anamnionata
|a-nam-ni-o-na-ta|
C2
/ˌænæmniˈɒnətə/
vertebrates without an amnion
Etymology
Etymology Information
'anamnionata' originates from New Latin, specifically the prefix 'an-' meaning 'without' and 'amnion' meaning 'membrane around the embryo', with the suffix '-ata' denoting a group.
Historical Evolution
'anamnionata' was formed in scientific taxonomy to describe vertebrates lacking an amnion, contrasting with 'amniota'.
Meaning Changes
Initially, it meant 'animals without an amnion', and this meaning has remained consistent in scientific usage.
Meanings by Part of Speech
Noun 1
a group of vertebrates that do not develop an amnion during embryonic development, including fishes and amphibians.
Fishes and amphibians are classified as anamnionata.
Synonyms
Antonyms
Last updated: 2025/07/29 03:36