- The
Hettangian is the
earliest age and
lowest stage of the Jur****ic
Period of the
geologic timescale. It
spans the time
between 201.3 ± 0.2 Ma and 199...
-
Sinemurian is
preceded by the
Hettangian and is
followed by the Pliensbachian. In
Europe the
Sinemurian age,
together with the
Hettangian age, saw the deposition...
- be as old as the
Norian stage of the Late Tri****ic and as
young as the
Hettangian stage of the
Early Jur****ic). Two
genera are known:
Agrosaurus and Thecodontosaurus;...
- chronostratigraphy). It was
preceded by the
Norian and
succeeded by the
Hettangian (the
lowermost stage or
earliest age of the Jur****ic). The base of the...
-
meaning 'lizard') is a
genus of
ichthyosaurs from the
Early Jur****ic (
Hettangian - Pliensbachian) of
Europe (Belgium, England,
Germany and Portugal). Some...
-
known from the Late Tri****ic -
Early Jur****ic
boundary (probably
early Hettangian stage) of England. It
contains a
single species,
Atychodracon megacephalus...
-
Early Jur****ic, but also
including part of the
preceding Rhaetian. The
Hettangian Stage was
named by
Swiss palaeontologist Eugène
Renevier in 1864 after...
-
Portland Formation,
Northeastern United States,
which was
deposited from the
Hettangian age into the
Sinemurian age,
between about 200 and 192
million years ago...
-
lower jaw from a
longirostrine archosaur has been
described from
early Hettangian strata in the town of
Watchet in Somerset, England.
While teleosaurid...
-
conocauda is
known from
Posidonia Shale, and C.
montefiorei is
known from the
Hettangian strata of the Blue Lias
Formation and from
Charmouth Mudstone Formation...
