Ramiporalia Schulga-Nesterenko, 1933
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 |
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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 |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Ramiporalia Schulga-Nesterenko, 1933
Ernst, Andrej, Wyse Jackson, Patrick N. & Aretz, Markus 2015 |
Ramiporalia robusta
DELVOLVE J. J. & MCKINNEY F. K. 1983: 327 |