Morgi pen morthwyl
| Morgwn pen morthwyl Amrediad amseryddol: Middle Miocene to Present[1] | |
|---|---|
| |
| Morgwn pen morthwyl sgolop (Sphyrna lewini) | |
| Dosbarthiad gwyddonol | |
| Teyrnas: | Animalia |
| Ffylwm: | Chordata |
| Dosbarth: | |
| Is-ddosbarth: | |
| Urdd: | Carcharhiniformes |
| Teulu: | Sphyrnidae T. N. Gill, 1872 |
| Genera | |
| |
| |
Grŵp o forgwn yw'r morgwn pen morthwyl.
Cyfeiriadau
golygu- ↑ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Chondrichthyes entry)". Bulletins of American Paleontology 364: 560. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=575&rank=class. Adalwyd 01/09/08.
