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[dinosaur] Allosaurus neotype + "Liaoningotitan sinensis" + perinatal hadrosaurids from New Mexico






Ben Creisler
bcreisler@gmail.com


This post catches up on some odds and ends...


Matthew T. Carrano, Mark A. Loewen and Serjoscha W. Evers (2018)
Comment (Case 3506) â Conservation of Allosaurus Marsh, 1877 (Dinosauria, Theropoda): additional data in support of the proposed neotype for its type species Allosaurus fragilis Marsh, 1877.
The Bulletin of Zoological Nomenclature 75():59-64. 2018Â
http://www.bioone.org/doi/ref/10.21805/bzn.v75.a014

The full version of the comment is available as a free pdf through Research Gate:

https://www.researchgate.net/profile/Serjoscha_Evers/publication/325469450_Comment_Case_3506_-_Conservation_of_Allosaurus_Marsh_1877_Dinosauria_Theropoda_additional_data_in_support_of_the_proposed_neotype_for_its_type_species_Allosaurus_fragilis_Marsh_1877_see_BZN_671_53_Cas/links/5b17982c45851547bba3b4e3/Comment-Case-3506-Conservation-of-Allosaurus-Marsh-1877-Dinosauria-Theropoda-additional-data-in-support-of-the-proposed-neotype-for-its-type-species-Allosaurus-fragilis-Marsh-1877-see-BZN-671-53.pdf?origin=publication_list




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Liaoningtitan (or Liaoningotitan)...

I posted news items from Germany about a cast of the skeleton of this sauropod that is on display at the Frankfurt Airport. An offlist response asked if Liaoningtitan is still a nomen nudum.Â


I did a bit of research to check on the status and background.

As far as I can determine, a formal description has not been published, although the sauropod has been mentioned in some Chinese publications and a skeleton is mounted at theÂLiaoning Paleontology Museum.

Chinese name "Liaoning Julong" -- translated in Latin form as "Liaoningtitan" in most Chinese sources, but also as "Liaoningotitan" in other sources.


It's mentioned in this paper in Chinese with a free pdf:


SUN Ge & SHENG Xia (2016)
Discussion on scientifically excavating large dinosaur fossils in the field.
Journal of Shenyang Normal University (Natural Science Edition) 34(2): 129-132
http://cbimg.cnki.net/Editor/2016/0622/sysx/056178e6-0a85-430d-8282-8a50c1c429d1.pdf

For better carrying out the fossil excavations scientifically and in accordance with the law in China in the newperiod, the authors discuss on the scientific method for excavating the large dinosaur fossils in the field,taking the samples of the experiences of the scientific teams of Shenyang Normal University in the fieldwork in Liaoning and Xinjiang,China for the last decade. The suggested method includes that under the premise of seriously carrying out the "National Regulations for the Protection of fossils inChinaâ, the excavations should be 1) strictly fulfilling official application procedures for the excavations, 2) organizing a high level of fossil excavation team led by scientists, 3) adopting scientific method of excavation, and 4) combining the excavations with their subsequent research on the fossils. The working experience provides the examples worthy of reference for the fossil excavations including the large dinosaur fossils in China, and would benefit the fossil protection and developmental utilization in the new period.

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Using a quick Google Translate pass (with some tweaks):

The "Liaoningtitan Zhou" (MS*)Â discovered near Xiaobeigou [Village] in Beipiao, Liaoning,
has a body length of 15 m, which for the first time fills the gap of large [sauropod] dinosaur fossils that were not completely preserved in Liaoning. The newly discovered âLiaoning Dragonâ has become the largest dinosaur ever discovered in Liaoning, and its complete skull fossil is also the first discovery of a titanosauriform skull in Asia. The discovery of this large dinosaur in Liaoning provides new fossil evidence for the study of the early evolution and radiation of giant [sauropod] dinosaurs [10].


The source for Zhou appears to be this book from 2011:


The Fossil Record of 3 Billion Years in Liaoning, China

http://www.mlr.gov.cn/dzhj/gswhs/hszl/hscbw/201110/t20111008_981117.htm

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For photos of the Liaoning Paleontology Museum mount:


http://ln.sina.com.cn/news/b/2013-05-15/064241119.html

http://www.gov.cn/jrzg/2013-05/14/content_2401905.htm

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Note this updates this mention below, which indicates a much bigger size. The Chinese source says 15 m (50 ft) but the latest German news stories give the length as 12 m (40 ft):

https://www.deviantart.com/paleo-king/art/List-of-Biggest-Dinosaurs-662925540

4. "Liaoningtitan" (unofficial name, not yet published. Partial skeleton, appears to missing the original arms and some cervicals and caudals at least). Giant euhelopodid. Dimensions unknown, but appears to be around 75-80 ft. long. Mass unknown but likely around 30+ tons?



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The cast mounted at the Frankfurt Airport is a gift to the Senckenberg Natural History Museum in Frankfurt to commemorate its 200th anniversary, given by China through the Chinese paleontologist Sun Ge. The Senckenberg Museum is currently undergoing a renovation and the sauropod cast will be displayed there when it reopens. The cast is the first display of the dinosaur outside of China.

In German:

http://die-welt-baut-ihr-museum.de/lioaningotitan-ein-riesen-geschenk-fuer-senckenberg/

For various photos and a comparison of "Liaoningotitan" with Argentinosaurus, see the photos section of these news pages:

http://www.senckenberg.de/root/index.php?page_id=136

http://die-welt-baut-ihr-museum.de/neuigkeiten/

The German news sources are referring to the dinosaur as "Liaoningotitan sinensis," suggesting a formal publication of the name at some point with a type species. The age is also given as 120 million years ago.

Â
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Fossil Record 5: New Mexico Museum of Natural History and Science Bulletin 74Â(2016)


Entire volume can be downloaded from Google Books at this link:

Fossil Record 5: New Mexico Museum of Natural History and Science Bulletin 74

https://books.google.com/books?id=bMJQDwAAQBAJ&printsec=frontcover#v=onepage&q&f=false

Note that the text can be searched and can be copied! (Most Google Books stuff in pdf form is image only.)

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Individual articles have been posted as pdfs for download at the museum's website. However, the pdfs are image only and cannot be searched or copied.Â


Sort on bulletin number to get newest stuff at the end.


http://econtent.unm.edu/cdm/search/collection/bulletins


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Many of the papers in the 2016 volume that are related to dinosaurs and dinosaur tracks have already been posted on the DML with links to free pdfs.


One paper not yet mentioned on the DML:



Merrile Guenther, Mateusz Wosik & Stephanie M, McCarthy (2016)
Perinatal hadrosaurid postcranial elements from the Upper Cretaceous Kirtland Formation, San Juan Basin, New Mexico.
Sullivan, R.M. and Lucas, S.G., eds., 2016, Fossil Record 5. New Mexico Museum of Natural History and Science Bulletin 74: 73-77
http://econtent.unm.edu/cdm/singleitem/collection/bulletins/id/7038/rec/119



An examination of specimens collected from the San Juan Basin in 1922 by Charles H. Sternberg has provided new evidence of the presence of hadrosaurid perinates in the region. The collection, housed at the Field Museum of Natural History, is composed of isolated elements from the Kirtland Formation of San Juan County, New Mexico. The perinatal individuals are represented by isolated elements including a scapula and femur, PR 1295. The smallest element, a scapula that is approximately 64 mm in length, is comparable in size to those of other hadrosaurid perinate individuals. The scapula is well preserved and lacks abrasion that would signify transport, suggesting that the perinatal elements were buried near their origin, potentially near a nesting site. These elements represent only the second known occurrence of perinatal hadrosaurids in the San Juan Basin.