2.5 mi N of Formosa, highway road cut: Eifelian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Favositida - Favositidae
Emmonsia emmonsi
Emmonsia cf. bacula
originally entered as "Emmonsia cf. bacula"
Emmonsia radiciformis
Emmonsia cf. rectangularis
originally entered as "Emmonsia cf. rectangularis"
Favosites goldfussi Lecompte 1939
Anthozoa - Favositida - Pachyporidae
Thamnopora limitaris
Cladopora cryptodens
? Cladopora sp. Hall 1851
originally entered as "? Cladopora sp."
Cladopora labiosa (Billings 1859)
Anthozoa - Auloporida - Syringoporidae
Syringopora hisingeri Billings 1858
Anthozoa - Stauriida - Siphonophrentidae
Siphonophrentis gigantea
Anthozoa - Stauriida - Amplexidae
? Heterophrentis sp. Billings 1875
originally entered as "? Heterophrentis sp."
Anthozoa - Stauriida - Pycnostylidae
Depasophyllum cf. adnetum
originally entered as "Depasophyllum cf. adnetum"
? Depasophyllum sp. Grabau 1936
originally entered as "? Depasophyllum sp."
Anthozoa - Stauriida - Stauriidae
? Placophyllum sp. Simpson 1900
originally entered as "? Placophyllum sp."
Anthozoa - Stauriida - Halliidae
Blothrophyllum sp. Billings 1859
Anthozoa - Stauriida - Eridophyllidae
Eridophyllum seriale Milne-Edwards and Haime 1850
Cylindrophyllum cf. elongatum
originally entered as "Cylindrophyllum cf. elongatum"
Cylindrophyllum cf. propinquum
originally entered as "Cylindrophyllum cf. propinquum"
Acinophyllum mclareni
n. sp.
Anthozoa - Stauriida - Zaphrentidae
Heliophyllum cf. incrassatum
originally entered as "Heliophyllum cf. incrassatum"
Heliophyllum cf. verticale
originally entered as "Heliophyllum cf. verticale"
Heliophyllum sp. Hall 1846
Anthozoa - Stauriida - Disphyllidae
Disphyllum sp. Fromentel 1861
sp. A
Disphyllum sp. Fromentel 1861
sp. B
Anthozoa - Cystiphyllida - Cystiphyllidae
Cystiphylloides sp. (Chapman 1893)
Stromatoporoidea - Stromatoporellida - Stromatoporellidae
Stictostroma mccannelli
n. sp.
Stictostroma longitubiferum
n. sp.
Stromatoporoidea - Clathrodictyida - Anostylostromatidae
Anostylostroma arvense
Anostylostroma arvense
ssp. densilaminatum, n. ssp.
Stromatoporoidea - Stromatoporida - Stromatoporidae
Stromatopora proxilaminata
n. sp.
Stromatopora densilaminata
n. sp.
Stromatoporoidea - Syringostromatida - Syringostromatidae
Syringostroma probicrenulatum
n. sp.
Syringostroma sherzeri
Syringostroma cylindricum
n. sp.
Syringostroma ambiguum
n. sp.
Gastropoda - Murchisoniina - Gosseletinidae
? Mourlonia sp. de Koninck 1883
originally entered as "? Portlockiella sp."
Mourlonia confertinemilata n. sp. Fagerstrom 1961
recombined as Pleurorima confertinemilata
Gastropoda - Murchisoniina
    = Murchisonioidea indet. Koken 1896
Wagner 2023
Gastropoda - Murchisoniina - Hormotomidae
Murchisonia (Hormotomina) linsleyi n. sp. Fagerstrom 1961
recombined as Hormotomina linsleyi
Gastropoda - Archaeogastropoda
Archaeogastropoda sp. Thiele 1925
was Pleurotomaria; PJW3 [entered as Archaeogastropod sp.]
Gastropoda - Bellerophontida
Bellerophon sp. de Montfort 1808
    = informal Bellerophontoidea indet. M'Coy 1851
Wagner 2023
corrected as Bellerophontoidea
could be Coelocyclus....
Gastropoda - Euomphalina - Elasmonematidae
Elasmonema bellatulum (Hall 1861)
recombined as Elasmonema bellatula
Gastropoda - Euomphalina - Euomphalidae
Straparolus minutilineatus n. sp.
original and current combination Straparollus
Gastropoda - Euomphalina - Platyceratidae
Platyceras sp. Conrad 1840
Platyceras cf. ammon Hall 1862
Platyceras carinatum Hall 1862
Platyceras cf. erectum (Hall 1843)
Platyceras dumosum Conrad 1840
recombined as Spinyplatyceras dumosum
cf. rarispinum
Bivalvia - Sanguinolitidae
Sanguinolites sp. M'Coy 1844
Bivalvia - Mytilida - Mytilidae
? Mytilidae indet. Rafinesque 1815
Genus A sp. A - originally entered as "? Mytilidae indet."
Bivalvia - Pectinida - Pterinopectinidae
Pterinopecten insons
Paragastropoda - Mimospirida - Clisospiridae
? Procrucibulum sp. Perner 1903
Cephalopoda - Nautilida - Rutoceratidae
Goldringia cf. citum
Cephalopoda - Oncocerida - Brevicoceratidae
? Exocyrtoceras sp. Flower 1938
Exocyrtoceras minutum Flower 1945
Cephalopoda - Orthocerida - Dawsonoceratidae
? Dawsonoceras cf. americanum
Rostroconchia - Conocardiida - Bransoniidae
Conocardium sp. Bronn 1835
?Mulceodens sibleyense
    = Mulceodens ? sibleyense La Rocque 1950
Wagner 2023
Rostroconchia - Conocardiida - Hippocardiidae
Conocardium ohioense Meek 1871
recombined as Hippocardia ohioense
Conocardium cuneus (Conrad 1840)
recombined as Hoareicardia cunea
Strophomenata - Productida - Productellidae
Spinulicosta navicella (Hall 1857)
Strophomenata - Strophomenida - Strophodontidae
Megastrophia sp. Caster 1939
sp. B
Megastrophia (Megastrophia) proxicostellata
subgn. (Megastrophia); n. sp.
Strophodonta homolostriata
corrected as Strophomena (Strophodonta)
Pholidostrophia nacrea
Strophomenata - Strophomenida - Leptostrophiidae
Rhytistrophia cooperi
spelled with current rank as Leptostrophia (Rhytistrophia)
n. sp.
Strophomenata - Strophomenida - Douvillinidae
Cymostrophia sp. Caster 1939
sp. A
Strophomenata - Orthotetida - Schuchertellidae
Schuchertella varicostata n. sp.
Rhynchonellata - Pentamerida - Clorindidae
Pentamerella pavilionensis
Pentamerella grandis
n. sp.
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria propinqua
Rhynchonellata - Spiriferida - Spiriferidae
Spirifer informal sp. A Sowerby 1818
Spirifer informal sp. B Sowerby 1818
Rhynchonellata - Spiriferida - Ambocoeliidae
Metaplasia uniplicata n. sp.
Rhynchonellata - Spiriferida - Elythidae
Elytha formosensis n. sp.
synonym of Elita
Rhynchonellata - Spiriferida - Hysterolitidae
Fimbrispirifer tricostatus n. sp.
Fimbrispirifer divaricatus (Hall 1857)
Rhynchonellata - Spiriferida - Cyrtinopsidae
Kozlowskiellina (Megakozlowskiellina) submersa
Rhynchonellata - Athyridida - Meristidae
Camarospira sp.
Rhynchonellata - Athyridida - Meristellidae
Meristella nasuta (Conrad 1842)
recombined as Meristina nasuta
Meristella barrisi
Meristella formosensis n. sp.
Meristella subrotunda n. sp.
Rhynchonellata - Athyridida - Athyrididae
Athyris cora
Athyris minuta n. sp.
Rhynchonellata - Terebratulida - Cryptonellidae
Cryptonella lens
Rhynchonellata - Terebratulida - Cranaenidae
Cranaena romingeri (Hall 1863)
Rhynchonellata - Atrypida - Atrypidae
Atrypa informal sp. A Dalman 1828
Atrypa informal sp. B Dalman 1828
Rhynchonellata - Rhynchonellida - Stenoscismatidae
Stenoscisma sp. Conrad 1839
Stenoscisma halli n. sp. Fagerstrom 1961
recombined as Atribonium halli
Stenoscisma rhomboidalis Fagerstrom 1961
recombined as Atribonium rhomboidale
Rhynchonellata - Rhynchonellida - Camarotoechiidae
Camarotoechia formosensis n. sp.
Camarotoechia lamellosa n. sp.
Camarotoechia tethys (Billings 1860)
Stenolaemata - Cystoporata - Fistuliporidae
Fistulipora sp. McCoy 1850
Stenolaemata - Cryptostomata - Semicosciniidae
Semicoscinium sp. Prout 1859
Stenolaemata - Cryptostomata - Fenestellidae
Fenestella cf. parallela
originally entered as "Fenestella cf. parallela"
Stenolaemata - Cryptostomata - Acanthocladiidae
Polypora sp.
Stenolaemata - Cystoporida - Sulcoreteporidae
? Sulcoretepora sp.
originally entered as "? Sulcoretepora sp."
Trilobita - Lichida - Lichidae
Echinolichas parallelobatus n. sp. Fagerstrom 1961
Acanthopyge contusa (Hall and Clarke 1888)
Ludvigsen 1987
recombined as Belenopyge contusa
was Echinolichas parallelobatus n. sp.
Trilobita - Proetida - Proetidae
Proetus (Crassiproetus) crassimarginatus (Hall 1843)
recombined as Crassiproetus crassimarginatus
subgn. (Crassiproetus)
Crassiproetus crassimarginatus (Hall 1843)
Ludvigsen 1987
was: Proetus (Crassiproetus), ssp. brevispinosus, n. ssp.
Mannopyge halli (Stumm 1953)
Ludvigsen 1987
recombined as Monodechenella halli
gen. nov.; was: Dechenella (Dechenella) ? halli
Dechenella (Basidechenella) formosensis Fagerstrom 1961
synonym of Monodechenella halli
subgn. (Basidechenella)
Trilobita - Proetida - Brachymetopidae
Mystrocephala stummi Fagerstrom 1961
n. sp.
Trilobita - Proetida - Aulacopleuridae
Harpidella sp. M'Coy 1849
Ludvigsen 1987
see common names

Geography
Country:Canada State/province:Ontario County:Bruce
Coordinates: 44.0° North, 81.3° West (view map)
Paleocoordinates:37.0° South, 27.7° West
Basis of coordinate:based on political unit
Geographic resolution:outcrop
Time
Period:Devonian Epoch:Middle Devonian
Stage:Eifelian 10 m.y. bin:Devonian 3
*Period:Middle Devonian
*International age/stage:Emsian *Local age/stage:Onondagan
Key time interval:Eifelian
Age range of interval:393.30000 - 387.70000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Amherstburg Member:Formosa Reef Limestone
Stratigraphic resolution:member
Stratigraphy comments: "This outcrop has been designated the type section of the Formosa Reef Limestone and has previously been described and illustrated by Stauffer (1915) under the name "Bruder's lime kiln." The present owner of the property adjacent to the road cut, Wm. E. Merchant...said that...the land had never been owned or leased by anyone named Bruder nor had anyone by that name ever operated a quarry or lime kiln at this locality. [From] Stauffer's photograph...[the writer was able to locate landmarks, thus this is the same spot]...Stumm (1951)...[called the place Marchand Quarry]...the name must have arisen by confusion [with Merchant's name]."
JA: originally entered as Emsian, but the Formosa Reef Limestone is Eifelian (see Edinger et al. 2002)
Lithology and environment
Primary lithology:gray lithified "reef rocks"
Secondary lithology: lime mudstone
Environment:reef, buildup or bioherm
Geology comments: "The bulk of the reef comprises poorly bedded stromatoporoidal boundstone and minor coralline boundstone in a matrix of lime mudstone and wackestone. [Ludvigsen, 1986]."
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Also known as:Fagerstrom #6
Database number:3845
Authorizer:J. Alroy, P. Wagner, M. Hopkins Enterer:M. Sommers, M. Hopkins, P. Wagner
Modifier:J. Alroy Research group:marine invertebrate
Created:1999-08-10 21:42:24 Last modified:2012-08-20 06:16:14
Access level:the public Released:1999-08-10 21:42:24
Creative Commons license:CC BY
Reference information

Primary reference:
257. J. A. Fagerstrom. 1961. The fauna of the Middle Devonian Formosa Reef Limestone of southwestern Ontario. Journal of Paleontology 35(1):1-48 [J. Alroy/M. Sommers/J. Alroy]

Secondary references:

264 R. Ludvigsen. 1987. Reef trilobites from the Formosa Limestone (Lower Devonian) of Southern Ontario. Canadian Journal of Earth Sciences 24:676-688 [J. Alroy/M. Sommers/M. Uhen]
9042 P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]