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REX A. DOESCHER - Smithsonian Institution Libraries

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184 SMITHSONIAN CONTRIBUTIONS TO PALEOBIOLOGY<br />

Worobievella Dagys 1°59<br />

Zeilleriacea Allan 1940<br />

Wyatkina Fredericks 1931<br />

StrophaIosiacea Schuchert 1913<br />

Wyella Khodalevich 1939<br />

Pentameracea McCoy 1844<br />

Wyndhamia Booker 1930<br />

Strophalosiacea Schuchert 1913<br />

Wynnia Walcott 1912<br />

Unce r t a i n<br />

Wysogorskiell a Hints 1975<br />

Enteletacea Waaqen 1884<br />

Xana Garcia-A Ica I de 1^72<br />

Stringocepha Iacea King 1850<br />

Xenambonites Cooper 1956<br />

PIectambonitacea Jones 1928<br />

Xenelasma UlrichRCooper 1936<br />

Porambonitacea Davidson 1853<br />

Xenelasmella Rozman 1964<br />

Porambonitacea Davidson 1853<br />

Xenizostrophia Su 1976<br />

Davidsoniacea King 1850<br />

Xenomartinia Havlicek 1953<br />

Reticulariacea Waagen 1883<br />

Xenorthis UlrichRCooper 1936<br />

Bi11ingsel lacea Schuchert 1893<br />

Xenosaria CooperRGrant 1976<br />

Athyridacea McCoy 1P44<br />

Xenospirifer HouRXian 1975<br />

Spiriferacea King 1846<br />

Xenosteges MUir-WoodRCooper 1960<br />

Aulostegacea Muir-WoodRCooper 1960<br />

Xenostrophia Wang 1974<br />

Strophomenacea King 1846<br />

Xenothyris Chinq,RongRSun 1976<br />

Terebratellacea Kinq 1850<br />

Xerospirifer Havlicek 1978<br />

Spiriferacea Kinq 1846<br />

Xerxespirifer Cocks 1979<br />

Spiriferacea King 184 6<br />

Xestosia CooperRGrant 1975<br />

Productacea Gray 1840<br />

Xestotrema CooperRGrant 1969<br />

Spiriferinacea Davidson 1884<br />

Xianqzhonnia NiRYanq 1977<br />

Stringocephalacea King 1850<br />

Xinanorthis Xu,RongRLiu 19 74<br />

Orthacea Woodward 1P52<br />

Xinanospirifer Rong,XuRYanq 1974<br />

Cyrtiacea Fredericks 192 4<br />

Worobievella caucasica Dagys 1959<br />

Triassi c<br />

Aulosteges gigas Netschaew 1894<br />

Permian<br />

Eichwaldia uralica Tschernyschew 1893<br />

Si lurian<br />

Wyndhamia dalwoodensis Booker 1930<br />

Pe rmian<br />

Orthis warthi Waagen 1891<br />

Cambria n<br />

Wysogorskie I I a litviensis Hints 1975<br />

Ordovi c ian<br />

Xana bubo Garcia-AIcald? 1972<br />

Devonian<br />

Xenambonites undosus Cooper 1956<br />

Ordovician<br />

Xenelasma syntrophioides UlrichRCooper 1936<br />

Ordovician<br />

Xenelasmella graci^sa Roznan 1964<br />

Ordovi c ian<br />

X en i z ost r oph i a spinosa Su 1976<br />

Devonian<br />

Xenomartinia monosepta Havlicek 1953<br />

Devonian<br />

Strophomena stosei Bassler 1919<br />

Cambrian-Ordovician<br />

Xenosaria exotica CooperRGrant 1976<br />

Permian<br />

Spirifer fongi Grabau 1931<br />

Devonian<br />

Xenosteges adherens Muir-WoodRCooper 1960<br />

Pe rmian<br />

Shaleria yukiangensis Wang 1956<br />

De voni a n<br />

Xenothyris tuilaensis Ching,RongRSun 1976<br />

C r e t ac e ous<br />

Xerospirifer excelsus Havlicek 107;<br />

Devonian<br />

X er x e s pi r i f e r iranicus Cocks 1979<br />

Si lurian<br />

Xestosia obsolescens CooperRGrant 1975<br />

Permian<br />

Spirifera pulchra Meek 1860<br />

Pe rmian<br />

Xianqzhonnia typica NiRYang 1977<br />

Devoni an<br />

Xinanorthis striata Xu,RongRLiu 1974<br />

Ordovician<br />

Xinanosoirifer flabellun Rong,XuRYang 1974<br />

Si lurian

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