> as lemmas
Helderˈbergian
Helderˈbergian adj. 
/hɛldəˈbɜːɡɪən//hɛldəˈbɜːdʒɪən/
/hɛldəˈbɜːɡɪən//hɛldəˈbɜːdʒɪən/ΘΚΠ
the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Devonian > specific
Helderberg1840
Coblenzian1853
Rhenan1853
Vergent1858
hercynian1880
Famennian1882
Frasnian1882
Givetian1882
Helderbergian1906
Siegenian1922
1906 T. C. Chamberlin & R. D. Salisbury Geol. II. 455 The capulid shells which abound at some localities in the Helderbergian..faunas.
1949 C. O. Dunbar Hist. Geol. x. 207 Two stages [of the American Devonian] are recognized, the Helderbergian and the Deerparkian, each with several formations. The Helderberg stage includes only limestone and calcareous shales.
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as lemmas
- vermiculant
- vermicular
- vermicular ascaris
- vermicular work
- vermicularly
- vermiculate
- vermiculated
- vermiculates
- vermiculating
- vermiculation
- vermiculations
- vermicule
- vermicules
- vermiculist
- vermiculite
- vermiculites
- vermiculose
- vicariously
- vicariousness
- vicariousnesses
- vicarish
- vicariship
- vicarly
- vicars
- vicars apostolic