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The flora and fauna of the silurian period : with addenda (from recent acquisitions) / by John. J. Bigsby
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Gomphoceras.

174

Cephalopoda.

Subdivision.

W., L.Niag.

I Corail. Lst.

1 Tr.

pyrifonne, Sowerby.

Phragmoceras.scrinium, Hall.

Marcyce.

septoris,

subgracile, Billings.

Urceolus, Eichw,

sp. ind., Hall.

Gonioceras, Hall, 1846.anceps, Hall.

Niag.

Pleta .

Pleta( pyroxenic)

Carad.

Pleta ....CS., OH. .L.L.

W. ..

Niag.BL. ..

Pleta

Pleta, Carad., TT.Llandov., W.

Carad.

I Llan. ...BL., Tr.i W.,L. ...

| Tr.

iNiag. ...! Carad. ...

L.L.

i W U.L.

BL., Tr.

H. E. G. ..

Pleta .

; cs.

j Llan.

I Carad., Ut. SI.,H. E. G.

! Queb. G.

Pleta: BL. ..

Genus, Species, andAuthor.

occidentale,

Gyroceras, KonineTc, 18Americanum, Billings.Bannisteri, Winch & Mar,Heloceras, Eichwald, 18

tuberculatum,Hemiceras, Eickwald, 1angulosum, Eichw.

compressum, ,,

cylindricum, ,,

Lituites, Breynius, 1752.anguiformis, Salter.

antiquissimus, Verneuil.Apollo, Billings,

articulatus, Sowerby.

Biddulphi,

capax, Hall,

eonvolvens,

, Schlotli.

cornu-arietis, Sowerby.

Portlock.

var. /?, Salter.

falcatus, Schloth.

Farnsworthii, Billings,

giganteus, Sowerby.

Gouidii, Salter.

Hercules, Winch . & Mar.Hibernicus, Salter.

Holtianus, ?

ibex, Sowerby.

Canada , (New York ) Water-town, Tennessee , Missouri ,N.W. Michigan , (Wiscon­ sin ) Prairie du Chien.Wisconsin .

44.

fiO.

(Esthonia ) Lyckhohn.

840. (A doubtful genus.)Isle Odinsholm (Baltic).

(The Bohemian species areMynydd, Erons, Frys, Llangollen.

(Esthonia ) Isle Dago, Silesia.Mingan Isles (G. St. Lawr.).

imperator,intermedius,iuliformis,magnificum ?,Gyroceras,Odini,

Palinurus,

perfectus,

planorbiformis,

Pluto,

rarospira,

Eobertsoni,

Sowerbyensis,

cornu-arietis.

Billings.

Verneuil.

Salter.

Billings.

Verneuil.

Billings.

Wahlenb.

Conrad.

Billings.

Eichw.

Hall,

DOrb.

Lower Stage.

(N. York) Watertown, EiverKinnikinnickCWisconsin).

(Eussia) St. Petersburg, (Es-thon.)E6val,(Swed.)Uitby,

(S.W. Scotland ) Peebles &c.,(Wales ) Bala Lake, Pres-teign, &c., (Irel.) Desert-create, Coniston (Lan­ cashire ), Isle Dago, B4val,Haljal, DErras (Estho­ nia ), Norway .

(Ireland ) Tyrone.

(Wales ) Denbighshire, Cerrig-y-Druidion.

Eussia.

(Canada East) Phillipsburg.

Tasmania West.

(Ireland ) Kildare.

(Canada East) Phillipsburg.

(Spain ) Almadenejos.

Himalaya , Niti, Chorh. Pass.

Anticosti Island , S.W. end.

Eussia, Isle Odinsholm (Bal-tic).

Mingan Isles (G. St. Lawr.).

Sweden .

(New York ) Lewis County,England, (Wales ) Bala.Cymmerig Eithin (Caer-narvon!.

(Newfoundl. W. N.W.) PointEich.

Efival (Baltic).

Wisconsin .

Llandeilo (Wales ).

Middle Stage.

of the subgenus Opiiioce

(W r ales) Presteign &c.

Upper Stage.

(England) Aymestry, Leint-wardine, Ledbury.Chicago (Illinois ).

Gasp6,Port Daniel (Can.E.).Ural, Eussia, Eiver Ylitsch.South Wisconsin.

Gasp6 (Canada East).Chicago (Illinois ).

ras .J.W.8.)

Ludlow , Aymestry, Shelder-ton (England).

Nant Glyn,Welchpool (W.),Ledbury (Herefordshire ).Wisconsin .

Bogmine, Shelve (Shrop­ shire ).

Leintwardine, Malvern , As-ton (Ludlow ).

Chicago (Illinois ).

Stokesay, Ludlow (England).Ledbury (Herefordsh.), Un-derbarrow,Westmoreland.