Podozamites

Superregnum: Eukaryota
Regnum: Plantae
Divisio: Tracheophyta
Divisio: Pinophyta
Classis: Pinopsida
Ordo: Pinales

Familia: Podocarpaceae
Genus: †Podozamites
Species: †P. accuratus – †P. acuminatus – †P. alexanderi – †P. allectus – †P. arcticus – †P. cuspiformis – †P. distans – †P. dongurmensis – †P. ellipticus – †P. notabilis – †P. pinnatus – †P. taenioides
Name

†Podozamites Braun in Münster, Beitr. Petref.-Kunde 6: 36. Dec 1843, nom. cons.

Type species: †P. distans (C. Presl) Braun — designated by G. Lebour, Cat. Hutton Coll. 117. 6 Apr 1878.
Synonyms

†Preissleria C. Presl in Sternberg, Vers. Fl. Vorwelt 2: 192. Sep 1838, nom. rej.

Type species: †P. antiqua C. Presl

†Bensonia Buckman in Murch., Outl. Geol. Cheltenham, ed. 2: 93. 1844.

Type species: †B. ovata Buckman

†Lilia Buckman in Murch., Outl. Geol. Cheltenham, ed. 2: 93. 1844, nom. illeg. (non Lillia Unger, 1842)

Type species: †L. lanceolata Buckman

†Naiadea Buckman in Murch., Outl. Geol. Cheltenham, ed. 2: 93. 1844

Type species: †N. obtusa Buckman
References

Doweld, A.B. 2022. (2889) Proposal to conserve the name Podozamites against Preissleria (fossil Pinophyta: Podozamitales). Taxon 71(2): 484–485. DOI: 10.1002/tax.12708 Reference page.

Podozamites is an extinct genus of fossil conifer leaves. In its broader sense, it has been used as a morphogenus (form taxon) to refer to any broad leaved multi-veined conifer leaves, some of which probably belong to extant conifer groups including Araucariaceae. In a more narrow sense, it has been used to refer to a probably monophyletic group of deciduous broad leafed voltzialean conifers that existed in the Northern Hemisphere, particularly East Asia and Siberia during the Late Triassic to early Late Cretaceous, where it formed part of wet coal swamp communities.

Description
Reconstruction of Podozamities harrisii with the associated cones of Krassilovia mongolica from the Early Cretaceous of Mongolia

Podozamites leaves are thought to have been regularly shed. Podozamites leaves sensu stricto are associated with conifer cones of the genera Swedenborgia, Cycadocarpidium, and Krassilovia, which were suggested in 2020 to constitute the distinct family Krassiloviaceae within the Voltziales.[1] The paracyctic stomata and other morphological features of Krassiloviaceae are simiar to those of Gnetales, suggesting that they may be closely related.[1]
Evolutionary history

Podozamites sensu stricto first became widespread at mid-latitudes during the Late Triassic. During the Early Jurassic in East Asia, it formed almost monospecific assemblages where it was the dominant plant. Over the course of the Jurassic, the distribution shifted northwards in response to the drying of the lower latitudes, becoming restricted to between 60 and 30 degrees north by the Early Cretaceous. Podozamites senus stricto would become extinct during the Turonian stage of the Late Cretaceous, coincident with the arrival of flowering plants into the Siberian region.[2]
Species

A number of species within the genus were listed by Fossilworks, as of May 2021: Podozamites agardhianus, Podozamites distans, Podozamites lanceolatus, Podozamites longifolius, Podozamites mucronatus, Podozamites pinnatus and Podozamites schenki.[3] Agathis jurassica, initially identified as Podozamites lanceolatus, has also been placed in this genus.[4] Podozamites harrissii from the Early Cretaceous of Mongolia is associated with Krassilovia mongolica, while Podozamites schenkii is associated with the Triassic-Jurassic Swedenborgia cryptomerioides and Triassic Cycadocarpidium erdmanni.[1] It has been noted that extant Agathis (Araucariaceae) and Nageia (Podocarpaceae) qualify as members of Podozamites under its morphogenus sense.[2]
References

Herrera, Fabiany; Shi, Gongle; Mays, Chris; Ichinnorov, Niiden; Takahashi, Masamichi; Bevitt, Joseph J.; Herendeen, Patrick S.; Crane, Peter R. (2020-01-15). Peppe, Daniel (ed.). "Reconstructing Krassilovia mongolica supports recognition of a new and unusual group of Mesozoic conifers". PLOS ONE. 15 (1): e0226779. Bibcode:2020PLoSO..1526779H. doi:10.1371/journal.pone.0226779. ISSN 1932-6203. PMC 6961850. PMID 31940374.
Pole, Mike; Wang, Yongdong; Bugdaeva, Eugenia V.; Dong, Chong; Tian, Ning; Li, Liqin; Zhou, Ning (December 2016). "The rise and demise of Podozamites in east Asia—An extinct conifer life style". Palaeogeography, Palaeoclimatology, Palaeoecology. 464: 97–109. Bibcode:2016PPP...464...97P. doi:10.1016/j.palaeo.2016.02.037.
†Podozamites Braun 1843 (conifer) at fossilworks.org
Frese, M.; Gloy, G.; Oberprieler, R.G. & Gore, D.B. (2017). "Imaging of Jurassic fossils from the Talbragar Fish Bed using fluorescence, photoluminescence, and elemental and mineralogical mapping". PLOS ONE. 12 (6): e0179029. Bibcode:2017PLoSO..1279029F. doi:10.1371/journal.pone.0179029. PMC 5459505. PMID 28582427.