Jump to content

Palaeoglomus

From Wikipedia, the free encyclopedia

Palaeoglomus
Spore and arbuscle of Palaeoglomus strotheri, from Douglas Lake Member of Lenoir Limestone, at Douglas Dam, Tennessee[1]
Scientific classification
Kingdom:
Division:
Class:
Family:
Genus:
Palaeoglomus

Redecker et al. (2002)[2]
Type species
Palaeoglomus grayi
Redecker et al. (2002)

Palaeoglomus ("ancient ball") is a genus of microscopic mycorrhizal fossil, found in palynological preparations of rocks which separate out organic remains by acid dissolution.

Description

[edit]

Palaeoglomus has large spherical to ellipsoidal spores with multilayered walls, as well as irregularly shaped vesicles, attached to aseptate hyphae.

Species

[edit]

Palaeoglomus grayi type species from the Middle Ordovician Guttenberg Formation near Platteville, Wisconsin.[2]

Palaeoglomus boullardi from the Early Devonian Rhynie Chert bear Rhynie, Scotland.[3]

Palaeoglomus strotheri from the Middle Ordovician (Darriwilian, 460 million years old) Douglas Lake Member of the Lenoir Limestone from Douglas Dam, Tennessee.[1]

Biological affinities

[edit]

Palaeoglomus is similar to modern mycorrhizae such as Glomus.

References

[edit]
  1. ^ a b Retallack, G.J. (2019). "Ordovician land plants and fungi from Douglas Dam, Tennessee". The Palaeobotanist. 68: 1–33.
  2. ^ a b Redecker, D.; Kodner, R.; Graham, L.E. (2002). "Palaeoglomus grayi from the Ordovician". Mycotaxon. 84: 33–37.
  3. ^ Strullu-Derrien, C.; Kenrick, P.; Pressel, S.; Duckett, J.G.; Rioult, J.P.; Strullu, D.G. (2014). "Fungal associations in Horneophyton ligneri from the Rhynie Chert (c. 407 million year old) closely resemble those in extant lower land plants: novel insights into ancestral plant–fungus symbioses". New Phytologist. 203 (3): 964–9797. doi:10.1111/nph.12805. PMID 24750009.