Puercosuchus traverorum n. gen. n. sp.: a new malerisaurine azendohsaurid (Archosauromorpha: Allokotosauria) from two monodominant bonebeds in the Chinle Formation (Upper Triassic, Norian) of Arizona
Puercosuchus traverorum n. gen. n. sp.: a new malerisaurine azendohsaurid (Archosauromorpha: Allokotosauria) from two monodominant bonebeds in the Chinle Formation (Upper Triassic, Norian) of Arizona
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普埃尔科鳄 (Puercosuchus traverorum)
DOI：
10.1017/jpa.2022.49
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发表时间：
2022
影响因子：
1.4
通讯作者：
Stocker, Michelle R.
中科院分区：
文献类型：
--
作者：
Marsh, Adam D.;Parker, William G.;Nesbitt, Sterling J.;Kligman, Ben T.;Stocker, Michelle R.
非始祖龙、始祖龙是潜龙类爬行动物的一个副系群，是全球中、晚三叠世大陆生态系统的重要成员。在这个类群中包括了阿兹多萨龙，这是异种恐龙的一个支系(夸伊新龙和阿兹多萨龙+三龙科)，它们保留了拟形的始龙形体后平面，但进化了不同的颅部特征，这些特征汇聚到后来的恐龙解剖上，包括像蜥脚龙一样的边缘牙齿和像角龙一样的后眼角。在这里，我们描述了一种新的Malerisaine azdohsaurus，来自于蓝色台地段钦勒组(晚三叠世，约218-220 Ma)的两个单优势骨层；第一个出现在石化森林国家公园，保存了至少8个大小不等的个体，第二个出现在亚利桑那州圣约翰斯附近。Puercosuchus traverorum n.Gen.N.sp.是一种食肉动物，与印度Maleri组的Malerisaurus robinsonae和德克萨斯州西部Dockum Group的Malerisaurus langstoni有密切联系。Percosuchus traverorum n.Gen.中的含牙成分N.sp.确认一些被认为代表早期恐龙的晚三叠世牙齿形态类型无法与类似Puercosuchus的Malerisaine分类群区分开来，很可能与之有关。这些来自亚利桑那州北部的骨床支持了这样的假设，即非始祖龙状的始祖龙形体在诺里安中期附近具有局部多样性，并在三叠纪末大灭绝之前经历了一次灭绝事件，恰好与石化森林国家公园确认的阿达马尼亚-鲁弗尔边界不谋而合。这一早期分化的分类群(诺里安)的时代相对较晚，这表明在世界各地的中、晚三叠世化石记录中，甲虫类的多样性没有得到充分的代表。Uuid：http://zoobank.org/e6eeefd2-a0ae-47fc-8604-9f45af8c1147.
Non-archosaur archosauromorphs are a paraphyletic group of diapsid reptiles that were important members of global Middle and Late Triassic continental ecosystems. Included in this group are the azendohsaurids, a clade of allokotosaurians (kuehneosaurids and Azendohsauridae + Trilophosauridae) that retain the plesiomorphic archosauromorph postcranial body plan but evolved disparate cranial features that converge on later dinosaurian anatomy, including sauropodomorph-like marginal dentition and ceratopsian-like postorbital horns. Here we describe a new malerisaurine azendohsaurid from two monodominant bonebeds in the Blue Mesa Member, Chinle Formation (Late Triassic, ca. 218–220 Ma); the first occurs at Petrified Forest National Park and preserves a minimum of eight individuals of varying sizes, and the second occurs near St. Johns, Arizona. Puercosuchus traverorum n. gen. n. sp. is a carnivorous malerisaurine that is closely related to Malerisaurus robinsonae from the Maleri Formation of India and to Malerisaurus langstoni from the Dockum Group of western Texas. Dentigerous elements from Puercosuchus traverorum n. gen. n. sp. confirm that some Late Triassic tooth morphotypes thought to represent early dinosaurs cannot be differentiated from, and likely pertain to, Puercosuchus-like malerisaurine taxa. These bonebeds from northern Arizona support the hypothesis that non-archosauriform archosauromorphs were locally diverse near the middle Norian and experienced an extinction event prior to the end-Triassic mass extinction coincidental with the Adamanian-Revueltian boundary recognized at Petrified Forest National Park. The relatively late age of this early-diverging taxon (Norian) suggests that the diversity of azendohsaurids is underrepresented in Middle and Late Triassic fossil records around the world. UUID: http://zoobank.org/e6eeefd2-a0ae-47fc-8604-9f45af8c1147.
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DOI：
--
发表时间：
2009
期刊：
Comput. Oper. Res.
影响因子：
--
作者：
S. Evans
通讯作者：
S. Evans
影响因子：
0.8
作者：
F. R. Parrington
通讯作者：
F. R. Parrington
影响因子：
3.5
作者：
Pritchard AC;Nesbitt SJ
通讯作者：
Nesbitt SJ
DOI：
10.1130/b35485.1
发表时间：
2020-07
期刊：
GSA Bulletin
影响因子：
--
作者：
通讯作者：
--
影响因子：
1.4
作者：
O. Rieppel
通讯作者：
O. Rieppel