English Explanatory Dictionary

Hettangian

English dictionary entry

Meanings

name
  1. The earliest age of the Jurassic period, from 199.3–201.3Ma
  2. The corresponding lowest stage of the Jurassic system, marked by the lowest strata in which the neoammonite genus Psiloceras appears.

Word forms

Hettangian

Etymology

From French Hettange, now Hettange-Grande, a commune in northeastern France, (German Hettingen, Luxembourgish (Lorraine Franconian) Hetténgen).

Related words

Schlotheimia angulata Alsatites liasicus Psiloceras planorbis
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