Shenqiornis: Reconstructing a Mesozoic bird skull
O’Connor and Chiappe 2011
traced (Fig. 1) and reconstructed (Fig. 2) the skull of the enantiornithine bird Shenqiornis mengi (Early Cretaceous; Wang et al. 2010; DNHM D2950-2951). This is one of the few enantiornithines with substantial skull material.
O’Connor and Chiappe used freehand techniques
to reconstruct Shenqiornis (Fig. 2). This is almost never a good idea as assumptions and biases tend to flavor freehand reconstructions.
Long time readers know, it is far better to use the DGS method
(Fig. 3) and simply transfer precisely traced shapes to the reconstruction without bias or forethought. It also permits others to see exactly what you saw in a scattered, crushed fossil.
Given this data,
Sheqiornis nests with Pengornis (Fig. 4) in the large reptile tree (LRT, 1703+ taxa) based on skull traits alone.
If you think things here have been a little strange
over the last 3 weeks, you’re right. My large aging computer zapped out. Meanwhile I was able to handle posts using a small MacBook Pro, but was not able to get to my Adobe graphics software for DGS tracing and reconstructing. I was likewise unable to update the LRT. Things are back to normal now (see Fig. 3 above), so we continue!
References
O’Connor JK and Chiappe LM 2011. A revision of enantiornithine (Aves: Ornithothoraces) skull morphology. Journal of Systematic Palaeontology, 9:1, 135-157, DOI: 10.1080/14772019.2010.526639
Wang X, O’Connor J, Zhao B, Chiappe LM, Gao C and Cheng X 2010. New species of Enantiornithes (Aves: Ornithothoraces) from the Qiaotou Formation in Northern Hebei, China. Acta Geologica Sinica, 84(2):247-256.
Source: https://pterosaurheresies.wordpress.com/2020/07/01/shenqiornis-reconstructing-a-mesozoic-bird-skull/
Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.
"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
Please Help Support BeforeitsNews by trying our Natural Health Products below!
Order by Phone at 888-809-8385 or online at https://mitocopper.com M - F 9am to 5pm EST
Order by Phone at 866-388-7003 or online at https://www.herbanomic.com M - F 9am to 5pm EST
Order by Phone at 866-388-7003 or online at https://www.herbanomics.com M - F 9am to 5pm EST
Humic & Fulvic Trace Minerals Complex - Nature's most important supplement! Vivid Dreams again!
HNEX HydroNano EXtracellular Water - Improve immune system health and reduce inflammation.
Ultimate Clinical Potency Curcumin - Natural pain relief, reduce inflammation and so much more.
MitoCopper - Bioavailable Copper destroys pathogens and gives you more energy. (See Blood Video)
Oxy Powder - Natural Colon Cleanser! Cleans out toxic buildup with oxygen!
Nascent Iodine - Promotes detoxification, mental focus and thyroid health.
Smart Meter Cover - Reduces Smart Meter radiation by 96%! (See Video).