Sicyonia

Sicyonia is a genus of prawns, placed in its own family, Sicyoniidae. It differs from other prawns in that the last three pairs of its pleopods are uniramous, rather than biramous as seen in all other prawns.

Sicyonia contains 52 extant species, and one species known only from fossils from the Upper Cretaceous. Analyses using molecular phylogenetics suggest that the family Sicyoniidae is nested within the larger family Penaeidae, and that the latter family may need to be divided up, elevating each of its traditionally recognised tribes to the rank of family.

单词	Sicyoniidae
释义	Sicyoniidae 英语百科 Sicyonia Sicyonia is a genus of prawns, placed in its own family, Sicyoniidae. It differs from other prawns in that the last three pairs of its pleopods are uniramous, rather than biramous as seen in all other prawns. Sicyonia contains 52 extant species, and one species known only from fossils from the Upper Cretaceous. Analyses using molecular phylogenetics suggest that the family Sicyoniidae is nested within the larger family Penaeidae, and that the latter family may need to be divided up, elevating each of its traditionally recognised tribes to the rank of family.
随便看	unnerving的意思 unnes的意思 unnessary的意思 unnest的意思 unnested的意思 unnested version的意思 unnesting的意思 unnestle的意思 unnestled的意思 unnestles的意思 unnestling的意思 unnests的意思 unnet的意思 unnetted的意思 unnettled的意思 unnetworked的意思 unneurotic的意思 unneutered的意思 unneutral的意思 unneutralised的意思 unneutrality的意思 unneutralized的意思 unneutralized mercaptan的意思 unneutralized proton的意思 unneutrally的意思