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Summary In the florigemma-Bank Member of the Late Jurassic (Oxfordian) NW German Korallenoolith Formation moderately diverse assemblages of calcareous algae are present. The following taxa have been identified: “Porostromata”, Solenopora jurassica Brown, Solenopora helvetica Peterhans, Pycnoporidium lobatum Yabe and Toyama, Otternstella cf. lemmensis (Bernier), Salpingoporella? suentelensis n. sp...
Vengono presentati i risultati di uno studio sistematico condotto sulle alghe calcaree del Norico dei Monti del Matese (Campania settentrionale), per la prima volta segnalate in Italia. La ricca associazione composta da prevalenti pseudoudoteacee e precisamente: Garwoodia maxima, Garwoodia toomeji, Pseudoudotea magna, Jabrianella sp., oltre a Asterocalculus heraki, Heteroporella zankli eProbolocuspis...
The relationship between algae and depositional environment was studied in a limestone succession of Berriasian–Valanginian age. Several depositional environments were recorded from shallow subtidal to intertidal and supratidal, with salinity ranging from normal marine to fresh and/or supersaline water. The algal assemblages consist mainly of dasycladaleans, rivulariacean-type cyanobacteria and charophytes...
A characteristic microfacies of the Late Jurassic to Early Cretaceous allodapic Barmstein Limestone of the Northern Calcareous Alps are clasts of wackestones with numerous fragments of calcareous algae (“algal debris-facies”). According to dasycladale palaeocoenoses, several subtypes comprising different associations can be distinguished. One association is characterized by the debris of an unknown...
A new dasycladalean alga Salpingoporella? popgrigorei n. sp. was identified in Pădurea Craiului Mountains (northern Apuseni, Romania) in the Lower Aptian limestone of the Valea Bobdei Member. The new alga was found within the external platform coarse bioclastic facies with fragments of corals, sclerosponges, bivalves (including rudists), gastropods, echinoderms, brachiopods, and bryozoans. The micropaleontological...
After Barattolo (Abstracts of the 5th international symposium on fossil algae, 1991) and Barattolo and Romano (Bollettino della Societa Paleontologica Italiana, 44(3): 237–254, 2005) emended the diagnosis of the genus Linoporella Steinmann to include species with three orders of laterals, algae included formerly in this genus but with only two orders of laterals remained in open nomenclature. Comparisons...
The Lower Cretaceous Fahliyan Formation, part of the Khami Group, unconformably overlies the Hith Formation and is conformably overlain by the Gadvan Formation in the study area in southern Iran. The Fahliyan Formation is a reservoir rock in Zagros Basin. This formation was investigated by a detailed petrographic analysis in order to clarify the depositional facies and sedimentary environment in the...
Two new dasycladalean algae are described from the Gosau Group of the Northern Calcareous Alps in Austria. The tiny spicules of Acicularia? weisswasserensis n. sp. were found in foraminiferal wacke- to packstones associated with rudist limestones of the Weisswasser locality (Middle Coniacian), Lower Austria. The small globulous Terquemella? microsphaera n. sp. occurs in marls to marly limestones of...
Slightly curved calcitic plates with marginal pores recalling an aciculariacean alga are common in Late Tithonian reefal platform margin deposits of the Plassen Carbonate Platform of the Northern Calcareous Alps of Austria. Illustrated also from the Western Carpathians, these forms were assigned to the genus Acicularia, e.g., Acicularia elongata Carozzi. It is demonstrated that these algal parts are...
A rich association of calcareous algae is described from the Lower Cretaceous (Barremian–? Lower Aptian) deposits of the Taft Formation, located south of Aliabad (in the vicinity of Yazd, central Iran). The association mainly consists of dasycladaleans and bryopsidales (udoteaceans and gymnocodiaceans); additionally, rare “solenoporaceans” and cyanophyceans are present. Three new species are described:...
Bačinella irregularis was described by Radoičić (Bull Serv Géol Géophys Rep Serbie 17:87–92, 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 that excavated complex branching...
Halysis is a microfossil found in Ordovician to Devonian shallow-marine carbonates. Up to now, it is only known from thin-sections, and therefore its three-dimensional shape and its systematic position are controversial. Halysis is described as a chain-like microfossil with a shape of the single “chain links” ranging from circular to rounded rectangular. Given that Halysis commonly co-occurs with...
Calcareous algae and microproblematica have been studied in the Middle Permian part of the Dalan Formation in Dena Mountain, Zagros, southwest Iran. Murgabian (=Wordian) microfossils are the most diversified. The assemblages encompass, among the dasycladales, Anthracoporella spectabilis, Epimastopora piae, Epimastoporella japonica, E. likana, Paraepimastopora? cf. densipora n. comb., Gyroporella cf...
Previously unreported dasycladaleans and one morpho-taxon of assumed algal origin are described from Upper Turonian to Santonian rocks of the Lower Gosau Subgroup (LGS) of the Northern Calcareous Alps. A taxonomic inventory of green-algal/benthic foraminiferal assemblages shows that assemblages of “pure” carbonate environments are more diverse than those of siliciclastic and mixed siliciclastic-carbonate...
The Kellwasser Crisis represents one of the most severe extinction events in the Phanerozoic. The Šumbera section (Moravo-Silesian Basin, Moravian Karst) spans the Upper rhenana to Palmatolepis minuta minuta (or younger) conodont zones and corresponds to the upper part of a carbonate ramp with material derived from shallower areas. A rich association of calcareous algae, cyanobacteria, and microproblematica,...
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