ammonoid
英 [æ'mɒnɔɪd] 美 [æ'mɒnɔɪd]

n.

菊石（已灭绝的头足动物）；

英英释义

ammonoid

• n.one of the coiled chambered fossil shells of extinct mollusks

  同义词：ammonite

权威例句

Ammonoid Life and Habitat
Ammonoid Life and Habitat
Ammonoid Life and Habitat. In: Ammonoid Paleobiology
Evolution of Complexity in Paleozoic Ammonoid Sutures.
Good Genes and Good Luck: Ammonoid Diversity and the End-Permian Mass Extinction
The Early Triassic ammonoid recovery: Paleoclimatic significance of diversity gradients
Correlation of mid-Palaeozoic ammonoid evolutionary events with global sedimentary perturbations
ONTOGENY AND HETEROCHRONY IN THE MIDDLE CARBONIFEROUS AMMONOID ARKANITES RELICTUS (QUINN, McCALEB, AND WEBB) FROM NORTHERN ARKANSAS
Timing of the Early Triassic carbon cycle perturbations inferred from new U–Pb ages and ammonoid biochronozones
New Early to Middle Triassic U–Pb ages from South China: Calibration with ammonoid biochronozones and implications for the timing o...