Palaeoglomus
| Palaeoglomus Temporal range:
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| Spore and arbuscle of Palaeoglomus strotheri, from Douglas Lake Member of Lenoir Limestone, at Douglas Dam, Tennessee[1] | |
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| Genus: | Palaeoglomus Redecker et al. (2002)[2]
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| Type species | |
| Palaeoglomus grayi Redecker et al. (2002)
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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]
- ^ a b Retallack, G.J. (2019). "Ordovician land plants and fungi from Douglas Dam, Tennessee". The Palaeobotanist. 68: 1–33.
- ^ a b Redecker, D.; Kodner,R.; Graham, L.E. (2002). "Palaeoglomus grayi from the Ordovician". Mycotaxon. 84: 33–37.
- ^ 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.