餅菊石(學名:Popanoceras)是生存於二疊紀的一屬菊石。其外殼呈扁平的餅狀,因而得名。殼的臍部狹小,側面有細密的波浪狀肋條。[2]其化石被發現於俄羅斯、哈薩克、帝汶島、中國及塔吉克等地。[1]
物種[1]
- Pamiropopanoceras corpulentum
- Pamiropopanoceras meridionale
- Popanoceras annae
- Popanoceras congregale
- Popanoceras haugi
- Popanoceras indoaustralicum
- Popanoceras kueichowense
- Popanoceras polypetale
- Popanoceras simplex
- Popanoceras sintasense
- Popanoceras sobolewskyanum
- Popanoceras toumanskayae
- Popanoceras tschernowi
- Popanoceras walcotti
- Popanoceras xizangense
- Popanoceras ziyunense
參考文獻
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