1(especially of the cap of a fungus) having a central depression.
〔植，动〕（尤指菌盖）脐状的，中间凹陷的
1.1(of a shell) having an umbilicus.
（贝类）有脐的
Example sentencesExamples
Almost no widely umbilicate species existed, and only three morphs (E-, H-, and I-morphs) occupied a comparatively small area of the morphospace.
If the umbilicate side is directed downward and the flat side upward, this gives the impression the shell is sinistral or a left-handed spiral, because the aperture when held toward the observer is on the left.
Modal geometries C and D appear to represent the tendency for these pioneers, i.e., slowly expanding, moderately to openly umbilicate, compressed shells, typified by Otoceras and Ophiceras.
These four morphs represent a more or less continuous morphological series from widely umbilicate conch shapes with low aperture to conch geometries with a narrow umbilicus and high aperture.
The dominant taxa at that time (modal geometries C and D) had compressed, moderately to openly umbilicate shells with slowly expanding whorls, morphologies poorly exploited by Permian goniatitids.
By contrast, a narrowly umbilicate and thin shell possesses slender and dense ornamentation.
Definition of umbilicate in US English:
umbilicate
adjective
Botany Zoology
1(especially of the cap of a fungus) having a central depression.
〔植，动〕（尤指菌盖）脐状的，中间凹陷的
1.1(of a shell) having an umbilicus.
（贝类）有脐的
Example sentencesExamples
These four morphs represent a more or less continuous morphological series from widely umbilicate conch shapes with low aperture to conch geometries with a narrow umbilicus and high aperture.
By contrast, a narrowly umbilicate and thin shell possesses slender and dense ornamentation.
Almost no widely umbilicate species existed, and only three morphs (E-, H-, and I-morphs) occupied a comparatively small area of the morphospace.
Modal geometries C and D appear to represent the tendency for these pioneers, i.e., slowly expanding, moderately to openly umbilicate, compressed shells, typified by Otoceras and Ophiceras.
The dominant taxa at that time (modal geometries C and D) had compressed, moderately to openly umbilicate shells with slowly expanding whorls, morphologies poorly exploited by Permian goniatitids.
If the umbilicate side is directed downward and the flat side upward, this gives the impression the shell is sinistral or a left-handed spiral, because the aperture when held toward the observer is on the left.