Cephalopoda - Ceratitida - Hedenstroemiidae
Alternative combination: Hedenstroemia augusta
Invalid subtaxa: Cordillerites compressus Mathews 1929 [replaced name], Pseudosageceras compressus Mathews 1929 [replaced name]
Full reference: A. Brayard and H. Bucher. 2008. Smithian (Early Triassic) ammonoid faunas from northwestern Guangxi (South China): taxonomy and biochronology. Fossils and Strata 55:1-179
Belongs to Pseudosageceras according to A. Brayard et al. 2021
See also Brayard and Bucher 2008, Brühwiler et al. 2010, Brühwiler et al. 2012 and Jenks et al. 2010
Sister taxa: Pseudosageceras (Metasageceras), Pseudosageceras albanicum, Pseudosageceras boreale, Pseudosageceras grippi, Pseudosageceras multilobatum, Pseudosageceras pasquayi, Pseudosageceras plicatum, Pseudosageceras simplelobatum, Pseudosageceras simplex, Pseudosageceras striatus
Type specimens:
- Pseudosageceras augustum: PIMUZ 26138, a shell. Its type locality is Waili Laren section NW13, which is in a Smithian slope mudstone in the Luolou Formation of China.
- Pseudosageceras compressus:
Ecology: nektonic carnivore
Average measurements (in mm): shell diameter 31.3
Distribution:
• Triassic of China (15 collections), India (1), United States (6: Nevada, Utah)
Total: 22 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.