Ramiporalia Schulga-Nesterenko, 1933

Ernst, Andrej, Wyse Jackson, Patrick N. & Aretz, Markus, 2015, Bryozoan fauna from the Mississippian (Visean) of Roque Redonde (Montagne Noire, southern France), Geodiversitas 37 (2), pp. 151-213 : 168-170

publication ID

https://doi.org/ 10.5252/g2015n2a2

publication LSID

urn:lsid:zoobank.org:pub:BA9B2FF0-9D3B-44AF-894F-419DE5AE4C13

persistent identifier

https://treatment.plazi.org/id/038D87E1-F741-FFBC-A262-FA60E6F5F915

treatment provided by

Felipe

scientific name

Ramiporalia Schulga-Nesterenko, 1933
status

 

Genus Ramiporalia Schulga-Nesterenko, 1933 View in CoL

TYPE SPECIES. — Ramiporalia dichotoma Schulga-Nesterenko, 1933 by original designation. Lower Permian ; Northern Urals .

DIAGNOSIS. — Colonies consisting of bifoliate dichotomous branches. Autozooecia hemispherical in transverse section at mesotheca, growing in two to five rows on each side of the mesotheca. Apertures with lunaria. Thin mesotheca protruding as ridge on the circular reverse side and as sharp keel on peaked obverse side. Thin-walled autozooecia usually separated by vesicular skeleton. Vesicles small in endozone and in inner exozone.

OCCURRENCE. — Carboniferous; Europe, North America, Australia.

COMPARISON

Ramiporalia Schulga-Nesterenko, 1933 View in CoL differs from Goniocladia Etheridge, 1876 View in CoL in having freely branching colony instead of reticulate one in the latter genus. Ramiporalia View in CoL differs from Ramipora Toula, 1875 View in CoL in having freely branching colony instead of pinate one with secondary and tertiary branches deriving from the main branch in the latter genus. Furthermore, mesotheca in Ramiporalia View in CoL protrudes only on the celluliferous side as low cairna, whereas mesotheca in Ramopora protrudes both on celluliferous and non-celluliferous sides.

Ramiporalia robusta Delvolve & McKinney, 1983 View in CoL ( Figs 14 View FIG F-H, 15A-D, 16A-C; Appendix)

Ramiporalia robusta Delvolve & McKinney, 1983: 327 View in CoL , 328, pl. 2, figs 8, 9, text-fig. 3.

MATERIAL. — SMF 21.838- SMF 21.848, TCD.60336, 60337, 60338, 60341, 60343.

OCCURRENCE. — Carboniferous, Mississippian (upper Visean); Roque Redonde (Montagne Noire, southern France). Carboniferous, Mississippian (Serpukhovian); Pyrénées, France.

DESCRIPTION

Reticulate colony consisting of anastomosing bifoliate branches. Branches 1.23-3.67 mm wide and 0.49-1.64 mm thick. Autozooecia tubular, semicircular in transverse section at their bases, relatively short, budding in 5-7 rows from each side of thin mesotheca, opening on both sides of the median carina. Basal diaphragms rare. Mesotheca consisting of granularprismatic material, 0.02-0.03 mm thick. Autozooecial apertures arranged regularly in 5-7 diagonal rows on both sides of a median carina, rounded, having 0.030-0.45 mm thick peristome.Lunaria moderately developed, directed proximally. Autozooecial walls 0.005 -0.010 mm thick, granular-prismatic. Extrazooecial skeleton consisting of columnar calcite crystals oriented perpendicularly to the colony surface.Vesicular skeleton moderately developed, consisting of low small vesicles with flattened roofs, concentrated mostly in endozone.

COMPARISON

Ramiporalia robusta Delvolve & McKinney, 1983 View in CoL differs from R. symmetrica McKinney, 1972 View in CoL from the Mississippian of Alabama, USA, in thicker branches and larger distances between aperture centres (0.36-0.54 mm vs 0.25-0.50 mm in R. symmetrica View in CoL ).

Order TREPOSTOMATA Ulrich, 1882 Suborder AMPLEXOPORINA Astrova, 1965 View in CoL Family STENOPORIDAE Waagen & Wentzel, 1886 View in CoL

SMF

Forschungsinstitut und Natur-Museum Senckenberg

Kingdom

Animalia

Phylum

Bryozoa

Class

Stenolaemata

Order

Cystoporida

Family

Goniocladiidae

Loc

Ramiporalia Schulga-Nesterenko, 1933

Ernst, Andrej, Wyse Jackson, Patrick N. & Aretz, Markus 2015
2015
Loc

Ramiporalia robusta

DELVOLVE J. J. & MCKINNEY F. K. 1983: 327
1983
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