AMONG MY TRILOBITES THE ORDOVICIAN
PART 2
TO LEARN MORE ABOUT EACH ORDER OF TRILOBITES, CLICK ON
IT'S NAME. THIS WILL TAKE YOU TO SAM GON'S WEBSITE FOR A
DESCRIPTION. USE YOUR BROWSER'S BACK BUTTON TO RETURN
TO THIS PAGE.LICHIDA ORDER
Superfamily: Lichoidea
Family: Lichidae
4.8cm Laba River; St. Petersburg, Russia
5.1cm St. Petersburg, Russia
Superfamily: Odontopleuroidea
Family: Odontopleuridae
1.3cm Fulton Member, Cincinnatian Series, Kope Formation; Hamilton County, Ohio
6.5 cm total Morocco
PHACOPIDA ORDER
Suborder: Calymenina
Family: Calymenidae
9.5cm Al-nif formation; Morocco
2.5cm UK
1.8cm Ashgill Series, Pusgillan Stage, Ddolhir Beds,
Cynwyd Forest, Clwyd, Wales
Suborder: Phacopina
Family: Dalmanitidae
2.3cm Portugal
Suborder: Cheirurina
Family: Cheiruridae
4.5cm Trenton formation; Quebec City, Quebec
9cm total (tail spines 3cm) Volchow River; St. Petersburg, Russia
Family: Encrinuridae 
3.7cm (+eye: 1cm) St. Petersburg, Russia
1.7cm Utah
CORYNEXOCHIDA ORDER
Suborder: Illaenina
Family: Illaenidae
10cm Valongo, Portugal (shows metamorphic distortion)
4.3cm Volchow River; St. Petersburg, Russia
7.5cm Wolchow River; St Petersburg, Russia
PTYCHOPARIDIA ORDER
Suborder: Olenina
Family: Olenidae
2.7cm Utica Shale; Little Falls, New York
2.2cm Billings formation; Ottawa, Ontario
PROETIDA ORDER
Superfamily: Bathyuroidea
Family: Bathyuridae
2.7cm Bobacaygeon formation; Aylmer, Quebec
To see the Home Page
To see the Cambrian Period Part 1: Agnostida and Redlichiida
To see the Cambrian Period Part 2: Ptychopariida
To see the Cambrian Period Part 3: Asaphida, Corynexochida and Friends
To see the Ordovician Period Part 1 Asaphida
To see the Silurian Period
To see the Devonian Period Part 1 : Lichida, Corynexochida, Proetida and Harpetida
To see the Devonian Period Part 2: Phacopida.
To see the Carboniferous Period, the Permian Period, some Trilo-trivia and Links
