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Eomurruna yurrgensis
Discussion
The specific name is derived from the Bidyara yurrga, a hole in the ground, and the Latin suffix ensis, meaning of or belonging to (a place), which is a reference to The Crater, the locality near Bluff in Queensland, Australia, where most of the specimens were collected. LSID: urn:lsid:zoobank.org:act:4FA81673-0CE1-4BA3-8329-B30EF45CC548.
Taxonomy
Eomurruna yurrgensis was named by Hamley et al. (2021). Its type specimen is QMF 18335 (Figs 3, 5A–D, 6, 14, 15, 18–22). An articulated skeleton, missing most of the right limbs and the tail and is a 3D body fossil. Its type locality is QML 215, Duckworth Creek, which is in an Induan terrestrial mudstone in the Arcadia Formation of Australia. It is the type species of Eomurruna.
Synonymy list
| Year | Name and author |
|---|---|
| 2020 | Eomurruna yurrgensis Hamley et al. p. 7 |
| 2021 | Eomurruna yurrgensis Hamley et al. p. 7 |
| 2023 | Eomurruna yurrgensis Poropat et al. p. 146 |
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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.
†Eomurruna yurrgensis Hamley et al. 2021
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. Hamley et al. 2020 | Small procolophonid (skull length not exceeding 35 mm) distinguished from all other procolophonids by the following autapomorphies: (1) six to eight blunted, monocuspid maxillary teeth, circular in basal cross-section (mesiodistal length equivalent to labiolingual length), with broad bases (up to 86% of basal-apical length) but sharp apexes; (2) lateral surface of the maxilla bearing shallow, sinuous rugosities; (3) basicranium featuring a robust, pyramidal, alar process, rising from the clinoid process, forming the posterolateral border of the sella turcica; (4) presence of a vertical, inferior process, posterior to the alar process, in the prootic; (5) shallow, midconical tubercle located between the dorsum sellae and the anterior margin of the basioccipital; (6) canalis semicircularis anterior of the prootic not reaching the external surface of the bone; (7) bilobate end of the ventral ramus of the opisthotic, lobes being separated by a deep sulcus; (8) humerus bearing a prominent tuberosity, anterior to the long axis of the bone, on its proximal articular surface; (9) femur sigmoidal, curving dorsally proximally and ventrally distally. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||