قائمة أجناس الذراعيات الأرجل
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|  Cacemia  Cactosteges  Cadomella  Cadudium  Caenanoplia  Caenotreta  Caeroplecia  Calcirhynchia  Caledorhynchia  Callaiaspida  Callicalyptella  Calliglypha  Calliomarginatia  Callipentamerus  Callipleura  Calliprotonia  Callispirifer  Callispirina  Calloria  Callospiriferina  Callytharrella  Calpella  Calvinaria  Calvirhynchia  Calvustrigis  Calyptolepta  Calyptoria  Camarelasma  Camarium  Camarophorella  Camarophorina  Camarophorinella  Camarospira  Camarothyridina  Camarotoechia  Camarotoechiodes  Cambrotrophia  Camerella  Camerisma  Camerophorina  Camerothyris  Campages  Campylorthis  Canadospira  Canalitatus  Canavirila  Cancellospirifer  Cancellothyris  Cancrinella  Cancrinelloides  Candispirifer  Cantabriella  Canthylotreta  Capelliniella  Capillarina  Capillirhynchia  Capillirostra  Capillispirifer  Capillithyris  Capillomesolobus  Capillonia  Caplinoplia  Carapezzia  Caratrypa  Carbocyrtina  Cardiarina  Cardinirhynchia  Cardinocrania  Cardiothyris  Caricula  Carinagypa  Carinatina  Carinatinella  Carinatothyris  Carinatrypa  Cariniferella  Carinokoninckina  Carlinia  |  Carneithyris  Carolirhynchia  Carpatothyris  Carpinaria  Carringtonia  Carteridina  Cartorhium  Caryogyps  Caryona  Caryorhynchus  Casquella  Cassianospira  Cassidirostrum  Castellaroina  Catacephalus  Catazyga  Cathaysia  Caucasella  Caucasiproductus  Caucasoproductus  Caucasorhynchia  Caucasothyris  Cavatisinurostrum  Cedulia  Celdobolus  Celebetes  Celidocrania  Celsifornix  Celtanoplia  Cenorhynchia  Centronella  Centronelloidea  Ceocypea  Ceramisia  Cerasina  Ceratreta  Cerberatrypa  Cererithyris  Chaeniorhynchus  Chaganella  Chalimochonetes  Changshaispirifer  Changtangella  Changyangrhynchus  Chaoiella  Chaoina  Chapadella  Chapinella  Charionella  Charionoides  Charltonithyris  Chascothyris  Chathamithyris  Chattertonia  Chatwinothyris  Chaulistomella  Cheirothyris  Cheirothyropsis  Chelononia  Cheniothyris  Chenxianoproductus  Cherkesovaena  Cherubicornea  Chianella  Chile  Chilianshania  Chilidiopsis  Chilidorthis  Chimaerothyris  Chivatschella  Chlidonophora  Chlupacina  Chlupacitoechia  Chnaurocoelia  Choanodus  Chondronia  Chonetella  |  Chonetes  Chonetina  Chonetinella  Chonetinetes  Chonetipustula  Chonetoidea  Chonopectella  Chonopectoides  Chonopectus  Chonosteges  Chonostegoidella  Chonostegoides  Chonostrophia  Chonostrophiella  Choperella  Choristitella  Choristites  Choristothyris  Christianella (brachiopod)  Christiania  Chrustenopora  Chynistrophia  Cillinella  Cimicinella  Cimicinoides  Cincinnetina  Cincta  Cinctifera  Cinctopsis  Cinerorthis  Cingolospiriferina  Cingulella  Cingulodermis  Cirpa  Cistellarcula  Claratrypa  Clarkeia  Clarkella  Clathrithyris  Clavigera  Clavodalejina  Cleiothyridina  كلفتونية وحيدة الورقة  Clinambon  Clintonella  Clistotrema  Clitambonites  Clivospirifer  Clorinda  Clorindella  Clorindina  Clorindinella  Cloudella  Cloudothyris  Cnismatocentrum  Coelospira  Coelospirella  Coelospirina  Coeloterorhynchus  Coenothyris  Colaptomena  Coledium  Colinella  Collarothyris  Collemataria  Colletostracia  Collinithyris  Collumatus  Colongina  Colophragma  Colosia  Colpotoria  Columellithyris  Comatopoma  Comelicania  Comiotoechia  Companteris  Composita  |  Compositella  Compressoproductus  Compsothyris  Comuquia  Conarosia  Conarothyris  Conchidium  Concinnispirifer  Concinnithyris  Conispirifer  Connectoproductus  Conodiscus  Conomimus  Conotreta  Contradouvillinia  Convexothyris  Coolinia  Cooperina  Cooperispira  Cooperithyris  Cooperrhynchia  Coptothyris  Corbicularia  Cordatomyonia  Corineorthis  Coriothyris  Cornwallia  Coronalosia  Corrugatimediorostrum  Cortezorthis  Corvinopugnax  Corylispirifer  Coscinarina  Coscinophora  Costachonetes  Costacranaena  Costalosiella  Costanoplia  Costatispirifer  Costatrypa  Costatumulus  Costellarina  Costellirostra  Costellispirifer  Costicrura  Costiferina  Costinorella  Costirhynchia  Costisorthis  Costispinifera  Costispirifer  Costispiriferina  Costisteges  Costistricklandia  Costistrophomena  Costistrophonella  Costitrimerella  Costoconcha  Craigella  Cranaena  Crania  Craniops  Craniotreta  Craniscus  Craspedalosia  Craspedelia  Craspedona  Crassatrypa  Crassipunctatrypa  Crassumbo  Cratispirifer  Cratorhynchonella  Cratospirifer  Cremnorthis  Crenispirifer  Cretirhynchia  Cricosia  |  Crinisaria  Crinisarina  Crinistrophia  Cristicoma  Cristiferina  Cromatrypa  Crossacanthia  Crossalosia  Crossiskenidium  Crozonorthis  Cruralina  Cruratula  Cruricella  Crurirhynchia  Crurispina  Crurithyris  Cryptacanthia  Cryptatrypa  Cryptonella  Cryptopora  Cryptoporella  Cryptorhynchia  Cryptospirifer  Cryptothyris  Cryptotreta  Ctenalosia  Ctenochonetes  Ctenokoninckina  Cubacula  Cubanirhynchia  Cubanothyris  Cudmorella  Cuersithyris  Cumberlandina  Cuneirhynchia  Cuparius  Cupularostrum  Curticia  Curtirhynchia  Cycladigera  Cyclantharia  Cyclocoelia  Cyclomyonia  Cyclorhynchia  Cyclospira  Cyclothyris  Cymatorhynchia  Cymbidium  Cymbistropheodonta  Cymbithyris  Cymbricia  Cymidia  Cymoproductus  Cymostrophia  Cyndalia  Cyphomena  Cyphomenoidea  Cyphotalosia  Cyphoterorhynchus  Cyranoia  Cyrbasiotreta  Cyrolexis  Cyrtalosia  Cyrtella  Cyrtia  Cyrtina  Cyrtinaella  Cyrtinoides  Cyrtinopsis  Cyrtiopsis  Cyrtiorina  Cyrtoniscus  Cyrtonotella  Cyrtonotreta  Cyrtospirifer  Cyrtothyris  Cystothyris  |