| 释义 |
cros·so·the·ca
\ˌ ̷ ̷ ̷ ̷ˈthēkə\ noun
Usage: capitalized
Etymology: New Latin, from cross- + -theca
: a form genus of fossil plants that are known from fructifications bearing pendulous sporangia in epaulet-shaped clusters and occurring on pecopteroid plant remains and that are usually considered to be seed ferns |