PAL-EOZOIC. CONCHIFERA. CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
fF Sa * 
Alale|s| s/slele/e@telelareie t 
SPECIES. Ze aig ae 38 alesiy = BS 2 a REFERENCES. 
az /2\E1E|8|5|ElelS |e |e E/BS|3 
MSIleislalS SIS FIFE laipiais 
Sub-Kingdom, MOLLUSCA. 
LAMELLIBRANCHIATA. | 
Class, CONCHIFERA. 
Order, Plewroconcha D’Orb. 
Pelecypoda .,. Goldfuss. 
Group, Monomyaria. 
AVICULIDE. ASIPHONIDA. 
Ambonychia ...... Hall, 1843...... 
— acuticosta ...... ME COY  vicserersfeceferedecs|eccfore|erefece|aeefees * | * | x Brit. Pal. Foss. p. 264, t.1 K, f. 16. 
— carinata ......... (Gf ipe2th ereeeciacd fond [soo (sed lead oe 2] feesPeeeleee|eeedone Hall, Pal. New York, vol. i, p. 294, t. 80, f. 5. Pterinea, 
Goldf, Pet. Germ. vol. ii, p. 136, t. 119, f. 8. 
= CORI, pacepoana 215 coenecndened lect laa feo hse ool [ace Fa (Bacl [ood Inoceramus, Geol. Rept. p. 422, t. 33, f. 5. 
— gryphus ......... POrtl. vc cscsccese|ece]eee[ene|soePere| oes # [ovePoee|eeelecstens Uncites, Geol. Rept. p. 455, t. 25 A, f. 8. 
= TORLED cabcoooascos 2 4015 eandeoodenoe load [pool don fscel [spel looa H JevePeee[ece| eee Geol. Rept. p. 423, t. 33, f£. 1-3. 
= TEI SepeeacesUSINDD  epeeeeEscete load Ihenl esd [ood Heel oe loon IPod Peel eee lock! aaa Vide Cardiola striata. 
— transversa ...... Port lavauese sr raness te pass | (see ees ee | (ee a \Ioad [oon Posidonia, Geol. Rept. p. 423, t. 33, f. 11. 
SP EFIPONA! © cc ctvccss) MAUMEE coon sacesilieal'scc| sasleee [use| (ons Fs! baal ods] long [noel lane Inoceramus, Beitr. heft 3, t. 10, f. 3; ib. Portl. loc. cit. 
p. 422, t. 33, f. 4. | 
seed GIIGOM oc tescenens ISAT “Soacscencbcd (ese see |eee) Bee] (205) loos # |s-]--- Avicula, Mem. Geol. Surv. vol. ii, pt.1, t. 23, £5. Am- | 
bonychia, Siluria, 4 ed. p. 196, Foss. 39, f. 8. 
— undata ......... DER Oe ereincocen) (bol Goo) eed eee) ant Sap ¥3| (seg) ea|eselleae| ese Pal. New York, vol.i, p.165, t. 36, f. 7. Pterinea, Emmons, 
Geol. Rept. 1842, p. 395, f.1. Inoceramus vetustus, Port). 
Geol. Rept. p. 423, t. 33, £. 2, 3. 
AVICULIDE. 
PASVACULA coh esre cree Klein, 1753 ... 
SPEOMIGI A wrceee cue Scopoli, 1777... ASIPHONIDA. 
Monotis ......... Bronn, 1830 ... = : 
— ampliata......... PRA, otis ce stiece Bar| lace] adel febe! jbed lene! load lage ceationa elipailien * Mem. Geol. Surv. vol. ii, pt.1, t. 23, f.1, p. 367. 
— antiqua ......... (CIF “etbandcec| loca sed) see 6eA| edal eect loee, (doc! Heel bet be laoal toe eos Z Petref. Germ. p. 283, t. 160, f. 9. 
— asperul@ ......... 21 AT 80 eee Roce \ecl pel ord feed (ee Ieee ieee (aod jad lose Vide Pterinwa asperula, 
— bullata ......... EXOT] Reopened eel ed kect [bas] faced [deal see (opel Ica ees Ie ae (cel ae Vide Pterinea bullata. 
— Danbyii ......... MECOY crccccsas|\vs|'oes| can] eoe|eer lee see leoel coolers beige a Brit. Pal. Foss. p. 258, t.1 1, f.11-15; ib. Siluria, 4 ed. 
p. 228, Foss. 60, f. 2, 3. 
— lineata ......... WOW sm scecssteds ecel|iaea| = ‘ 84 [cod (50d Ica heed leer loa fae [See |oee| feel eed lac Vide Pterinza lineata. 
— orbicularis...... Bi BX Of The sereeecd Ios fecal aed lode] [sel lecel food foc face eeed lee ioe lord [aoa ier lang) one Vide Pterinza orbicularis. 
— obliqua ......... SOW ie eatacdees ses] con|franl etal seat reales] evellscs | oes llase|aze| za lect earl ee Vide Modiolopsis obliqua. 
eet ABODE OLIMI al PAE COUN aevvevsaa| ser| ce | sec|eae | Ker eee) cee] eee ces | eeellere| (ers |iesel eel nce eee loee Vide Pterinea panopeformis. 
— posidoniaformis M‘Coy .........)... {lesa Boel [seller Papel isd foal eed (ee lot Vide Pterinwa posidonieformis. 
— reticulata ...... Pena sanaiocennealleadl bese Pesellsael lel seel Feel feed We Vide Pterinzea Sowerbyi. 
EON «.<cocecesss SLE ante |e | ees | eee Ie [eee eee ae Vide Ambonychia tritop. - 
— venusta ......... PAS im Sts pee oe ee | eel espe eto | (teal Pee a Posidonia, Beitr. zur : Pet. heft 3, t. 10, f.12; ib. M‘Coy, 
Synop. Sil. Foss. Ivel. p.-21; ib. Portl. Geol. Rept. p. 424, 
AVICULID®. #25 Bob 4- 
Tnoceramus ......... POPKINSONSLSLO |r| (eeel eee oa: [eee (eee ece|leee [eee selene |e : 
— contortus ...,.. W727 epee poEc pend eee oon (Ged [eed eet ood tad ieee] el eee 60 | Vide Ambonychia. 
— trigonus ......... PETC As Pepe nobad oo) ace ee (Jed load [Godlee lace) sel aed [ae pace ie 
— VEtUSEUS ......40. TO becerpaecoode| |ccal |céc|jccal eA \soel [eo] leoal aed be [eel see (ced [abo [ae] onl [Bec [aoe Vide Ambonychia undata. 
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