The core of Sporocarpon asteroides, an enigmatic fungal fossil from the Carboniferous - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen Year : 2023

The core of Sporocarpon asteroides, an enigmatic fungal fossil from the Carboniferous

Abstract

The various types of spherical microfossils collectively termed fossil fungal “sporocarps” exhibit basic congruities in morphology that have been used to suggest they all may belong to the same higher taxonomic category. Both the Ascomycota and zygomycete fungi have been discussed in this respect, but features that precisely delimit the nature and taxonomic position of these fossils have not been documented. Here, we present two new specimens of the Pennsylvanian “sporocarp” Sprocarpon asteroides from the Lower Coal Measures of Great Britain. Both provide evidence that a spore with a multi-layered wall was formed in this structure by blastic inflation of a hyphal tip. The outer spore walls appear to be continuous with the wall of the subtending hypha, while the inner wall (the spore wall proper) more likely developed de novo. Sporocarpon asteroides is interpreted as a unisporic sporocarp with a pseudoparenchymatous peridium, likely with affinities to the Glomeromycota. This discovery supports the notion that the fossil fungal “sporocarps” include several biologically different structures.
Fichier principal
Vignette du fichier
Sporocarpon Text R1.pdf (595.58 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-04200039 , version 1 (25-10-2023)

Identifiers

Cite

Michael Krings, Carla J. Harper, Anne-Laure Decombeix, Jean Galtier. The core of Sporocarpon asteroides, an enigmatic fungal fossil from the Carboniferous. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2023, 309 (2), pp.111-122. ⟨10.1127/njgpa/2023/1153⟩. ⟨hal-04200039⟩
43 View
15 Download

Altmetric

Share

Gmail Facebook X LinkedIn More