Placatenella complanata Brito, 1981
- GBIF Backbone Taxonomy
- Placatenella complanata
Diagnosis. As for the genus, which is emended from Brito's (1981: 3) original diagnosis or description (it is not stated which). Brito's information does not diagnose the species because it does not distinguish it from other members of the genus Abertella to which it was originally assigned (translated from the Portuguese): " Test flattened, flat on the oral and convex on the aboral surface, with a semicircular outline, and a marked anal indentation, a small but sharp indentation in the anterior ambulacrum, and only a sinuosity in the paired ambulacra. Petals closed, measuring approximately two-thirds of the test radius with the poriferous zones slightly narrower than the interporiferous. Central peristome, from which extend five food grooves that soon fork. Periproct ventral in the posterior indentation. "
Type and other material studied. The holotype, MNRJ 5460 - I, is the only originally described specimen, and is housed at the Museu Nacional, Rio de Janeiro, Brazil. We also examined other specimens assigned to this species by Brito (1986), including MNRJ 5536 - I, MPEG- 886 - I, MPEG 1753 - I, MPEG 2405 - I, and DNPM 6217. These are generally of higher quality than the holotype, revealing new information concerning the species.
- Placatenella complanata Brito, 1981