Project 4163: M. S. Fernández, L. Campos, E. E. Maxwell, A. C. Garrido. 2021. Catutosaurus gaspariniae , gen. et sp. nov. (Ichthyosauria, Thunnosauria) of the Upper Jurassic of Patagonia and the evolution of the ophthalmosaurids. Journal of Vertebrate Paleontology. 41 (1):null.
Abstract
Thunnosaurian ichthyosaurs were one of the most successful lineages of Mesozoic tetrapods in terms of adaptation to a pelagic lifestyle. Among them, the ophthalmosaurids are of particular interest. Their fossils document an early widespread distribution, including high northern and southern latitudes soon after they appear at the Aalenian–Bajocian boundary, becoming almost the only surviving lineage of ichthyosaurs for approximately 76 million years until their extinction at the end of the Cenomanian (Late Cretaceous). Evolutionary innovations that could have been involved in their remarkable evolutionary success are still poorly understood. Two regions of the skeleton, involved in two vital functions – breathing and swimming – depict notable variation among ophthalmosaurids: the narial region and the proximal forefin configuration (i.e., stylopodium-zeugopodium-mesopodium pattern). Here, we describe Catutosaurus gaspariniae gen. et sp. nov., a new Tithonian (Late Jurassic) ophthalmosaurid from the northwest of Patagonia, Argentina. The new taxon depicts a peculiar pattern of the narial opening and forefin. Catutosaurus has an ‘ophthalmosaurine-like’ skull with reduced cheek, triangular squamosal, slender and delicate snout and rounded tooth roots; and ‘platypterygiine-like’ forefin composed by the typical polygonal and tightly packed elements and a broad articulation between the stylopodium and zeugopodial row. Phylogenetic analysis retrieves Catutosaurus nested within basal ophthalmosaurids, at the base of a large clade named here as Panplatypterygiine. New information provided by Catutosaurus suggests that changes in the narial region and complexity of the stylopodium–zeugopodium articulation occurred independently among ophthalmosaurids and not in a stepwise manner along with the evolution of the clade.Read the article »
Article DOI: 10.1080/02724634.2021.1922427
Project DOI: 10.7934/P4163, http://dx.doi.org/10.7934/P4163
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 1331 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 72 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 153 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:72/0 |
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MorphoBank Project 4163
MorphoBank Project 4163
- Creation Date:
30 December 2021 - Publication Date:
30 December 2021 - Project views: 7715
- Matrix downloads: 1
Authors' Institutions
- Universidad Nacional de la Plata (UNLP)
- Staatliches Museum fur Naturkunde Stuttgart
- Universidad Nacional del Comahue
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 33 | 1 | 1 | 72 | 0 | 0 | 1331 (1331, 0, 0) | 0 | 0 | 0 | ||||
Lisandro Campos Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Marta Fernandez Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M28668' (33 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Temnodontosaurus sp. Last Modified in 12/30/21 | 3 | 69 | 69 | 0 | 0 | 0 | 0 | 3 |
[2] † Malawania anachronus Last Modified in 12/30/21 | 57 | 15 | 15 | 0 | 0 | 0 | 0 | 3 |
[3] † Ichthyosaurus communis Last Modified in 12/30/21 | 0 | 76 | 72 | 0 | 0 | 0 | 0 | 3 |
[4] † Stenopterygius quadriscissus Last Modified in 12/30/21 | 5 | 68 | 67 | 0 | 0 | 0 | 0 | 3 |
[5] † Chacaicosaurus cayi Last Modified in 12/30/21 | 41 | 31 | 31 | 0 | 0 | 0 | 0 | 3 |
[6] † Ophthalmosaurus icenicus Last Modified in 12/30/21 | 0 | 74 | 72 | 0 | 0 | 0 | 0 | 3 |
[7] † Baptanodon natans Last Modified in 12/30/21 | 22 | 51 | 50 | 0 | 0 | 0 | 0 | 3 |
[8] † Brachypterygius extremus Last Modified in 12/30/21 | 31 | 42 | 41 | 0 | 0 | 0 | 0 | 3 |
[9] † Maiaspondylus lindoei Last Modified in 12/30/21 | 46 | 26 | 26 | 0 | 0 | 0 | 0 | 3 |
[10] † Undorosaurus gorodischensis Last Modified in 12/30/21 | 27 | 46 | 45 | 0 | 0 | 0 | 0 | 3 |
[11] † Arthropterygius chrisorum Last Modified in 12/30/21 | 43 | 29 | 29 | 0 | 0 | 0 | 0 | 3 |
[12] † Mollesaurus periallus Last Modified in 12/30/21 | 42 | 30 | 30 | 0 | 0 | 0 | 0 | 3 |
[13] † Acamptonectes densus Last Modified in 12/30/21 | 34 | 39 | 38 | 0 | 0 | 0 | 0 | 3 |
[14] † Caypullisaurus bonapartei Last Modified in 12/30/21 | 29 | 43 | 43 | 0 | 0 | 0 | 0 | 3 |
[15] † Aegirosaurus leptospondylus Last Modified in 12/30/21 | 32 | 40 | 40 | 0 | 0 | 0 | 0 | 3 |
[16] † Platypterygius australis Last Modified in 12/30/21 | 1 | 72 | 71 | 0 | 0 | 0 | 0 | 3 |
[17] † Platypterygius hercynicus Last Modified in 12/30/21 | 25 | 47 | 47 | 0 | 0 | 0 | 0 | 3 |
[18] † Platypterygius sachicarum Last Modified in 12/30/21 | 33 | 39 | 39 | 0 | 0 | 0 | 0 | 3 |
[19] † Platypterygius americanus Last Modified in 12/30/21 | 36 | 36 | 36 | 0 | 0 | 0 | 0 | 3 |
[20] † Athabascasaurus bitumineus Last Modified in 12/30/21 | 45 | 27 | 27 | 0 | 0 | 0 | 0 | 3 |
[21] † Leninia stellans Last Modified in 12/30/21 | 56 | 17 | 16 | 0 | 0 | 0 | 0 | 3 |
[22] † Sveltonectes insolitus Last Modified in 12/30/21 | 13 | 61 | 59 | 0 | 0 | 0 | 0 | 3 |
[23] † Cryopterygius kristiansenae Last Modified in 12/30/21 | 23 | 49 | 49 | 0 | 0 | 0 | 0 | 3 |
[24] † Janusaurus lundi Last Modified in 12/30/21 | 27 | 46 | 45 | 0 | 0 | 0 | 0 | 3 |
[25] † Gengasaurus nicosiai Last Modified in 12/30/21 | 49 | 23 | 23 | 0 | 0 | 0 | 0 | 3 |
[26] † Muiscasaurus catheti Last Modified in 12/30/21 | 58 | 14 | 14 | 0 | 0 | 0 | 0 | 3 |
[27] † Simbirkiasaurus birjukovi Last Modified in 12/30/21 | 59 | 13 | 13 | 0 | 0 | 0 | 0 | 3 |
[28] † Keilhauianui222.667 Last Modified in 12/30/21 | 37 | 35 | 35 | 0 | 0 | 0 | 0 | 3 |
[29] † Palvennia hoybergeti Last Modified in 12/30/21 | 18 | 54 | 54 | 0 | 0 | 0 | 0 | 3 |
[30] † Arthropterygius thalassonotus Last Modified in 12/30/21 | 45 | 27 | 27 | 0 | 0 | 0 | 0 | 3 |
[31] † MOZ 5788 Last Modified in 12/30/21 | 34 | 40 | 38 | 0 | 0 | 0 | 0 | 3 |
[32] † Catutosaurus gaspariniae Last Modified in 12/30/21 | 38 | 34 | 34 | 0 | 0 | 0 | 0 | 3 |
[33] † Keilhauia nui Last Modified in 12/30/21 | 54 | 18 | 18 | 0 | 0 | 0 | 0 | 3 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 7715 | |
Project overview | 527 | |
Matrix views | 414 | Matrix landing page (384 views); Data matrix from supplemental data with missing character state labels added (30 views); |
Media views | 1540 | Media search (1305 views); M834955 (235 views); |
Documents list | 391 | |
Bibliography | 307 | |
Views for media list | 437 | |
Specimen list | 757 | |
Taxon list | 3342 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 20 | |
Project downloads | 19 | |
Matrix downloads | 1 | Data matrix from supplemental data with missing character state labels added (1 download); |