I've tried to limit this to the plants most distinct from modern species and ones that existed during the Mesozoic. All the placeable plants are also taller than the general forest canopy, so I don't really expect this to go anywhere.
Pleuromeia (Early-Middle Triassic)
This plant didn't coexist with dinosaurs, though it was a dominant plant across most of the world for it's short existence. I think 1m tall is the general height estimatefor this quillwort relative.
P. sternbergi was apparently originally described from the Solling Fm. of Germany, though is reported throughout Europe and Asia.
P. dubia was originally found in the Burgersdorp Fm. of South Africa, but is also known from a few Australian localities, the Culvida Sandstone (aka Culvida Soak) of Western Australia, as well as the Camden Haven Claystone and Newport Fm. of New South Wales.
P. sternbergi traditional reconstruction...............P. dubia...............................................2011 generic reconstruction (though I'm not sure if it's accurate today or for all species)
Bjuvia (Middle-Late Triassic)
A plant endemic to europe, related to cycads.
B. simplex comes from the Late Triassic of Sweden, in fact the genus is named after the town of Bjuv in Scania, Sweden. I'd say the Höganäs Fm. (Bjuv member?) is the most likely source, having similar plants and being close by, though I don't have the resources to find out for sure.
B. simplex,. Left is 5m tall and right is 3m tall apparently.
Dicroidium (Permian-Early Jurassic)
The main feature of this compared with modern species is the fact the leaves branch off once in a Y pattern, though generally this wouldn't effect appearance on a macroscopic scale, with the leaves attaching to branches as with a normal tree. It's a common Gondwanan seed fern (found in the Southern continents and India) and is also reported from China.
D. odontopteroides was first described from Tasmania, Australia, but has also been reported from South Africa, South America, New Zealand and Antarctica, being in basically every Middle-Late Triassic plant locality on those continents as far as I can tell, being possibly least common in Africa.
D. zuberi is a bit less common, though more prominent in the early Triassic I think. It's found in South Africa, South America, Australia (Culvida Soak & Newport Fm.), India (Parsora Fm.) & Antarctica (Fremouw Fm., Falla Fm. & Lashly Fm.) Zuberia zuberi may be a synonym used in South America.
The Victorian subset of Dicroidium species.............................................................................................A & B, D. odontopteroides leaf attached to branch. C, Ginkgo analogue. SS=Lateral Short shoot
Neocalamites (Permian-Late Jurassic)
While a dwarf compared to the 30m or so tall Calamites, it's still a sizeable Horsetail at a max of about 2m tall. The peak of it's diversity is apparently the Middle-Late Triassic.
N. merianii is known from Europe, an example being the Middle Triassic Erfurt Fm. of Saxony-Anhalt, Germany. This species and N. asperrimus "were probably branched, arborescent plants with long and narrow leaves attached in whorls at the nodes".
N. horridus is a sizeable species from the Late Triassic Yancaogou Fm. of Liaoning, China that even has prickles to deter herbivores.
Classical N. merianii............Fossil of N. horridus, Scale: 10cm
Tempskya (Early-Late Cretaceous)
A fern where the stalks clump together to make a sort of wood. There are many species, though all are known as fossil wood, so there's no species choice to really make as such. They are found mostly in the northern hemisphere, though some species are found Argentina and Australia. Cedar Mountain Fm. is a notable site already in the game for this plant.
Weichselia (Early Jurassic?-Late Cretaceous)
A mangrove tree fern, it is a common find for the Early Cretaceous. It has been recorded from all the major continents apart from Australia and Antarctica, being mostly on the shore of the Tethys sea (Mediterranean + Ocean between India and Asia). Prop roots are what make it a mangrove tree for me, but they are optional by the looks.
Two sites already in game that have this genus are the Wessex Fm. and Bahariya Fm.
2013? W. reticulata..............................2016 W. reticulata.............................................................W. sp. with prop roots
Williamsonia (Late Triassic-Late Cretaceous)
A tree with similar leaves to cycads, Williamsonia is the name of the cones, though the arrangement of cones and leaves is still a bit up in the air as far as I can tell. The leaves are known as Ptilophyllum, as it is for most members of the Bennettitales.
W. gigas was the first discovered and is known from the middle Jurassic Saltwick Fm. of Scarborough, UK.
Traditional reconstruction.......................Tree forms of Williamsoniaceae (Ptilophyllum)
Pleuromeia (Early-Middle Triassic)
This plant didn't coexist with dinosaurs, though it was a dominant plant across most of the world for it's short existence. I think 1m tall is the general height estimatefor this quillwort relative.
P. sternbergi was apparently originally described from the Solling Fm. of Germany, though is reported throughout Europe and Asia.
P. dubia was originally found in the Burgersdorp Fm. of South Africa, but is also known from a few Australian localities, the Culvida Sandstone (aka Culvida Soak) of Western Australia, as well as the Camden Haven Claystone and Newport Fm. of New South Wales.



P. sternbergi traditional reconstruction...............P. dubia...............................................2011 generic reconstruction (though I'm not sure if it's accurate today or for all species)
Bjuvia (Middle-Late Triassic)
A plant endemic to europe, related to cycads.
B. simplex comes from the Late Triassic of Sweden, in fact the genus is named after the town of Bjuv in Scania, Sweden. I'd say the Höganäs Fm. (Bjuv member?) is the most likely source, having similar plants and being close by, though I don't have the resources to find out for sure.

B. simplex,. Left is 5m tall and right is 3m tall apparently.
Dicroidium (Permian-Early Jurassic)
The main feature of this compared with modern species is the fact the leaves branch off once in a Y pattern, though generally this wouldn't effect appearance on a macroscopic scale, with the leaves attaching to branches as with a normal tree. It's a common Gondwanan seed fern (found in the Southern continents and India) and is also reported from China.
D. odontopteroides was first described from Tasmania, Australia, but has also been reported from South Africa, South America, New Zealand and Antarctica, being in basically every Middle-Late Triassic plant locality on those continents as far as I can tell, being possibly least common in Africa.
D. zuberi is a bit less common, though more prominent in the early Triassic I think. It's found in South Africa, South America, Australia (Culvida Soak & Newport Fm.), India (Parsora Fm.) & Antarctica (Fremouw Fm., Falla Fm. & Lashly Fm.) Zuberia zuberi may be a synonym used in South America.

The Victorian subset of Dicroidium species.............................................................................................A & B, D. odontopteroides leaf attached to branch. C, Ginkgo analogue. SS=Lateral Short shoot
Neocalamites (Permian-Late Jurassic)
While a dwarf compared to the 30m or so tall Calamites, it's still a sizeable Horsetail at a max of about 2m tall. The peak of it's diversity is apparently the Middle-Late Triassic.
N. merianii is known from Europe, an example being the Middle Triassic Erfurt Fm. of Saxony-Anhalt, Germany. This species and N. asperrimus "were probably branched, arborescent plants with long and narrow leaves attached in whorls at the nodes".
N. horridus is a sizeable species from the Late Triassic Yancaogou Fm. of Liaoning, China that even has prickles to deter herbivores.

Classical N. merianii............Fossil of N. horridus, Scale: 10cm
Tempskya (Early-Late Cretaceous)
A fern where the stalks clump together to make a sort of wood. There are many species, though all are known as fossil wood, so there's no species choice to really make as such. They are found mostly in the northern hemisphere, though some species are found Argentina and Australia. Cedar Mountain Fm. is a notable site already in the game for this plant.


Weichselia (Early Jurassic?-Late Cretaceous)
A mangrove tree fern, it is a common find for the Early Cretaceous. It has been recorded from all the major continents apart from Australia and Antarctica, being mostly on the shore of the Tethys sea (Mediterranean + Ocean between India and Asia). Prop roots are what make it a mangrove tree for me, but they are optional by the looks.
Two sites already in game that have this genus are the Wessex Fm. and Bahariya Fm.


2013? W. reticulata..............................2016 W. reticulata.............................................................W. sp. with prop roots
Williamsonia (Late Triassic-Late Cretaceous)
A tree with similar leaves to cycads, Williamsonia is the name of the cones, though the arrangement of cones and leaves is still a bit up in the air as far as I can tell. The leaves are known as Ptilophyllum, as it is for most members of the Bennettitales.
W. gigas was the first discovered and is known from the middle Jurassic Saltwick Fm. of Scarborough, UK.




Traditional reconstruction.......................Tree forms of Williamsoniaceae (Ptilophyllum)
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