Bivalvia - Cardiida - Tellinidae
Alternative spelling: Megangulus
Parent taxon: Tellina according to E. V. Coan et al. 2000
See also Matsubara 2002, Moore 2003 and Sepkoski 2002
Sister taxa: Tellina (Arcopagia) gabbi, Tellina (Cadella), Tellina (Cyclotellina), Tellina (Elliptotellina), Tellina (Eurytellina), Tellina (Fabulina), Tellina (Finlayella), Tellina (Gastranopsis), Tellina (Homalina), Tellina (Laciolina), Tellina (Loxoglypta), Tellina (Macaliopsis), Tellina (Macomona), Tellina (Miratellina), Tellina (Moerella), Tellina (Nitidotellina), Tellina (Olcesia), Tellina (Oudardia), Tellina (Peronaea), Tellina (Peronidia), Tellina (Phyllodina), Tellina (Pseudarcopagia) victoriae, Tellina (Saulella), Tellina (Scutarcopagia), Tellina (Scutocopagia), Tellina (Sinuosipagia), Tellina (Tellinella), Tellina (Tellinidella), Tellina actutangula, Tellina aequalis, Tellina albinelloides, Tellina alisoensis, Tellina alta, Tellina ashburnerii, Tellina asperrima, Tellina australis, Tellina balaustina, Tellina barrandei, Tellina bavarica, Tellina benedenii, Tellina bernayi, Tellina beyrichi, Tellina brevirostralis, Tellina brimonti, Tellina buboana, Tellina bullula, Tellina burmeisteri, Tellina cainozoica, Tellina capsoides, Tellina cherokeensis, Tellina collustrata, Tellina cossmanni, Tellina couvaensis, Tellina cumana, Tellina cupressensis, Tellina cynoglossula, Tellina decurtata, Tellina diegoana, Tellina distans, Tellina distorta, Tellina divaricata, Tellina donacilla, Tellina donacina, Tellina dowlingi, Tellina edentula, Tellina edwardsi, Tellina egena, Tellina elliptica, Tellina equideclivis, Tellina equilateralis, Tellina eugenia, Tellina exarata, Tellina fabula, Tellina flexuosa, Tellina foliacea, Tellina fraasi, Tellina geulemensis, Tellina gibber, Tellina hoffmanniana, Tellina idonea, Tellina isonema, Tellina kincaidi, Tellina lata, Tellina leana, Tellina lilium, Tellina longicallus, Tellina luederitzi, Tellina madagascariensis, Tellina masinguiensis, Tellina masoni, Tellina maylandensis, Tellina merangiana, Tellina merriami, Tellina minima, Tellina modesta, Tellina molengraaffi, Tellina nitida, Tellina oregonensis, Tellina palatam, Tellina panamensis, Tellina parilis, Tellina patula, Tellina pectorosa, Tellina perrini, Tellina phylloides, Tellina pilgrimi, Tellina pinguis, Tellina pittsburgensis, Tellina planata, Tellina pondicherriensis, Tellina porrecta, Tellina praecuta, Tellina protostriatula, Tellina pulchella, Tellina pygmaea, Tellina quadrata, Tellina radiata, Tellina ralphi, Tellina rastella, Tellina redmondii, Tellina remies, Tellina remondii, Tellina ruderata, Tellina rugosa, Tellina santana, Tellina scandula, Tellina segregata, Tellina serica, Tellina serrata, Tellina sillimani, Tellina soledadensis, Tellina songoensis, Tellina staurella, Tellina subequalis, Tellina sutterensis, Tellina tallicheti, Tellina tehachapi, Tellina temperata, Tellina tenuis, Tellina transversa, Tellina tricarinata, Tellina trumani, Tellina truncata, Tellina vancouverensis, Tellina venezuelensis, Tellina verneuili, Tellina vicksburgensis, Tellina virginiana, Tellina williamsi, Tellina wilsoni, Tellina woodmanensis, Tellina woodwardi
Subtaxa: Megangulus bodegensis Megangulus maxima Megangulus protovenulosa Megangulus pulchrus Tellina (Megangulus) crooki Tellina (Megangulus) kewi Tellina (Megangulus) lutea
Ecology: facultatively mobile deep infaunal deposit feeder
Distribution:
• Quaternary of Mexico (3 collections), United States (20: California)
• Pliocene of Japan (2), the Russian Federation (4), United States (7: California)
• Miocene of Japan (4), the Russian Federation (10), United States (11: Alaska, California)
• Oligocene to Miocene of the Russian Federation (1)
• Oligocene of Canada (2: British Columbia)
• Eocene of Japan (3), United States (2: California)
• Paleocene of United States (5: California)
Total: 74 collections including 76 occurrences