Uhligia
Encyclopedia
Uhligia is a Lower Cretaceous (Barremian
Barremian
The Barremian is an age in the geologic timescale between 130.0 ± 1.5 Ma and 125.0 ± 1.0 Ma). It is a subdivision of the Early Cretaceous epoch...

) ancylocerid ammonoid cephalopod initially found in Germany.

Uhligia, named by Koenen, 1904, has the general form characteristic of heteromorph ancyloceratids. The early part is more or less straight, then sharply bent, followed by a second straight shaft and a final hook. Ribs are fine, weak, and irregular, lacking tubercles; slanted in the early part, straight in the later. Uhligia differs from genera like Ancyloceras
Ancyloceras
Ancyloceras is an extinct genus of heteromorph ammonite cephalopod found throughout the world during the Lower Cretaceous, from the Lower Barremian epoch until the genus' extinction during the Lower Aptian....

and Aspinoceras
Aspinoceras
Aspinoceras is an extinct genus of cephalopod belonging to the Ammonite subclass....

in lacking the open coil in the early stage.

Referencers

  • Arkell, et al, 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L. (Ammonoidea). Geol Soc of America and Univ Kansas Press. p. L211.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK