https://mapress.com/zt/article/view/zootaxa.3447.1.1
A checklist of the extant species of ophiuroids (Echinodermata: Ophiuroidea) from Brazilian waters...
a checklistof theextant species
https://pmc.ncbi.nlm.nih.gov/articles/PMC22090/
Proposal for a standardized temporal scheme of biological classification for extant species - PMC
With respect to conveying useful comparative information, current biological classifications are seriously flawed because they fail to (i) standardize criteria...
for a