Rhynchonellida

**小嘴貝目**（學名：Rhynchonellida）為小嘴貝綱的一個目。

## 下級分類

本目包括以下科：

* Acanthothirididae
* Allorhynchidae
* Amphidellidae
* Amphipellidae
* Ancistorhynchidae
* Ancistrorhynchidae
* Antistrixidae
* Apodosiidae
* Araratellidae
* Aratellidae
* Aseptorhynchiidae
* Astraeleniidae
* Atriboniidae
* Austrirhynchidae
* Austrirhynchiidae
* Basiliolidae
* Camarotoechiidae
* Camerophorinidae
* Cardiarinidae
* Cardinirhynchiidae
* Chaniellidae
* Cryptoporidae
* Cryptoporiidae
* Cyclothyridae
* Cyclothyrididae
* Dimerellidae
* Dispheniidae
* Dogdoidae
* Eatoniidae
* Eoglossinotoechiidae
* Erymnariidae
* Eucharitinidae
* Eumetabolotoechiidae
* Frieleiidae
* Glossinotoechiidae
* Hadrorhynchiidae
* Halorellidae
* Hebetoechiidae
* Hemithirididae
* Hemithyrididae
* Hypothyridinidae
* Innaechiidae
* Jacoburbirostridae
* Jafarirhynchidae
* Katuniidae
* Ktenopotamorhynchidae
* Ladogiidae
* Lambdarinidae
* Lanceomyoniidae
* Leiorhynchidae
* Leptocoeliidae
* Machaerariidae
* Meduanarostridae
* Niorhynicidae
* Norellidae
* Notanopliidae
* Notosariidae
* Nucinulidae
* Obturamentellidae
* Ochotorhynchiidae
* Oligorhynchiidae
* Orthorhynchulidae
* Parallelepipedorhynchidae
* Paranorellidae
* Peregrinellidae
* Petasmariidae
* Petasmatheridae
* Phoenicitoechiidae
* Platyterorhynchidae
* Plectorhynchellidae
* Pontisiidae
* Praecyclothyrididae
* Prionorhynchiidae
* Psilocamaridae
* Pugnacidae
* 小嘴貝科 Pygmaellidae
* Rhynchonellidae
* Rhynchoporidae
* Rhynchotetradidae
* Rhynchotrematidae
* Rhynchotretiidae
* Rhynchotretradidae
* Rozmanariidae
* Salanygolinidae
* Sapphicorhynchidae
* Septalariidae
* Septirhynchiidae
* Sinorhynchiidae
* Sphenotretidae
* Stenoscismatidae
* Tethyrhynchiidae
* Tetracameridae
* Tetrarhynchiidae
* Triasorhynchiidae
* Trigonirhynchiidae
* Trigonorhynchiidae
* Uncinulidae
* Wellerellidae
* Yunnanellidae
* Zaigunrostridae
* Zhejiangellidae

**科的地位未定的屬：**

* _Aidynkulirhynchia_ Ovtsharenko, 1983
* _Ancistrorhynchia_
* _Antistrixia_
* _Aratella_
* _Bailongjiangella_ Fu, 1982
* _Begiarslania_ Titova, 1992
* _Beichuanrhynchus_ Chen Yuanren, 1990
* _Bergalarai_
* _Callaiaspida_
* _Camarotoechiodes_
* _Canavirila_ Sartenaer, 1994
* _Chathamirhynchia_ Lee & Motchurova-Dekova, 2008
* _Corrugatimediorostrum_ Sartenaer, 1970
* _Davinirhynchia_
* _Dichotomosella_ Tchoumatchenco, 1987
* _Discamella_ Trotter & Talent, 2005
* _Dorsisinus_ Easton et al., 1958
* _Dorsisinus_ Sanders, 1958
* _Dzhangirhynchia_
* _Ellassonia_
* _Erectocephalus_
* _Homeorhynchia_
* _Hypoleiorhynchus_ Linnik, 1976
* _Irgislella_
* _Kermanirhyncha_ Popov, Zaman, Baranov, Ghobadi Pour & Holmer, 2021
* _Ladogilinella_ Lyashenko, 1973
* _Ladogiodes_
* _Langkawai_
* _Laosia_ Mansuy, 1913
* _Leiorhynchoides_
* _Leptocaryorhyncus_
* _Linxiangxiella_ Yang, 1984
* _Machaerotoechia_
* _Makridinirhynchia_ Sucic-Protic, 1969
* _Mediterranirhynchia_ Sucic-Protic, 1969
* _Meglopterorhynchus_
* _Miaohuangrhynchus_ Yang, 1977
* _Microsphaeridiorhynchu_
* _Minutalirhynchia_
* _Omolonorhynchia_
* _Orbiculatisiurostrum_
* _Orthorhyncula_
* _Paratetratomia_ Yang, 1977
* _Paryphorhynchopora_
* _Payuella_ Grabau, 1934
* _Perakia_ Hamada, 1969
* _Physetorhynchia_
* _Platyglossariorhynchus_ Sartenaer, 1970
* _Pompoecilorhynchus_
* _Pontalorhynchia_
* _Praegnamtenia_
* _Praelacunosella_
* _Protodorsisinus_ Trotter & Talent, 2005
* _Protorhyncha_ Hall & Clarke, 1894
* _Pseudocamaratoechia_
* _Pseudocapillirhynchia_ Motchurova-Dekova, Radulovic & Metodiev, 2009
* _Pseudoglossirotoechia_
* _Pseudonudirostra_
* _Qilianotryma_ Xu, 1979
* _Qinlingotoechia_ Fu, 1983
* _Rhynchotetraoides_
* _Rionorhynchia_
* _Rostrirhynchia_ Sucic-Protic, 1969
* _Salairotoechia_ Rzhonsnitzkaya, 1968
* _Seminula_ M'Coy, 1844
* _Septemirostellum_ Roberts, 1971
* _Septocamarella_
* _Serbiarhynchia_
* _Sichuanrhynchis_
* _Slovenirhynchia_ Siblik, 1967
* _Stegerhynchops_
* _Sulciphoria_ Smirnova, 1992
* _Tainotoechia_
* _Tasmalella_
* _Tatjamoa_
* _Tungussotoechia_ Lopushinskaya, 1976
* _Uralotoechia_
* _Wairakiella_
* _Wulungguia_
* _Yanbianella_ Tong, 1978
* _Yukiangites_
* _Yunshanella_
* _Zanclorhyncha_

## 參考文獻