Bryozoan fauna from the Mississippian (Visean) of Roque Redonde (Montagne Noire, southern France) Author Ernst, Andrej Author Wyse Jackson, Patrick N. Author Aretz, Markus text Geodiversitas 2015 2015-06-30 37 2 151 213 http://dx.doi.org/10.5252/g2015n2a2 journal article 10.5252/g2015n2a2 1638-9395 4534998 urn:lsid:zoobank.org:pub:BA9B2FF0-9D3B-44AF-894F-419DE5AE4C13 Baculopora redondensis n. sp. ( Figs 27 B-H; 28A, B; Appendix) ETYMOLOGY. — The species name refers to the type locality Roque Redonde. HOLOTYPE . — SMF 21.947 . PARATYPES . — SMF 21.926- SMF 21.946, SMF 21.948- SMF 21.955, TCD.60333, 60335, 60350-60353. TYPE LOCALITY . — Roque Redonde (Montagne Noire, southern France ). TYPE HORIZON . — Carboniferous, Mississippian (upper Visean). DIAGNOSIS. — Straight dichotomous branches; autozooecia in 2 to 6 rows; autozooecial apertures with 4-11 variably sized nodes; reverse surface smooth with 10 to 15 longitudinal rows of microstylets. DESCRIPTION Colonies of straight dichotomous branches, with undulating lateral margins; lateral branches not observed; branches oval to flattened in transverse section, 0.63-0.98 mm wide, 0.5- 0.6 mm thick. Autozooecia arranged in 2 to 6 rows; apertures circular to longitudinally oval, surrounded by 4-11 variably sized nodes; apertural nodes 0.015 -0.035 mm in diameter; spaced 3 to 4 diameters apart; interapertural walls carry three wavy rows of microstyles; autozooecial chambers polygonal in mid-tangential section, generally hexagonal (diamond-shaped), relatively short and high; lined with thin laminar skeleton; terminal diaphragms occurring; reverse surface smooth with 10 to 15 longitudinal rows of microstylets; microstylets 0.005 - 0.010 mm in diameter. COMPARISON Baculopora redondensis n. sp. differs from B. megastoma ( M’Coy, 1844 ) in wider branches ( 0.63-0.98 mm vs 0.33-0.74 mm in B. megastoma ). Furthermore, Baculopora redondensis differs in wider spacing of autozooecial apertures (distances between aperture centres along branch 0.42-0.73 mm vs 0.33-0.53 mm in B. megastoma ).