Schoch CL, Ciufo S, Domrachev M, Hotton CL, Kannan S, Khovanskaya R, Leipe D, Mcveigh R, O'Neill K, Robbertse B, Sharma S, Soussov V, Sullivan JP, Sun L, Turner S, Karsch-Mizrachi I.

Database (Oxford). 2020 Jan 1;2020:baaa062. doi:10.1093/database/baaa062

NCBI Taxonomy: a comprehensive update on curation, resources and tools.

83% of the know invertebrate species are still not in the database.

R. S. Ogden , A. L. Allcock , P. C. Wats & J. P. Thorpe

South African Journal of Marine Science, 1998, 20:1, 29-36, doi:10.2989/025776198784126476

The role of beak shape in octopodid taxonomy

PCA and discriminant analysis on morphological measurments of beak shape in octopolids. Geneera could be distinguished but not species.

Francesco Mastrototaro, Federica Montesanto, Marika Salonna, Frédérique Viard, Giovanni Chimienti, Egidio Trainito, Carmela Gissi

Zoological Journal of the Linnean Society, Volume 190, Issue 4, December 2020, Pages 1193–1216, doi:10.1093/zoolinnean/zlaa042

An integrative taxonomic framework for the study of the genus Ciona (Ascidiacea) and description of a new species, Ciona intermedia

“The percentage identity between C. intermedia and other Ciona species, including C. roulei and C. edwardsi, is lower than 94.28% for cox1, 90.14% for x3n1 [“cox2 and cob”] and 91.89% for x2cb [ cox3, trnK, nad1, and two non-coding spacers].”