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Novaculadon mirabilis
Taxonomy
Novaculadon mirabilis was named by Weston et al. (2025). It is considered to be a form taxon. Its type specimen is NHMUK PV M 119716, a mandible (complete left dentary containing the incisor, premolars 2–4, with alveoli for molars 1–2), and it is a 3D body fossil. Its type locality is Durlston Bay (DB87), which is in a Berriasian/Berriasian lagoonal marl in the Lulworth Formation of the United Kingdom. It is the type species of Novaculadon.
Synonymy list
| Year | Name and author |
|---|---|
| 2025 | Novaculadon mirabilis Weston et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Novaculadon mirabilis Weston et al. 2025
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. T. Weston et al. 2025 | Virtually complete plagiaulacid sensu Hahn and Hahn (2004) multituberculate dentary with particularly robust features. Referred to Plagiaulacidae based on lower dental formula, 1.0.3.2, p4 rectangular in lateral view, p4–p3 length ratio >2, and lower incisor completely covered in enamel. The following combination of characteristics represents autapomorphies: exceptionally deep horizontal ramus
below p4; diastema between the incisor and p2 forms a dorsally concave notch; incisor significantly more robust and less procumbent than other Plagiaulacidae; pointed incisor apex; p2 well-developed compared to other plagiaulacids; p4 eight cusped and lacking basal denticulation; p4–p3 mesiodistal length ratio of 2.16. Differs from Bolodon minor and B. falconeri in a p4–p3 length ratio of 2.16, rather than 2.0 for the former and 2.2 for the latter. Differs from Bolodon in the shape of the incisor apex, and a shorter, concave diastema. Differs from Plagiaulax becklesii in the boss-shaped, rather than recurved, mandibular condyle, a larger diastema, the gross morphology of the mandibular ramus, and a larger, cusped p2. Differs from all plagiaulacids in a much more robust, and significantly less procumbent lower incisor, and a greater sub-p4 depth of the dentary. |