Jump to content

Lower cambrian redlichiid trilobite


connorp

Recommended Posts

Found this guy while cleaning out a drawer today. From the Wulongqing Formation (Lower Cambrian, Series 2 Stage 4) in China. I would have guessed Eoredlichia but the long spines (on the third thorax segment I think) are throwing me off. The specimen is quite small, barely 1cm at the longest dimension, so maybe an early developmental stage? It was a bit hard to photograph, let me know if more pictures are needed. Thanks.

 

eoredlichia.thumb.jpg.55ba80b9b11594bf2c02901ca91a2191.jpg

Link to comment
Share on other sites

31 minutes ago, connorp said:

The specimen is quite small, barely 1cm at the longest dimension, so maybe an early developmental stage?

 

:thumbsu:

image.thumb.png.1d7e237e65a8d570d5323922c024e493.png

 

Dai, T., Zhang, X. 2013

Ontogeny of the Redlichiid Trilobite Eoredlichia intermediata from the Chengjiang Lagerstätte, Lower Cambrian, Southwest China. Lethaia, 46(2):262-273  PDF LINK

  • I found this Informative 3

image.png.a84de26dad44fb03836a743755df237c.png

Link to comment
Share on other sites

The matrix is consistent with Chengjiang.  According to the literature Eoredlichia is not reported from the Wulongqing Fm. 

 

image.thumb.png.9249b846d7590fd29d3c3e77066abc52.png

 

Chen, F., Zhang, Z., Betts, M.J., Zhang, Z., Liu, F. 2019

First report on Guanshan Biota (Cambrian Stage 4) at the stratotype area of Wulongqing Formation in Malong County, Eastern Yunnan.

Geoscience Frontiers, 10:1459-1476  PDF LINK

  • I found this Informative 4

image.png.a84de26dad44fb03836a743755df237c.png

Link to comment
Share on other sites

10 minutes ago, piranha said:

The matrix is consistent with Chengjiang.  According to the literature Eoredlichia is not reported from the Wulongqing Fm. 

 

Chen, F., Zhang, Z., Betts, M.J., Zhang, Z., Liu, F. 2019

First report on Guanshan Biota (Cambrian Stage 4) at the stratotype area of Wulongqing Formation in Malong County, Eastern Yunnan.

Geoscience Frontiers 10:1459-1476  PDF LINK

Any idea what those Xs mean, Scott?

Link to comment
Share on other sites

The slots with an X show the absence of taxa in corresponding west versus east zones.

  • I found this Informative 2

image.png.a84de26dad44fb03836a743755df237c.png

Link to comment
Share on other sites

3 hours ago, piranha said:

The matrix is consistent with Chengjiang.  According to the literature Eoredlichia is not reported from the Wulongqing Fm.

Thanks for pointing that out. I looked over the several dozen papers on the Guanshan biota I have and could not find any Eoredlichia specimens reported either.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...