Neogyroporella? gawlicki n.sp., a New Dasycladale from the Upper Jurassic–Lower Cretaceous Lärchberg Formation of the Northern Calcareous Alps, Austria

A new Dasycladale (calcareous green alga) is described as Neogyroporella? gawlicki n.sp. from the Upper Jurassic–Lower Cretaceous “Lärchberg Formation” of the Northern Calcareous Alps, Austria. It is distinguished from the type-species Neogyroporella elegans YABE & TOYAMA (Upper Jurassic of Japan; currently the only representative of the genus), by its distinctly smaller dimensions and a higher number of laterals. The generic attribution of the new taxon is discussed, including similarities/differences to allied genera, especially Humiella SOKAC & VELIC. Neogyroporella? gawlicki n.sp. is so far only known from the Northern Calcareous Alps. In addition, some other Dasycladales accompanying Neogyroporella? gawlicki n.sp. are also illustrated

Iberopora bodeuri GRANIER & BERTHOU 2002 (incertae sedis) from the Plassen Formation (Kimmeridgian–Berriasian) of the Tethyan Realm

Iberopora bodeuri GRANIER & BERTHOU 2002, formerly known as “crust problematicum” (SCHMID, 1996) is described from the Plassen Formation (Kimmeridgian–Berriasian) of the Northern Calcareous Alps (NCA). Here, it occurs either as an incrustation on corals/stromatoporoids or it forms nodular masses (“solenoporoid morphotype”). It is typically found in the fore-reef facies of the platform margin, and (upper) slope deposits where autochthonous dasycladales are absent. Water turbulence appears to control the morphological development of Iberopora. Thus, flat crusts appear in less agitated settings. The crusts are almost always accompanied by calcareous sponges/sclerosponges and abundant micro-encrusters, mostly Koskinobullina socialis CHERCHI & SCHROEDER and “Tubiphytes” morronensis CRESCENTI. The stratigraphic range of Iberopora known to date is Oxfordian–Berriasian. In addition to the Northern Calcareous Alps, it has been reported from the epicontinental area of NW-Germany, the northern margin of the Penninic and Tethyan ocean (Slovakia, Switzerland, Spain, Poland, Portugal) and the southern Tethyan domain (Greece, Romania, Yugoslavia). Until other morphological elements (e.g. reproductive organs or protoconch) are found, its systematic position remains uncertain. Currently, it is considered questionably to be an ancestral rhodophyceae or acervulinid-like foraminifera

Glomospirella cantabrica n. sp., and other benthic foraminifera from Lower Cretaceous Urgonian-type carbonates of Cantabria, Spain : biostratigraphic implications

A new benthic foraminifer is described as Glomospirella cantabrica n. sp. from several sections of the Upper Aptian Reocín Formation and one occurrence in the lowermost Albian Las Peñosas Formation of Cantabria (northern Spain). It represents a rather large-sized Glomospirella with up to eight planispiral whorls observed in lagoonal wackestones and packstones. The Upper Aptian (Late Gargasian-Clansayesian) age of the Reocín Formation is indicated by the co-occurrence with other benthic foraminifers, i.e., orbitolinids. Further data for the biostratigraphy of the Aptian-p.p. Albian shallow-water carbonates of the North Cantabrian Basin are provided. The rareness of dasycladalean green algae in these deposits is also highlighted

Coptocampylodon? rhaeticus n.sp., a New Problematic Microfossil (“incertae sedis”) from the Rhaetian Dachstein Limestone of the Northern Calcareous Alps (Germany, Austria)

A new problematic microfossil is described as Coptocampylodon? rhaeticus n.sp. from the Rhaetian Dachstein Limestone of the Northern Calcareous Alps. The new species is composed of a long cylindrical and an irregular rounded body, both showing narrow axial cavity. It is similar to Coptocampylodon? elliotti RADOICIC 1969 from the Cenomanian of Montenegro, but lacks the longitudinal grooves in the cylindrical part. In the Alpine Dachstein Limestone it has been detected at several localities where it occurs as an abundant constituent of biosparitic limestones along with the benthic foraminifera Triasina hantkeni MAJZON, Aulotortus sinuosus WEYNSCHENK, Duostominidae and dasycladales Griphoporella curvata (GÜMBEL) and Diplopora adnetensis FLÜGEL

New data on some type-species of Maastrichtian–Paleocene Dasycladales (green algae) from Iran Part III. Rostroporella Segonzac 1971

Rostroporella oviformis Segonzac represents the type species of the monospecific genus Rostroporella described from the Thanetian of France (type locality). Well preserved material of this large-sized dasycladale from the Paleocene of Iran (central and east Iran, and Zagros Zone, SW Iran), allows a better characterization of the algal thallus, e.g.,shape of the thallus, reproductive structures and the ranges of biometric parameters. The thallus is thought to be moniliform with ovoid articles. The reproduction with comparably large, elongated gametophores disposed laterally above the first order laterals refers to the goniosporate type. The suprageneric position of Rostroporella, previously placed within the family Polyphysaceae (formerly Acetabulariaceae), is discussed and transferred into the family Bornetellaceae

Remarks on Bacinella irregularis Radoicic, 1959 (type species B. irregularis) and its representatives.

Bačinella irregularis was described by RADOIČIĆ (1959) as an alga incertae sedis. Based on material from the Lower Aptian of the western Maestrat Basin (Spain), the genus Bačinella with its various species is revised; an emended diagnosis is given as well as a detailed description. Bačinella is interpreted as an organism excavating complex branching galleries into biogenic hard substrates, e.g., the crusts of Lithocodium aggregatum ELLIOTT (such as in the holotype specimen of B. irregularis). Its morphology and boring pattern is comparable to that of modern filamentous-septate euendolithic green algae of the class Ulvophyceae. These forms, however, are microfilamentous (microborer) whereas Bačinella has larger filament diameter. Nearly all of the 'Bačinella irregularis' occurrences reported in the literature do not belong to this taxon, but represent irregular vesicular crusts ('bacinellid' fabrics = Bačinella irregularis auct. non) that display some resemblances with modern microbial mats

Glomospirella cantabrica n. sp., and other benthic foraminifera from Lower Cretaceous Urgonian-type carbonates of Cantabria, Spain : biostratigraphic implications

A new benthic foraminifer is described as Glomospirella cantabrica n. sp. from several sections of the Upper Aptian Reocín Formation and one occurrence in the lowermost Albian Las Peñosas Formation of Cantabria (northern Spain). It represents a rather large-sized Glomospirella with up to eight planispiral whorls observed in lagoonal wackestones and packstones. The Upper Aptian (Late Gargasian-Clansayesian) age of the Reocín Formation is indicated by the co-occurrence with other benthic foraminifers, i.e., orbitolinids. Further data for the biostratigraphy of the Aptian-p.p. Albian shallow-water carbonates of the North Cantabrian Basin are provided. The rareness of dasycladalean green algae in these deposits is also highlighted