- 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...
-
meaning 'lizard') is a
genus of
ichthyosaurs from the
Early Jur****ic (
Hettangian - Pliensbachian), with
possible Late Tri****ic record, from
Europe (Belgium...
- 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...
-
Early Jur****ic, but also
including part of the
preceding Rhaetian. The
Hettangian Stage was
named by
Swiss palaeontologist Eugène
Renevier in 1864 after...
- to the
suborder Darwinulocopina is
described from the
Lower Jur****ic (
Hettangian)
Whitmore Point Member of the
Moenave Formation (Arizona and Utah, United...
- A frog is any
member of a
diverse and
largely carnivorous group of short-bodied,
tailless amphibians composing the
order Anura (ἀνούρα,
literally without...
- Formation,
United Kingdom, Rhaetian/
Hettangian Orthophlebia varia Martynova 1948
Dzhil Formation, Kyrgyzstan,
Hettangian-Sinemurian
Orthophlebia venosa Martynov...
-
quadrupedal locomotion Abrictosaurus 1975
Elliot Formation (Early Jur****ic,
Hettangian to Sinemurian) Lesotho South
Africa Known from two skulls, one of which...
- "flat stone".
There has been some
debate over the
actual base of the
Hettangian Stage, and so of the Jur****ic
System itself. Biostratigraphically, the...
-
Caecilians (/sɪˈsɪliən/; New
Latin for 'blind ones') are a
group of limbless,
vermiform (worm-shaped) or
serpentine (snake-shaped)
amphibians with small...
