n.鸚鵡螺類動(dòng)物

"These surprising results made us wonder if nautiloid fossilsmight also have some secrets to reveal. 他們有明顯的頭部，眼睛很大，視力很好。

From 2003 to 2004, we collected a large amount of Nautiloid and Graptolite fossils in upper metamorphic formations of Mayigangri area and determined the age to be middle and Late Ordovician-Silurian. 2004年我們?cè)诂斠缻徣找粠ё冑|(zhì)巖系上部采獲大量鸚鵡螺類和筆石類化石

Nautiloid（new genus）； 鸚鵡螺類（新屬）；

nautiloid fossils 鸚鵡螺化石