| channa striata | Yes | species | eukaryota | vertebrates | species | 64152 | click here |
| channidae | Yes | | | vertebrates | family | 30910 | click here |
| chanos chanos | Yes | species | eukaryota | vertebrates | species | 29144 | click here |
| charadrius bicinctus | Yes | species | eukaryota | vertebrates | species | 50394 | click here |
| charadrius ruficapillus | Yes | species | eukaryota | vertebrates | species | 50399 | click here |
| charybdis feriata | Yes | species | eukaryota | invertebrates | species | 65693 | click here |
| chelidonium majus | Yes | species | eukaryota | plants | species | 71251 | click here |
| chelonia mydas | Yes | species | eukaryota | vertebrates | species | 8469 | click here |
| chelydra serpentina | Yes | species | eukaryota | vertebrates | species | 8475 | click here |
| chenopodium quinoa | Yes | species | eukaryota | plants | species | 63459 | click here |
| chiastopsylla rossi | Yes | species | eukaryota | invertebrates | species | 507017 | click here |
| chilacis typhae | Yes | species | | | species | 881430 | click here |
| chilo suppressalis | Yes | species | eukaryota | invertebrates | species | 168631 | click here |
| chinchilla | Yes | | | rodents | genus | 10151 | click here |
| chinchilla lanigera | Yes | species | eukaryota | rodents | species | 34839 | click here |
| chionoecetes japonicus | Yes | species | eukaryota | invertebrates | species | 290538 | click here |
| chionoecetes opilio | Yes | species | eukaryota | invertebrates | species | 41210 | click here |
| chionomys nivalis | Yes | species | eukaryota | rodents | species | 269649 | click here |
| chironomus circumdatus | Yes | species | eukaryota | invertebrates | species | 113492 | click here |
| chiroptera | Yes | | | mammals | order | 9397 | click here |
| chlamydosaurus kingii | Yes | species | eukaryota | vertebrates | species | 103699 | click here |
| chlamydotis macqueenii | Yes | species | eukaryota | vertebrates | species | 187382 | click here |
| chlamydotis undulata | Yes | species | eukaryota | vertebrates | species | 172680 | click here |
| chlamydotis undulata undulata | Yes | subspecies | eukaryota | vertebrates | subspecies | 187383 | click here |
| chloephaga melanoptera | Yes | species | eukaryota | vertebrates | species | 8860 | click here |
| chlorella vulgaris | Yes | species | eukaryota | plants | species | 3077 | click here |
| chloris barbata | Yes | species | eukaryota | plants | species | 167333 | click here |
| chlorocebus aethiops | Yes | species | eukaryota | primates | species | 9534 | click here |
| chlorocebus aethiops vervet | Yes | subspecies | eukaryota | primates | subspecies | 100936 | click here |
| chlorocebus pygerythrus | Yes | species | eukaryota | primates | species | 60710 | click here |
| chlorocebus sabaeus | Yes | species | eukaryota | primates | species | 60711 | click here |
| chlorophytum borivilianum | Yes | species | eukaryota | plants | species | 503355 | click here |
| chlorophytum comosum | Yes | species | eukaryota | plants | species | 34182 | click here |
| choeronycteris mexicana | Yes | species | eukaryota | mammals | species | 148050 | click here |
| chondrichthyes | Yes | | | vertebrates | class | 7777 | click here |
| chroicocephalus | Yes | | | | genus | 1129741 | click here |
| chroicocephalus genei | Yes | species | | | species | 1569666 | click here |
| chroicocephalus ridibundus | Yes | species | | | species | 1192867 | click here |
| chromaphis hirsutustibis | Yes | species | | | species | 1064593 | click here |
| chrysanthemum | Yes | | | plants | genus | 13422 | click here |
| chrysanthemum indicum | Yes | species | eukaryota | plants | species | 146995 | click here |
| chrysanthemum x morifolium | Yes | subspecies | eukaryota | plants | species | 41568 | click here |
| chrysanthemum zawadskii | Yes | species | eukaryota | plants | species | 147003 | click here |
| chrysemys picta | Yes | species | eukaryota | vertebrates | species | 8479 | click here |
| chrysocyon brachyurus | Yes | species | eukaryota | mammals | species | 68728 | click here |
| chrysolina herbacea | Yes | species | eukaryota | invertebrates | species | 75521 | click here |
| chrysomelidae | Yes | | | invertebrates | family | 27439 | click here |
| chrysomus ruficapillus | Yes | species | eukaryota | vertebrates | species | 555234 | click here |
| chrysomya | Yes | | | invertebrates | genus | 45449 | click here |
| chrysomya megacephala | Yes | species | eukaryota | invertebrates | species | 115424 | click here |
| chrysomya rufifacies | Yes | species | eukaryota | invertebrates | species | 45450 | click here |
| chrysoperla zastrowi | Yes | species | eukaryota | invertebrates | species | 417543 | click here |
| chrysoperla zastrowi sillemi | Yes | species | eukaryota | invertebrates | species | 482137 | click here |
| chrysopogon zizanioides | Yes | species | eukaryota | plants | species | 167337 | click here |
| cicadella viridis | Yes | species | eukaryota | invertebrates | species | 36150 | click here |
| cicer arietinum | Yes | species | eukaryota | plants | species | 3827 | click here |
| cicer pinnatifidum | Yes | species | eukaryota | plants | species | 47088 | click here |
| cichorium intybus | Yes | species | eukaryota | plants | species | 13427 | click here |
| ciconia ciconia | Yes | species | eukaryota | vertebrates | species | 8928 | click here |
| cimex lectularius | Yes | species | eukaryota | invertebrates | species | 79782 | click here |
| cinara | Yes | | | invertebrates | genus | 97051 | click here |
| cinara acutirostris | Yes | species | | | species | 1244002 | click here |
| cinara alba | Yes | species | | | species | 1244003 | click here |
| cinara anelia | Yes | species | eukaryota | invertebrates | species | 527604 | click here |
| cinara apini | Yes | species | | | species | 1421456 | click here |
| cinara arizonica | Yes | species | eukaryota | invertebrates | species | 230866 | click here |
| cinara atrotibialis | Yes | species | | | species | 1244004 | click here |
| cinara brauni | Yes | species | | | species | 654827 | click here |
| cinara brevisaeta | Yes | species | | | species | 1244005 | click here |
| cinara brevispinosa | Yes | species | | | species | 1421458 | click here |
| cinara bungeanae | Yes | species | | | species | 1244006 | click here |
| cinara cedri | Yes | species | eukaryota | invertebrates | species | 506608 | click here |
| cinara cembrae | Yes | species | | | species | 1421459 | click here |
| cinara cf. pinea 11fr | Yes | no rank | | | species | 1878995 | click here |
| cinara coloradensis | Yes | species | eukaryota | invertebrates | species | 230863 | click here |
| cinara confinis | Yes | species | | | species | 1421460 | click here |
| cinara contortae | Yes | species | eukaryota | invertebrates | species | 230851 | click here |
| cinara costata | Yes | species | | | species | 1244007 | click here |
| cinara cuneomaculata | Yes | species | | | species | 1244008 | click here |
| cinara cupressi | Yes | species | eukaryota | invertebrates | species | 136354 | click here |
| cinara curtihirsuta | Yes | species | | | species | 1421461 | click here |
| cinara curvipes | Yes | species | eukaryota | invertebrates | species | 230862 | click here |
| cinara edulis | Yes | species | eukaryota | invertebrates | species | 230847 | click here |
| cinara etsuhoe | Yes | species | eukaryota | invertebrates | species | 97059 | click here |
| cinara formosana | Yes | species | eukaryota | invertebrates | species | 384387 | click here |
| cinara fornacula | Yes | species | eukaryota | invertebrates | species | 527605 | click here |
| cinara fresai | Yes | species | | | species | 1240249 | click here |
| cinara glabra | Yes | species | eukaryota | invertebrates | species | 97060 | click here |
| cinara gracilis | Yes | species | | | species | 1655946 | click here |
| cinara grande | Yes | species | | | species | 1421463 | click here |
| cinara gudaris | Yes | species | | | species | 506604 | click here |
| cinara harmonia | Yes | species | | | species | 1689208 | click here |
| cinara hottesi | Yes | species | eukaryota | invertebrates | species | 230864 | click here |
| cinara juniperi | Yes | species | eukaryota | invertebrates | species | 506603 | click here |
| cinara kochiana | Yes | species | | | species | 1421465 | click here |
| cinara laportei | Yes | species | | | species | 1925522 | click here |
| cinara largirostris | Yes | species | | | species | 1244009 | click here |
| cinara laricifex | Yes | species | eukaryota | invertebrates | species | 527606 | click here |
| cinara laricifoliae | Yes | species | | | species | 1421466 | click here |
| cinara laricis | Yes | species | | | species | 1244010 | click here |