Jump to content

Trilobites of Ontario - Taxonomic List


Kane

Recommended Posts

This is a work in progress, a kind of "master list" of trilobite species found in Ontario according to the available literature. In some cases, stratigraphy and taxonomic names have been modernized. Correlations are added where it is expected that species found in equivalent strata could be found in Ontario rocks. I have not included trilobites from the Hudson/James Bay area as there are a number of species there that still are in need of formal description. There are also a number of uncertainties that require more literature support before they are included here. I'll update this as more resources come available.

 

UPDATED: Sept 15, 2019

 

 

Period

Formation/Member

Taxon

Correlated Species

Devonian

Kettle Point (1)

Eldredgeops rana

 

 

Widder (upper) (6)

Greenops widderensis

Eldredgeops rana

Pseudodechenella ?rowi

Dipleura dekayi

Crassiproetus canadensis

Bellacartwrightia jennyae

 

 

Widder (Hungry Hollow) (5)

Greenops widderensis

Eldredgeops rana

Eldredgeops iowensis southworthi

Pseudodechenella arkonensis

Crassiproetus canadensis

 

 

Arkona (3)

Stummiana arkonensis

Eldredgeops rana

Pseudodechenella arkonensis

 

 

Dundee (8)

Coronura aspectans

Coronura myrmecophorus

Trypaulites calypso

Crassiproetus crassimarginatus

Eldredgeops rana

Pseudodechenella planimarginata

Pseudodechenella rowi

Odontocephalus selenurus

Crassiproetus sibleyensis (Michigan)

Pseudodechenella nodosa (Ohio)

 

Lucas (1)

Crassiproetus crassimarginatus

 

 

Amherstburg (5)

Acanthopyge contusa

Mannopyge Halli

Mystrocephala stummi

Crassiproetus crassimarginatus

Harpidella sp. 

Coniproetus folliceps (New York)

 

Bois Blanc (8)

Terataspis grandis

Anchiopsis anchiops

Burtonops cristata

Crassiproetus crassimarginatus

Pseudodechenella planimarginata

Otarion sp. 

Calymene platys

Trypaulites erinus

 

Silurian

Guelph (2)

Bumastus ioxus

Bumastus aboynensis

 

 

Eramosa (1)

Encrinurus ornatus

 

 

Amabel (8)

Calymene niagarensis

Calymene sp.

Kosovopeltis acamus

Planiscutellum rochesterense

Ekwanoscutellum ekwanensis 

Hadromeros niagarensis

Bumastus ioxus

Sphaerexochus romingeri

 

 

Rochester (8)

Dicranopeltis fragosa

Dalmanites limulurus

Trimerus delpinocephalus

Arctinurus boltoni

Calymene niagarensis

Calymene sp.

Liocalymene clintoni

Bumastus ioxus

Decoroproetus corycoeus (New York)

Diacalymene sp. (New York)

Illaenus insignis (New York)

Radnoria bretti (New York)

 

Fossil Hill (1)

Bumastus ioxus

 

 

Cataract (5)

Acernaspis spp.

Leonaspis cf. illinoiensis

Calymene niagarensis

Calymene sp.

Liocalymene clintoni

 

Ordovician

Georgian Bay (7)

Ceraurus sp.

Ceraurinus sp.

Cryptolithus bellulus

Flexicalymene granulosa

Proetus chambliensis (Carlsbad Fm)

Isotelus maximus

Triarthrus sp.

 

 

Blue Mountain/Billings (11)

Ceraurus sp.

Cryptolithus bellulus

Isotelus sp.

Flexicalymene sp.

Pseudogygites latimarginatus

Sphaerocorphye robusta

Triarthrus canadensis

Triarthrus eatoni

Triarthrus glaber

Triarthrus rougensis

Triarthrus spinosus

 

 

Lindsay (28)

Amphiichas ottawaensis 

Anataphrus sinclairi 

Calyptaulax callicephalus 

Ceraurinella trentonensis 

Ceraurinus marginatus

Ceraurinus serratus 

Ceraurus matranseris 

Ceraurus milleranus 

Cryptolithus sp. 

Eobronteus sp. 

Erratencrinurus vigilans 

Failleana indeterminata 

Flexicalymene croneisi 

Flexicalymene senaria

Hibbertia ottawaensis 

Hypodicranotus strialatus

Isotelus latus

Isotelus “mafritzae” ( A & B )

Isotelus ottawaensis

Leviceraurus mammiloides

Meadowtownella trentonensis

Otarion laurentinum

Physemataspis pernodosus

Pseudogygites latimarginatus

Sceptasps lincolnensis

Thaleops depressicapitata

Thaleops latiaxiata

Thaleops laurentiana

 

 

Verulam (41)

Achatella achates

Amphilichas ottawaensis

Anataphrus sinclairi

Bathyrus (Raymondites) ingalli

Bufoceraurus bispinosus

Bumastoides bellevillensis

Bumastoides billingsi

Bumastoides milleri

Calyptaulax callicephalus

Ceraurus globulobatus

Ceraurus milleranus

Ceraurus plattinensis

Ceraurus pleurexanthemus

Ceraurinella sp.

Ceraurinella trentonensis

Cybeloides plana

Cyphoproetus wilsonae

Dimeropyge gibbus

Dolichoharpes reticulata

Ectenaspis homalonotoides

Eobronteus sp.

Eomonorachus intermedius

Erratencrinus vigilans

Failleana indeterminata

Flexicalymene senaria

Gabriceraurus dentatus

Hemiarges leviculus

Hemiarges paulianus

Hibbertia ottawaensis

Hypodicranotus striatulus

Isotelus gigas

Isotelus iowensis

Isotelus ottawaensis

Kawina trentonensis

Meadowtownella trentonensis

Otarion laurentinum

Physemataspis pernodosus

Sceptaspis lincolnensis

Sphaerocoryphe robusta

Thaleops ovata

Thaleops laurentiana

 

 

Bobcaygeon (32)

Amphilichas ottawaensis

Apianurus sp.

Bathyrus (Raymondites) ingalli

Bathyrus (Raymondites) trispinosus

Bufoceraurus bispinosus

Bumastoides milleri

Calyptaulax callicephalus

Ceraurus globulobatus

Ceraurus plattinensis

Ceraurus pleurexanthmeus

Ceratocephala sp.

Ceraurinella sp.

Ceraurinella trentonensis

Cybeloides plana

Cyphoproetus wilsonae

Diacanthaspis parvula

Dolichoharpes reticulate

Ectenaspis homalonotoides

Eomonorachus intermedius

Erratencrinus vigilans

Failleana indeterminata

Flexicalymene senaria

Gabriceraurus dentata

Hemiarges paulianus

Isotelus gigas

Isotelus iowensis

Meadowtownella trentonensis

Physemataspis pernodosus

Sceptaspis lincolnensis

Thaleops conradi

Thaleops ovata

Thaleops laurentiana

 

 

Gull River (20)

Basiliella barrandei

Bathyurus acutus

Bathyurus extans

Bathyurus johnstoni

Bathyurus superbus

Bathyurus (Raymondites) bandifer

Bathyurus (Raymondites) longispinus

Bumastoides billingsi

Bumastoides milleri

Bumastoides porrectus

Calyptaulax callicephalus

Ceraurus sp.

Cybeloides ella

Cybeloides plana

Failleana indeterminata

Isotelus sp.

Thaleops angusticollis

Thaleops conradi

Thaleops latiaxiata

Thaleops ovata

 

 

Oxford (5)

Gignopeltis convexus

Gignopeltis rarus

Goniotelina subrectus

Isoteloides canalis

Strotactinus salteri

 

 

SPECIES TOTAL:

~132

 

 

 

 

  • I found this Informative 2
Link to post
Share on other sites

Nice effort.  :dinothumb:  This list will be useful for anyone wanting to assess how complete their collection of Ontario trilobites is, and what formation to target for particular species.

 

If you want to include the Ottawa area in Ontario, the Carlsbad Formation (which is equivalent to the Georgia Bay) includes Proteus chambliensis in addition to the species in your list.  The fauna is quite similar to that found at the LaPrarrie tile yard near Montreal.  There is a calymenid found there that I have seen listed as "Gravicalymene undescribed species".  I have several calymenids from the Carlsbad but I have to check them to see if they are Flexicalymene, Gravicalymene, or if both genera are present.

 

Don

  • I found this Informative 1
Link to post
Share on other sites

Thanks, Don. :fistbump: I've included it in the list, although I can't find much more than a whisper of its mention elsewhere beyond two articles by A.F Foerste in 1916 and 1924 (doesn't seem to have been updated since). I don't have an example of that one, but do have two of the undescribed Gravicalymene from Montreal.

 

I should mention that more than half of these are indeed rare, a good handful or more known only as fragments. I wouldn't want collectors in Ontario to think they will be able to pop open a few rocks and find them all. :P  I did toy with assigning a "rarity scale" of some kind, but would prefer a volumetric analysis -- and that would very much depend on having access to a significant source of rock for all these formations for a viable sample, some of which do not outcrop in a significant way or access is highly restricted. Looking over my own collection, I consider myself somewhat lucky to have about 24 of the 132 distinct species on that list, with more in the Devonian due to proximity and circumstance.

Link to post
Share on other sites

Kane, are you adding to your list well documented finds of trilobites by TFF members and others that have not been mentioned in the literature? I would be surprised if you did not find any.

 

 

 

Link to post
Share on other sites
10 minutes ago, DPS Ammonite said:

Kane, are you adding to your list well documented finds of trilobites by TFF members and others that have not been mentioned in the literature? I would be surprised if you did not find any.

 

 

 

No, as that can be too anecdotal. Confirmation from the peer reviewed literature is the gold standard in order to ensure the reliable legitimacy of the list. There may be an occasion to add such entries, but with a qualifying asterisk to say that it has yet to be officially confirmed. 

Link to post
Share on other sites

Awesome list Kane... now the natural extention of this list will be for you to acquire one of each..... say goodbye to your paycheck for the foreseeable future

Link to post
Share on other sites
3 minutes ago, Malcolmt said:

Awesome list Kane... now the natural extention of this list will be for you to acquire one of each..... say goodbye to your paycheck for the foreseeable future

I just need to buy a few quarries and I'll be set. :D 

Link to post
Share on other sites
  • 1 year later...

This list will be updated shortly, onboarding some revisions and providing a species count by formation/age. It will also be sortable in a .doc format, but not so in .pdf format. I am just in the process of compiling the northern Ontario trilobite fauna, which will be set apart from the southern faunal list (northern = anything north of Manitoulin Island, and under a different stratigraphic nomenclature). 

Link to post
Share on other sites

Current draft. I am just waiting on some other leads to complete the northern lists.

 

UPDATE Feb 22: quick fixes, and a few more northern Silurian entries.

 

TriloMasterOnt.pdf

Link to post
Share on other sites

Awesome job Kane....darn someone beat me to downloading it.......... Wondering did you talk with Bill directly when compiling this

Link to post
Share on other sites

Thanks, Malcolm. :) I'm hoping to improve upon the northern faunal list as there are some "mislabels" (for instance, Vogel's "Dalmanites" would not appear in the Devonian, and is likely an Anchiopsis given the close correlation with Bois Blanc Fm fauna). 

 

I did talk with Bill over the last few months. He had some Devonian fragments to show me that he was unsure about. 

Link to post
Share on other sites

Swisher et al. 2015 classified the following species from Ontario with a subgeneric rank: Bathyurus (Raymondites) bandifer, ingalli, longispinus, trispinosus. They also report B. (R.) clochensis and B. (R.) spinger from Ontario. More recently, Boyce 2020 classified them with the distinct generic rank of Raymondites. The concept and application of subgenera/subspecies always seems to be an exercise in confusion and hairsplitting. A Raymondites by any other name... mail?url=http%3A%2F%2Fmail.yimg.com%2Fok%2Fu%2Fassets%2Fimg%2Femoticons%2Femo11.gif&t=1613928511&ymreqid=23281213-8dc1-3cff-1c55-440003018400&sig=eYOzyItdWznp1HE2gOz0cA--~D mail?url=http%3A%2F%2Fmail.yimg.com%2Fok%2Fu%2Fassets%2Fimg%2Femoticons%2Femo12.gif&t=1613928511&ymreqid=23281213-8dc1-3cff-1c55-440003018400&sig=VcMb_JDq0xqA3ffv_lp6Gw--~D

 

Boyce, W.D. 2020

Bathyurus perplexus Billings, 1865: Distribution and Biostratigraphic Significance.

Newfoundland and Labrador Department of Natural Resources, Geological Survey, Current Research Report, 20(1):1-27  PDF LINK

 

Swisher, R.E., Westrop, S.R., Amati, L. 2015

The Upper Ordovician Trilobite Raymondites Sinclair, 1944 in North America.

Journal of Paleontology, 89(1):110-134  PDF LINK

Link to post
Share on other sites

Aye, thanks Scott! I was hesitant to emplace the subgenus, and it is really a kind of bizarre, frustrating situation! A Raymondites by any other name indeed! :D 

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...