| 词条 | Kallholnoceras |
| 释义 |
| fossil_range = Ordovician | image = |regnum = Animalia |phylum = Mollusca |classis = Cephalopoda | subclassis = Nautiloidea | ordo = Oncocerida | familia = | genus = Kallholnoceras | genus_authority = Frye, 1987 }} Kallholnoceras is a genus of early oncocerid nautiloids from the Ordovician of Sweden, known only from the Boda Limestone at Kallholn. References
1 : Prehistoric nautiloid genera |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。