Syntype series of S. laevis Caullery, 944 includes two distinctive species primarily based
Syntype series of S. laevis Caullery, 944 contains two unique species determined by their ventrocaudal shields: three syntypes have an hirsute integument with abundant sediment particles firmly attached, plus the shield basal layer is soft, porous, and a further one particular has a shield using a stiff basal layer. As a way to redefine the species delineation since these two shield patterns differ PubMed ID:https://www.ncbi.nlm.nih.gov/pubmed/11836068 a lectotype has been selected (ICZN 999, Art. 74.), the term has been introduced inside the materials section and in the description (ICZN 999, Art. 74.7.), described and illustrated (ICZN 999, Art. 74.7.two) and the two other specimens are regarded as paralectotypes (ICZN 999, Recomm. 74F). This proposal has been made to restrict the usage of this species name to these specimens possessing hirsute shields with abundant, firmly attached sediment particles (ICZN 999, Art. 74.7.three). The selected specimen (lectotype) corresponds towards the initially illustrated specimen (ICZN 999, Recomm. 74B). An additional syntype of S. laevis (ZMA 49) is broken, most 
body papillae had been eroded, most shield fascicles chaetae were broken, its introvert is invaginated, and itsKelly Sendall Sergio I. SalazarVallejo ZooKeys 286: 4 (203)papillae are arranged in transverse groups; the shield has a stiff layer, with concentric lines and ribs, displaying a banded pigmentation. It resembles S. spinosa and will not belong to P. laevis. On the other hand, of the ten syntypes of S. laevis var. minor, 5 (ZMA 528), are very tiny specimens possibly of C. laevis, but their modest size complicates their optimistic identification; the other five syntypes (ZMA 504), are driedout, and their identification is even more problematic. Consequently, S. laevis var. minor should be regarded as indeterminable. Caulleryaspis laevis (Caullery, 944) comb. n. differs in two major characters from C. gudmundssoni sp. n.: the relative improvement of the anterior shield depression along with the relative development of peg chaetae. In P. laevis the anterior depression is shallow and peg chaetae will not be nicely developed, generating them tough to be detected, whereas in P. gudmundssoni the anterior depression is deep and peg chaetae are extremely robust, becoming effortlessly noticed from the surrounding shield surface. Distribution. Andaman Sea to Southeastern Australia, 3947 m depth. Castanospermine supplier Kastoro et al. (989) believe this really is a very popular estuarine species in East Java, in 0.30.0 m, and salinities of 29.34.0 . Genus Petersenaspis gen. n. urn:lsid:zoobank.org:act:7AEC3E5B68D457AAD7508A956F5B736 http:speciesid.netwikiPetersenaspis Type species. Sternaspis capillata Nonato, 966. Diagnosis. Sternaspids with introvert hooks subdistally expanded. Preshield area with 8 segments. Ventrocaudal shield stiff with feebly created ribs, and no concentric lines. Remarks. Petersenaspis gen. n. and Sternaspis have stiff shields, whereas Caulleryaspis has soft shields. However, Petersenaspis differs from Sternaspis simply because its introvert hooks are subistally expanded, you will find 8 segments within the preshield region, along with the shield has deeply developed ribs but no concentric lines, whereas in Sternaspis introvert hooks are tapered, you’ll find 7 segments in the preshield area, and also the shield has well developed ribs, typically with concentric lines. As stated above, Petersenaspis gen. n. consists of, besides the type species, P. capillata (Nonato, 966) comb. n from Central and Southern Brazil, P. palpallatoci sp. n. in the Philippine Islands, and an additional species which can be characterized bel.