New insights into Lithocodium aggregatum Elliott 1956 and Bacinella irregularis Radoičić 1959 (Late Jurassic–Lower Cretaceous): two ulvophycean green algae (?Order Ulotrichales) with a heteromorphic life cycle (epilithic/euendolithic)

Abstract

The Late Jurassic-Lower Cretaceous microorganisms incertae sedis Lithocodium aggregatum Elliott and

Dasycladalean green algae and some problematic algae from the Upper Triassic of the Nayband Formation (northeast Iran)

“…11N-O) Remarks: According to Schlagintweit et al (2010) the Triassic organisms, known as "Lithocodium aggregatum" Elliott is excluded from Lithocodium aggregatum Elliott (1956) by these authors. Here only the synonymy of Triassic "Lithocodium aggregatum" is listed below.…”

“…Cherchi & Schroeder (2006) favour, that Lithocodium is a calcified cyanobacterium rather than a foraminifer. Recently Schlagintweit et al (2010) discussed the systematic position of Lithocodium attributing it to "filamentous-septate heterotrichale ulvophycean alga". Assigning to "endolithic ulvophycean alga" these authors separate Bacinella from Lithocodium, which was synonymized by Banner et al (1990).…”

“…Assigning to "endolithic ulvophycean alga" these authors separate Bacinella from Lithocodium, which was synonymized by Banner et al (1990). With separation of Lithocodium and Bacinella the systematic classification proposed by Schlagintweit et al (2010) is followed here to describe the two following organisms.…”

Late Jurassic facies architecture of the Złoczew Graben: implications for evolution of the tectonic-controlled northern peri-Tethyan shelf (Upper Oxfordian–Lower Kimmeridgian, Poland)

“…7e). Moreover, oncoids also occur, with the microproblematica ulvophycean green alga Bacinella irregularis Radoičić 1959 (Schlagintweit et al 2010) and characteristic, boring foraminifera Troglotella incrustans (Fig. 7f).…”

An Upper Jurassic-Lower Cretaceous carbonate platform from the Vâlcan Mountains (Southern Carpathians, Romania): paleoenvironmental interpretation

“…The systematic position of Bacinella and Lithocodium was intensely disputed; the first one being usually interpreted as a cyanobacterium (Schäffer & SenowbariDaryan 1983;Maurin et al 1985;Camoin & Maurin 1988) while the second one was regarded as a Codiacean alga, lituolid foraminifer, or cyanobacterium (for a comparison of different taxonomic interpretations see Schlagintweit et al 2010). Recently, Schlagintweit et al (2010) re-interpreted these organisms as being ulvophycean green algae.…”