Jump to content

Fern or cycad fossil


Crazyhen

Recommended Posts

It matches in the Osmundaceae family, prevalent in the Mesozoic of Liaoning.  This paper illustrates the typical morphology.

 

figures from:

 

Cheng, Y.M., Wang, Y.F., & and Li, C.S. 2007

A new species of Millerocaulis (Osmundaceae) from the Middle Jurassic of China and its implication for evolution of Osmunda.

International Journal of Plant Sciences, 168(9):1351-1358  PDF LINK

 

image.thumb.png.3f74518dca060dd2405ffb4672836519.png

image.png.a84de26dad44fb03836a743755df237c.png

Link to comment
Share on other sites

4 minutes ago, piranha said:

It matches in the Osmundaceae family, prevalent in the Mesozoic of Liaoning.

For those of us that do not understand "plantese"...

 a translation from wiki.

 


Osmundaceae
Temporal range: Late Permian to present
Osmunda regalis
Scientific classification
Kingdom:    Plantae
Subkingdom:    Embryophyta
(unranked):    Tracheophyta
(unranked):    euphyllophytes
Class:    Polypodiopsida
Subclass:    Polypodiidae
Order:    Osmundales Link
Family:    Osmundacea
The Osmundaceae (royal fern family) is a family of four to six extant genera and 18–25 known species. It is the only fern family of the order Osmundales an order in the class Polypodiopsida (Filicopsida, Pteridopsida, or Leptosporangiate ferns) or in some classifications the only order in the class Osmundopsida. This is an ancient (known from the Upper Permian) and fairly isolated group that is often known as the "flowering ferns" because of the striking aspect of the ripe sporangia in Claytosmunda, Osmunda, Osmundastrum, and Plensium (subtribe Osmundinae[1]). In these genera the sporangia are borne naked on non-laminar pinnules, while Todea and Leptopteris (subtribe Todinae[1]) bear sporangia naked on laminar pinnules. Ferns in this family are larger than most other ferns.

Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

My Fossil collection - My Mineral collection

My favorite thread on TFF.

 

 

Link to comment
Share on other sites

Link to comment
Share on other sites

Agree with permineralised fern axis, most likely from the Osmundales order. The recent review by Bomfleur et al. (2017) may be useful for further identification, as you can only distinguish between the various genera in the Osmundaceae on the basis of anatomical characteristics.

Searching for green in the dark grey.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...