Diestoceratidae [SEP] parent taxon
Diestoceratidae
Diestoceratidae is a family in the nautiloid cephalopod order Oncocerida with compressed, straight to faintly endogastic breviconic shells with a marginal siphuncle that contains discrete, irregular actinosphonate deposits.
The Diestoceratidae contains five known genera. They are:
- Diestoceras
- Danoceras
- Dowlingoceras
- Lockholmoceras
- Suttonoceras
External links.
- Diestoceratidae -Paleobio db
- Sweet, Walter C. 1964. Nautiloidea -Oncocera. Treatise on Invertebrate Paleontology, Part K. Geological Soc. of America & Univ Kansas Press.
Taxon in disguise
In bacteriology, a taxon in disguise is a species, genus or higher unit of biological classification whose evolutionary history reveals has evolved from another unit of similar or lower rank, making the parent unit paraphyletic. This happens when rapid evolution makes a new species appear radically different from the ancestral group, so that it is not (initially) recognised as belonging to the parent phylogenetic group, leaving the latter an evolutionary grade.
While the term is from bacteriology, parallel examples are found throughout the tree of