Yoldiidae

Yoldiidae is a taxonomic family of small to medium-sized saltwater clams, marine bivalve molluscs in the order Nuculanida.

Genera and species
Genera and species within the family Yoldiidae include:
 * Megayoldia
 * Megayoldia martyria
 * Megayoldia montereyensis
 * Megayoldia thraciaeformis
 * Microgloma Saunders & Allen, 1973
 * Microgloma guilonardi (D. F. Hoeksema, 1993)
 * Microgloma macaron Benaim & Absalão, 2011
 * Microgloma mirmidina (Dautzenberg & H. Fischer, 1897)
 * Microgloma nhanduti Benaim & Absalão, 2011
 * Microgloma pusilla (Jeffreys, 1879)
 * Microgloma turnerae H. L. Sanders & Allen, 1973
 * Microgloma yongei H. L. Sanders & Allen, 1973
 * Portlandia
 * Portlandia aestuariorum
 * Portlandia arctica
 * Portlandia beringii
 * Portlandia dalli
 * Portlandia fraterna
 * Portlandia frigida
 * Portlandia glacialis
 * Portlandia inconspicua
 * Portlandia inflata
 * Portlandia intermedia
 * Portlandia iris
 * Portlandia jeffreysi
 * Portlandia lenticula
 * Portlandia lucida
 * Portlandia minuscula
 * Portlandia sericea
 * Portlandia subangulata
 * Portlandia tamara
 * Yoldia Möller, 1842
 * Yoldia amygdalea
 * Yoldia beringiana
 * Yoldia cooperii
 * Yoldia excavata
 * Yoldia glacialis
 * Yoldia hyperborea
 * Yoldia limatula (Say, 1831)
 * Yoldia martyria
 * Yoldia micrometrica
 * Yoldia montereyensis
 * Yoldia myalis (Couthouy, 1838)
 * Yoldia regularis
 * Yoldia sapotilla (Gould, 1841)
 * Yoldia scissurata
 * Yoldia secunda
 * Yoldia seminuda
 * Yoldia solenoides
 * Yoldia thraciaeformis Storer, 1838
 * Yoldiella
 * Yoldiella cecinella
 * Yoldiella curta
 * Yoldiella dicella
 * Yoldiella dissimilis
 * Yoldiella expansa
 * Yoldiella fraterna
 * Yoldiella frigida
 * Yoldiella inconspicua
 * Yoldiella inflata
 * Yoldiella insculpta
 * Yoldiella intermedia
 * Yoldiella iris
 * Yoldiella jeffreysi
 * Yoldiella lenticula
 * Yoldiella lucida
 * Yoldiella nana
 * Yoldiella oleacina
 * Yoldiella orcia
 * Yoldiella pachia Verrill & Bush, 1898
 * Yoldiella philippiana
 * Yoldiella profundorum
 * Yoldiella propinqua
 * Yoldiella pusilla
 * Yoldiella sagamiana T. Okutani & K. Fujikura, 2022
 * Yoldiella sanesia
 * Yoldiella siliqua
 * Yoldiella striolata
 * Yoldiella subaequilatera
 * Yoldiella subangulata