Girish Mahajan

Microderoceras

Updated on
Share on FacebookTweet on TwitterShare on LinkedIn
Kingdom  Animalia
Family  Eoderoceratidae
Rank  Genus
Subclass  Ammonites
Superfamily  Eoderocerataceae
Phylum  Mollusca
Order  Ammonitida
Similar  Ammonites, Orthaspidoceras, Oxynoticeras, Ochetoceras, Normannites

2012 microderoceras birchi black ven


Microderoceras is a flat sided, evolute, radially ribbed Lower Jurassic ammonite belonging to the ammonitid family Eoderoceratidae and superfamily Eoderocerataceae. Its whorls are subquadrangular in section; venter on the outer rim, rounded; sides with two rows if distinct spines, tubercles on internal molds, formed at either end of the ribs.

These shelled cephalopods, named by Alpheus Hyatt in 1871, are part of the now extinct Ammonoidea, which are distinct from the shelled nautiloids still found living today.

References

Microderoceras Wikipedia


Similar Topics
Normannites
Ochetoceras
Oxynoticeras
Topics