Exechonella

Ramalho, Laís V., Taylor, Paul D., Moraes, Fernando Coreixas, Moura, Rodrigo, Amado-Filho, Gilberto M. & Bastos, Alex C., 2018, Bryozoan framework composition in the oddly shaped reefs from Abrolhos Bank, Brazil, southwestern Atlantic: taxonomy and ecology, Zootaxa 4483 (1), pp. 155-186: 159

publication ID

https://doi.org/10.11646/zootaxa.4483.1.6

publication LSID

lsid:zoobank.org:pub:05A08470-9473-4147-B54B-AB0C90173572

persistent identifier

http://treatment.plazi.org/id/6C3EF226-FFA1-790A-FF43-FA98FBA4F8BD

treatment provided by

Plazi

scientific name

Exechonella
status

 

Exechonella  sp.

( Fig. 2EView FIGURE 2)

Material examined. Abrolhos Bank, Bahia State, Brazil: MNRJ-Bry1375, Parcel dos Abrolhos, 4 m depth, February 2014, col. R. Moura, G. Amado-Filho & A. Bastos. 

Description. Small encrusting fragments comprising a few zooids ( Fig. 2EView FIGURE 2). Autozooids rhomboidal, longer than wide, separated by deep fissures; frontal wall convex, perforated by large circular pores surrounded by a smooth flat collar. Orifice almost quadrate, as wide as long; condyles, avicularia, kenozooids and ovicells not observed.

Geographic distribution. Abrolhos Bank, Bahia State ( Bastos et al. 2018; present study). 

Remarks. Due to the poor preservation and difficulty of obtaining colonies from the inner core, this specimen can be identified only to genus level. According to Cáceres-Chamizo et al. (2017), two species of Exechonella  are confirmed to occur in Brazilian waters: E. brasiliensis Canu & Bassler, 1928a  , described from the Bahia coast ( Canu & Bassler 1928a; Vieira et al. 2008), and E. vieirai Cáceres-Chamizo et al. 2017  , described from Alagoas and Bahia states ( Vieira et al. 2008; Winston et al. 2014; Almeida et al. 2015a).