Ascetoaxinus [SEP] parent taxon
Ascetoaxinus
Ascetoaxinus is a genus of saltwater clams, marine bivalve molluscs in the family Thyasiridae. The shells of species in this genus have a lunule with a scalloped margin.
The genus was first described in 2014 by Graham Oliver of the National Museum of Wales and Melissa Frey, curator of invertebrates at the Royal British Columbia Museum.
The genus consists of the following species:
- "Ascetoaxinus quatsinoensis" Oliver and Frey, 2014
- "Ascetoaxinus ovoidea" (Dall, 1890), formerly known as "
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