale of British Columbia, Canada, where exceptional preservatio...

Canadian Cambrian Burgess Shale Corynexochida

7.8 Good

8

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

9

Ogygopsis

A Middle Cambrian trilobite common in the Burgess Shale of British Columbia, Canada, and one of the most frequently enco...

Canadian Cambrian Asaphida Burgess Shale

7.5 Good

10

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

11

Acadoparadoxides

A large Cambrian trilobite genus of the Acado-Atlantic faunal province, with species from Morocco and Iberia reaching am...

Large Moroccan Cambrian Redlichiida

7.5 Good

12

Trilobites walcotti

A trilobite species named in honor of Charles Doolittle Walcott (1850–1927), the American paleontologist renowned for di...

Iconic Historical Cambrian Ptychopariida

7.5 Good

13

Conocoryphe

Middle Cambrian trilobite notable for the complete absence of eyes, abundant in Bohemian and Iberian Cambrian deposits a...

Blind Bohemian Cambrian Ptychopariida

6.8 Fair

14

Protolenus

An early Cambrian trilobite found in Moroccan and Iberian deposits, belonging to the paradoxidid-related group and used...

Moroccan Primitive Redlichiida Early Cambrian

6.5 Fair

15

Eccaparadoxides

Cambrian paradoxidid trilobite closely related to Paradoxides, known from Gondwanan terranes and used to trace dispersal...

Iberian Cambrian Redlichiida Zone Fossil

6.5 Fair

16

Ellipsocephalus

A Cambrian trilobite genus first described from Bohemia by Joachim Barrande; its type species Ellipsocephalus hoffi is a...

Smooth Bohemian Cambrian Ptychopariida

6.5 Fair

17

Ptychoparia

Middle Cambrian trilobite from Bohemia that serves as the type genus of order Ptychopariida, one of the most taxonomical...

Bohemian Cambrian Ptychopariida Ptychopariidae

6.0 Fair

18

Sao

Cambrian trilobite from Bohemia described by Joachim Barrande in his landmark 19th-century monograph on Silurian fauna,...

Small Bohemian Cambrian Ptychopariida

5.8 Mediocre

19

Agraulos

A Cambrian ptychopariid trilobite described by Barrande in 1846, Agraulos is known primarily from Middle Cambrian deposi...

Small Bohemian Cambrian Ptychopariida

5.5 Mediocre

20

Yunnanocephalus

A Cambrian trilobite genus from Yunnan Province, China, known from Early to Middle Cambrian strata and representative of...

Chinese Primitive Cambrian Redlichiida

5.5 Mediocre