Presence Of Nemathecia In Parachaetetes Asvapatii Pia, 1936 (Rhodophyta, Gigartinales?): Reproduction In ‘Solenoporaceans’ Revisited

  title={Presence Of Nemathecia In Parachaetetes Asvapatii Pia, 1936 (Rhodophyta, Gigartinales?): Reproduction In ‘Solenoporaceans’ Revisited},
  author={Julio Aguirre and Filippo Barattolo},
Parachaetetes asvapatii is a very common algal species in the Palaeogene deposits of the Tethyan realm and has been considered as a member of the heterogeneous family Solenoporaceae. This attribution is exclusively based on features of the vegetative tissue, since no reproductive structures have ever been recovered. However, detailed analysis of Late Cretaceous–Eocene material from Turkey has revealed nemathecia‐like structures in one specimen attributable to P. asvapatii. These nemathecia are… 

On the fossil alga Elianella elegans Pfender & Basse, 1948, and its so-called lookalikes, with description of Elianella brasiliana n.sp. Revision of the Juliette Pfender Collection. Part 1

The genus Elianella Pfender & Basse, 1948, gets unique features that make it easy to discriminate; the species Cordilites cretosus and Parachaetetes asvapatii should not be confused and is described from Albian limestones of Brazil.


Phylogenetic analyses of 18S rDNA gene data for Choreonema thuretii and available data for other coralline red algae indicated that Chore onema belongs to the same lineage as other taxa of Corallinales possessing tetra/bisporangial conceptacles with multiporate plates, which led to the conclusion that all taxaof Corallinals possessing multiporate conceptacles belong to a distinct family, the Hapalidiaceae.

Cryptobiotic foraminifera from the Paleocene Kambühel formation (northern calcareous Alps, Austria)

Cryptobiotic foraminifera are described from Paleocene shallow-water limestones of the Kambühel Formation (“Kambühelkalk”) of the south-eastern part of the Northern Calcareous Alps/Austria. They have

Upper Aptian calcareous algae from Padurea Craiului (Northern Apuseni mountains, Romania)

A study of calcareous strata previously assigned to the Barremian-Early Aptian interval in the northwestern part of P?durea Craiului, (Apuseni Mountains), led to the identification of a

Solenoporaceen aus den obertriassischen (Nor) Riffkalken des Taurusgebirges (Antalya-Gebiet, Südtürkei)

From the Upper Triassic (Norian) reef limestones north and west of Antalya (Taurus Mts., Turkey) the red algae (Solenoporaceans)Solenopora undata n. sp.,Parachaetetes clatratus n. sp.,Parachaetetes

New insights on the red alga Archaeolithophyllum and its preservation from the Pennsylvanian of the Cantabrian Zone (NW Spain)

The new species Archaeolithophyllumasymmetricum nov. sp., from the Bachende Formation (Pennsylvanian, Cantabrian Zone, NW Spain), is described herein using cathodoluminescence microscopy. Under

Upper Jurassic-lowermost Cretaceous benthic algae from Tethys and the European platform: a case study from Poland

Los carbonatos con algas calcareas de aguas someras del Jurasico superior - base del Cretacico de Polonia representan parte del registro del Tethys (Zonas Externas de los Carpatos) y su margen pasivo

Contemporary taxonomic perspectives of fossil Coralline Red Algae: their possible origin and evolution

The present contribution deals with the remarkable changes that have taken place since 1993 in the taxonomic aspects of fossil coralline algae and the modern trends of research in this context.



Peyssonnelia immersa sp. nov. (Cryptonemiales, Rhodophyta) from the British Isles and France, with a survey of infrageneric classification

Peyssonnelia immersa sp. nov. is described from the British Isles and France. The species has been found intertidally on bedrock and stones and on mobile substrata in the sublittoral. It differs from

Recherches sur le genre Peyssonnelia (Rhodophycées). I. Peyssonnelia rosa-marina sp. nov. et Peyssonnelia bornetii sp. nov.

P. rosa marina is distinguished from P. polymorpha (Zanard.) Schmitz in having multicellular rhizoids; the two species are very similar in appearance, but the results show they also differ in several other points.

Growth-forms in Non-geniculate Coralline Red Algae (Coralliinales, Rhodophyta)

It is shown that an intergrading network of growth-forms with 10 focal points is present: unconsolidated, encrusting, warty, lumpy, fruticose, discoid, layered, foliose, ribbon-like and arborescent.

Calcification of Encrusting Aragonitic Algae (Peyssonneliaceae): Implications for the Origin of Late Paleozoic Reefs and Cements

ABSTRACT Encrusting aragonitic calcareous algae of the family Peyssonneliaceae are the largest group of calcified red algae outside the well-known Mg calcite Corallinaceae. They are distributed

The Coralline Red Algae: An Analysis of the Genera and Subfamilies of Nongeniculate Corallinaceae

An overview of nongeniculate "corallinaceae" collection, preservation and examination of material taxonomic literature on nongeniculate "corallinaceae" historical analysis features diagnostic of

On Cretaceous bioconstructions: Composition and evolutionary trends of crust-building associations

SummaryBioconstructions are built by colonial to solitary sessile organisms which develop a variety of different morphologies due to genetic, ecologic, and environmental controls. Crust-building

Handbuch der systematischen Botanik

THE first edition of this work appeared in 1901, and during the decade that has elapsed since, important advances have been made in the investigation of many groups in the vegetable kingdom, more

Larger Foraminiferal Biostratigraphy of the Tethyan Paleocene and Eocene

Abundance, diversity, and high evolutionary rates make larger foraminifera useful biostratigraphic tools for datation of sediments deposited in shallow marine platforms. Twenty shallow benthic zones

Escalating herbivory and resulting adaptive trends in calcareous algal crusts

  • R. Steneck
  • Environmental Science, Geography
  • 1983
Four anatomical characters unique to corallines may have aided their rapid expansion into shallow reef environments and allowed them to withstand the more intense levels of grazing that evolved.