Jullienipora calypsoides ( Jullien, 1882 )

Reverter-Gil, O. & Fernández-Pulpeiro, E., 2005, A new genus of cyclostome bryozoan from the European Atlantic coast, Journal of Natural History 39 (25), pp. 2379-2387 : 2380-2383

publication ID	https://doi.org/ 10.1080/00222930400023743
persistent identifier	https://treatment.plazi.org/id/03D3D362-FFA1-BA2C-FE5C-FDEEFC5DFC4D
treatment provided by	Carolina
scientific name	Jullienipora calypsoides ( Jullien, 1882 )
status

Treatment

Jullienipora calypsoides ( Jullien, 1882) View in CoL

( Figures 1–4 View Figure 1 View Figure 2 View Figure 3 View Figure 4 )

Stomatopora calypsoides Jullien 1882, p 498 , Plate XIII, Figure 3 View Figure 3 ; Calvet 1906, p 463.

Material examined

Holotype (by original designation): MNHN-BRY-2799: ‘‘ Stomatopora calypsoides Jullien, 1882 . Travailleur, 14/6/1881, 1068 m. Coll. Jullien, 5t.10—n ° 184. Type’’. Corresponds to Travailleur 1881, D.2, 1st ser.: 41 ° 439N, 11 ° 399400W. One colony (figured).

Other material. MNHN-BRY-3749, part: ‘‘ Lagenipora edaeardsi Jullien. Mucronella longicollis Jullien. Travailleur , 14/6/ 1881. 1068 m. Coll. Jullien, 16t.14. Types’’. Corresponds to Travailleur 1881, D.2, 1st ser.: 41 ° 439N, 11 ° 399400W. Four colonies, one of them marked in red and figured.

MNHN-BRY-3752, part: ‘‘ Lagenipora edaeardsi Jullien 1882 . Mucronella longicollis Jullien 1882 . Travailleur 1881. Coll. Jullien. Types’’. Corresponds to Travailleur 1881, D.2, 1st ser.: 41 ° 439N, 11 ° 399400W. One colony.

MNHN-BRY-3900, part: ‘‘Travailleur, 1881, D.2 du 14/ 6. 1068 m. Coll. Jullien, 8t.18’’. Corresponds to Travailleur 1881, D.2, 1st ser.: 41 ° 439N, 11 ° 399400W. Two colonies, one of them marked in red and figured.

Voigtopora c alypso: (MNHN-LP-R.61800) ‘‘ Coll. d’Orbigny. Stomatopora Calypso d’Orbigny. Type. Sénonien. Saintes (Charente-Maritime). D’Orbigny 1852. Pal. Fr. Crétace´, T. 5: Bryozoaires, p. 841, pl. 630, fig. 5–8’’ .

Description

Colony encrusting, small, forming fine branches showing strictly uniserial growth, rectilinear or more or less curved.

Autozooids tubular, the central portion sometimes slightly dilated, smooth or slightly striated transversally, arranged in linear series, perfectly distinguishable from each other. Proximal portion adnate, distally raised up to form a peristome, often broken in the specimens examined, facing slightly forwards; zoecial aperture opens perpendicularly to the axis of the peristome.

Heterozooids very common, more or less ovoid, with frontal surface marked by conspicuous transverse striae; peristome narrower than in autozooids, angled at 30 ° to the substratum, with aperture facing forwards. Distally, under the peristome, a suture formed by the joining of two lateral folds can be observed. Heterozooids formed at right angles by lateral budding from the central or proximal portion of an autozooid; heterozooids always occur at the same side of the colony, usually the convex side when the branches are curved. Heterozooids are short when isolated (0.28 mm), or longer when branching occurs (0.34 mm).

Autozooids usually produced by distal budding from a proximal autozooid. Dichotomies not observed in any of the specimens studied. The only means of generating new branches is by lateral branching, which follows a very characteristic pattern observed three times: a heterozooid is generated from the lateral side of an autozooid; from the distal extremity of this heterozooid an autozooid is budded, which turns sharply at 90 °; a second autozooid is formed from the proximal part of the autozooid by lateral budding, orientated in the opposite direction to the first autozooid ( Figures 2C View Figure 2 , 3B View Figure 3 ).

Ancestrula unknown. In two samples (MNHN-BRY-2799, MNHN-BRY-3900) apparent regeneration from a fractured branch was observed ( Figures 2A View Figure 2 , 3C View Figure 3 , 4 View Figure 4 ).

Measurements (in mm)

The following abbreviations are used: Az, autozooid; Hz, heterozooid; P, peristome; PHz, heterozooid peristome; L, length; l, width.

MNHN-BRY-2799 (holotype): LAz: 0.37¡0.04 (n 59); lAz: 0.14¡0.014 (n 59); LHz: 0.28 (0.27–0.29) (n 53); lHz: 0.20 (0.17–0.21) (n 53). MNHN-BRY-3749: LAz: 0.37¡0.03 (n 511); lAz: 0.15¡0.016 (n 511); LHz: 0.34 (0.31–0.40) (n 54); lHz: 0.20 (0.18–0.22) (n 54). MNHN-BRY-3900: LAz: 0.39¡0.04 (n 510); lAz: 0.17¡0.016 (n 510); LHz: 0.33 (0.29–0.38) (n 53); lHz: 0.20 (0.18–0.22) (n 53); LP: 0.12 (0.09–0.16) (n 56); lP: 0.10 (0.09–0.12) (n 56); LPHz: 0.12 (n 51); lPHz: 0.08 (n 51) .