Novaculadon, new multituberculate from Cretaceous of England + Huangfuchuansuchus, new capitosaur from Lower Triassic of China

[Ben Creisler]

Ben Creisler

bcre...@gmail.com

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Novaculadon mirabilis gen. et sp. nov.

Benjamin T. Weston, Steven C. Sweetman, Jake Kean, Charles Wood, David M. Martill & Roy E. Smith (2025)
A new multituberculate (Mammalia, Allotheria) from the Lulworth Formation (Cretaceous, Berriasian) of Dorset, England
Proceedings of the Geologists' Association 101128
doi: https://doi.org/10.1016/j.pgeola.2025.101128
https://www.sciencedirect.com/science/article/pii/S0016787825000379


A new genus and species of plagiaulacid multituberculate (Mammalia, Allotheria, Multituberculata) is described from the Cherty Freshwater Beds, Warbarrow Tout Member of the Lower Cretaceous Lulworth Formation of the Purbeck Group, Dorset, United Kingdom. The new taxon is represented by a complete, well preserved left dentary containing the incisor, p2–4, with alveoli for m1–2. This new specimen is the most complete multituberculate material yet recovered from the Purbeck Group. It is also the first mammal to be recovered from the so-called ‘Flint Bed’ (DB97).

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Huangfuchuansuchus haojiamaoensis gen. et sp. nov.

Jian-Ye Chen & Jun Liu (2025)
A basal member of Capitosauria from the Lower Triassic Heshanggou Formation, China
Palaeoworld 200988
doi: https://doi.org/10.1016/j.palwor.2025.200988
https://www.sciencedirect.com/science/article/abs/pii/S1871174X25000812


In the Triassic of North China and Xinjiang, fossils of temnospondyls are common but fragmentary; no specimens have been confidently assigned to the genus level. Recently, a well-preserved temnospondyl skull with mandible was collected from the Heshanggou Formation of Jungar Banner, Nei Mongol, and a new taxon, Huangfuchuansuchus haojiamaoensis n. gen. n. sp. is established based on this specimen. The new taxon is diagnosed by bilobed anterior palatal vacuity with smoothly convex posterior margin, V-shaped transvomerine tooth rows, a shallow notch on the lateral margin of the subtemporal window, cultriform process extension approaching only anterior margin of interpterygoid vacuities, crista muscularis of the parasphenoid confluent in mid-line and anteromedial-posterolaterally positioned. It shows some features of Benthosuchidae but is placed as a basal member of Capitosauria based on phylogenetic analysis and character comparisons.

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