swap_horiz Tretaspis Alternatives

1

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

2

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

3

Sphaerexochus

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

European Ordovician Phacopida Cheiruridae

8.1 Great

4

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

5

Trinucleus

An Ordovician trilobite from Britain and Europe distinguished by a broad cephalic fringe covered in a regular pattern of...

Blind British Ordovician Trinucleida

7.8 Good

6

Ampyx

Ampyx is an Ordovician trilobite genus notable for its long glabellar spine extending forward from the cephalon, found i...

European Blind Ordovician Trinucleida

7.5 Good

7

Harpides

Harpides is a Cambrian-Ordovician harpetid trilobite genus characterized by a broad, pitted cephalic fringe similar to t...

European Ordovician Fringed Harpida

7.2 Good

8

Lichas

Ordovician to Devonian trilobite serving as the type genus of order Lichida, recognized by its highly tuberculate, sculp...

European Ordovician Tuberculate Lichida

7.0 Good

9

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

10

Lonchodomas

An Ordovician trilobite known for its elongated frontal or rostral spine, found in Baltic and North American Ordovician...

Blind Scandinavian Ordovician Trinucleida

6.8 Fair

11

Harpecephalus

Devonian harpetid trilobite distinguished by a broad cephalic brim encircling the head shield, known from European and N...

European Ordovician Fringed Harpida

6.5 Fair

12

Dalmanitina

Ordovician trilobite closely related to Dalmanites, known from Europe and North Africa and characterized by schizochroal...

European Ordovician Phacopida Tail Spine

6.5 Fair

13

Onnia

Ordovician trinucleid trilobite distributed across Europe and North Africa, notable for a broad cephalic fringe densely...

Blind Iberian Ordovician Trinucleida

6.5 Fair

14

Ampyx nasutus

Ordovician raphiophorid trilobite distinguished by a prominent forward-projecting rostral spine, found across European a...

European Blind Ordovician Trinucleida

6.5 Fair

15

Eoharpes

Eoharpes is an Ordovician harpetid trilobite, one of the earliest harpetids, known for its broad cephalic brim and found...

European Ordovician Fringed Harpida

6.2 Fair

16

Trinodus

Small Ordovician raphiophorid trilobite found in European strata, notable for its simplified exoskeleton and reduced pyg...

European Blind Ordovician Trinucleida

5.8 Mediocre

17

Marrolithus

Ordovician trinucleid trilobite from European strata, characterized by a wide pitted cephalic fringe and an eyeless ceph...

European Blind Ordovician Trinucleida

5.8 Mediocre

18

Panderia

Ordovician trilobite from Scandinavia and the Baltic region, belonging to superfamily Trinucleoidea and recognized by it...

Blind Scandinavian Ordovician Trinucleida

5.2 Mediocre

19

Crozonaspis

A Devonian trilobite from the Crozon Peninsula of Brittany, France, Crozonaspis is an important zonal fossil for Early D...

Blind Iberian Ordovician Trinucleida

5.0 Mediocre

20

Robergia

Ordovician trilobite from Scandinavian and Baltic strata, a small-bodied raphiophorid genus recognized for its simply st...

Blind Scandinavian Ordovician Trinucleida

5.0 Mediocre