Project 4713: A. I. Crichton, T. H. Worthy, A. B. Camens, G. J. Prideaux. 2022. A new ektopodontid possum (Diprotodontia, Ektopodontidae) from the Oligocene of central Australia, and its implications for phalangeroid interrelationships. Journal of Vertebrate Paleontology. 42 (3):e2171299.
Abstract
The Ektopodontidae are an enigmatic group of phalangeroid marsupials known from the late Oligocene to the Early Pleistocene of Australia. Although represented to date only by isolated teeth and several partial dentaries and maxillae, their highly distinctive dental morphology has allowed three genera and nine species to be distinguished. Here, we describe possibly the geologically oldest ektopodontid, Chunia pledgei sp. nov., from the Oligocene Pwerte Marnte Marnte fossil locality of central Australia. Phylogenetic analyses of Phalangeroidea, using 80 primarily dental characters framed by a molecular scaffold, support placement of the new taxon in the genus Chunia. The analyses failed to recover species of the genus Durudawiri in a monophyletic Miralinidae, indicating that they require systematic review. We also transfer the purported basal phalangerid Eocuscus sarastamppi to Miralinidae (Miralina sarastamppi comb. nov.). Additionally, the M1 specimens used to describe the Early to Middle Miocene miralinid genus Barguru, and three species therein, are re-identified as deciduous third premolars from early macropodoids. These findings imply that the Miralinidae are known only from the late Oligocene, whereas the oldest named phalangerids are from the Early Miocene. From a functional consideration of ektopodontid dental morphology, we infer support for prior suggestions of a granivorous and/or frugivorous diet for them. The relative stage-of-evolution expressed by the new taxon is comparable to those in the lower faunal zones of the Namba and Etadunna formations, which supports a late Oligocene age for the Pwerte Marnte Marnte assemblage.Read the article »
Article DOI: 10.1080/02724634.2023.2171299
Project DOI: 10.7934/P4713, http://dx.doi.org/10.7934/P4713
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 1921 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 80 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 212 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:80/0 |
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MorphoBank Project 4713
MorphoBank Project 4713
- Creation Date:
08 June 2023 - Publication Date:
10 August 2023 - Project views: 3261
- Matrix downloads: 1
Authors' Institutions
- Flinders University
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 32 | 7 | 7 | 80 | 0 | 0 | 1921 (1694, 0, 227) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29303' (32 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Durudawiri inusitatus Last Modified in 06/08/23 | 8 | 65 | 65 | 0 | 7 | 0 | 0 | 1 |
[2] † Djilgaringa gillespiei Last Modified in 06/08/23 | 30 | 39 | 39 | 0 | 11 | 0 | 0 | 1 |
[3] † Djaludjangi yadjana Last Modified in 06/08/23 | 6 | 59 | 59 | 0 | 15 | 0 | 0 | 1 |
[4] † Palaeopotorous priscus Last Modified in 06/08/23 | 26 | 42 | 42 | 0 | 12 | 0 | 0 | 1 |
[5] Burramys parvus Last Modified in 06/08/23 | 1 | 66 | 66 | 0 | 13 | 0 | 0 | 1 |
[6] † Burramys wakefieldi Last Modified in 06/08/23 | 19 | 54 | 54 | 0 | 7 | 0 | 0 | 1 |
[7] † Eocuscus sarastamppi Last Modified in 06/08/23 | 39 | 37 | 37 | 0 | 4 | 0 | 0 | 1 |
[8] † Hypsiprymnodon dennisi Last Modified in 06/08/23 | 9 | 60 | 60 | 0 | 11 | 0 | 0 | 1 |
[9] † Lekaneleo roskellyae Last Modified in 06/08/23 | 5 | 59 | 59 | 0 | 16 | 0 | 0 | 1 |
[10] Trichosurus vulpecula Last Modified in 06/08/23 | 0 | 73 | 70 | 0 | 10 | 0 | 0 | 1 |
[11] Trichosurus dicksoni Last Modified in 06/08/23 | 6 | 65 | 64 | 0 | 10 | 0 | 0 | 1 |
[12] † Wyulda squamicaudata Last Modified in 06/08/23 | 5 | 67 | 66 | 0 | 9 | 0 | 0 | 1 |
[13] Phalanger orientalis Last Modified in 06/08/23 | 0 | 71 | 70 | 0 | 10 | 0 | 0 | 1 |
[14] Spilocuscus maculatus Last Modified in 06/08/23 | 0 | 71 | 70 | 0 | 10 | 0 | 0 | 1 |
[15] † Onirocuscus silvacultrix Last Modified in 06/08/23 | 2 | 69 | 68 | 0 | 10 | 0 | 0 | 1 |
[16] † Strigocuscus celebensis Last Modified in 06/08/23 | 3 | 68 | 67 | 0 | 10 | 0 | 0 | 1 |
[17] Ailurops ursinus Last Modified in 06/08/23 | 1 | 70 | 69 | 0 | 10 | 0 | 0 | 1 |
[18] † Chunia pledgei Last Modified in 06/08/23 | 38 | 41 | 41 | 0 | 1 | 0 | 0 | 1 |
[19] † Chunia sp. cf. C. illuminata Last Modified in 06/08/23 | 56 | 23 | 23 | 0 | 1 | 0 | 0 | 1 |
[20] † Chunia illuminata Last Modified in 06/08/23 | 32 | 47 | 47 | 0 | 1 | 0 | 0 | 1 |
[21] † Ektopodon tommosi Last Modified in 06/08/23 | 18 | 61 | 61 | 0 | 1 | 0 | 0 | 1 |
[22] † Ektopodon stirtoni Last Modified in 06/08/23 | 14 | 65 | 65 | 0 | 1 | 0 | 0 | 1 |
[23] † Ektopodon serratus Last Modified in 06/08/23 | 30 | 49 | 49 | 0 | 1 | 0 | 0 | 1 |
[24] † Ektopodon litolophus Last Modified in 06/08/23 | 44 | 35 | 35 | 0 | 1 | 0 | 0 | 1 |
[25] † Ektopodon ulta Last Modified in 06/08/23 | 45 | 34 | 34 | 0 | 1 | 0 | 0 | 1 |
[26] † Darcius duggani Last Modified in 06/08/23 | 44 | 35 | 35 | 0 | 1 | 0 | 0 | 1 |
[27] † Miralina doylei Last Modified in 06/08/23 | 6 | 72 | 72 | 0 | 2 | 0 | 0 | 1 |
[28] † Miralina minor Last Modified in 06/08/23 | 40 | 38 | 38 | 0 | 2 | 0 | 0 | 1 |
[29] Petaurus breviceps Last Modified in 06/08/23 | 2 | 63 | 63 | 0 | 15 | 0 | 0 | 1 |
[30] Distoechurus pennatus Last Modified in 06/08/23 | 2 | 61 | 61 | 0 | 17 | 0 | 0 | 1 |
[31] † Durudawiri anfractus Last Modified in 06/08/23 | 44 | 29 | 29 | 0 | 7 | 0 | 0 | 1 |
[32] † Chunia omega Last Modified in 06/08/23 | 74 | 6 | 6 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 3261 | |
Project overview | 169 | |
Documents list | 101 | |
Matrix views | 113 | Matrix landing page (106 views); Supplementary_File_2_morph_matrix_tnt.R2 (7 views); |
Media views | 827 | Media search (368 views); M862546 (65 views); M862547 (65 views); M862548 (67 views); M862549 (62 views); M862550 (66 views); M862551 (71 views); M862552 (63 views); |
Bibliography | 81 | |
Views for media list | 219 | |
Specimen list | 834 | |
Taxon list | 917 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 1 | |
Matrix downloads | 1 | Supplementary_File_2_morph_matrix_tnt.R2 (1 download); |