Project 2551: P. Jimenez-Huidobro, M. W. Caldwell. 2016. Reassessment and reassignment of the early Maastrichtian mosasaur Hainosaurus bernardi Dollo, 1885, to Tylosaurus Marsh, 1872. Journal of Vertebrate Paleontology. 36 (3):e1096275.
Abstract
Redescription of Hainosaurus bernardi Dollo, 1885a, from the early Maastrichtian of the Ciply Phosphatic Chalk of Belgium, results in a reassignment of the taxon to the genus Tylosaurus Marsh, 1872, because the genus Hainosaurus cannot be diagnosed independent of Tylosaurus. The diagnosis of Hainosaurus bernardi by Dollo, 1885a, is reviewed, and the two incomplete and poorly preserved specimens assigned to the taxon are compared with recognized species of Tylosaurus. Hainosaurus was originally diagnosed from characters of the jugal, quadrate, maxilla, premaxilla, frontal, parietal, and teeth. Here, we show that most of the characters of these elements are shared with the genus Tylosaurus, and that those that are not shared, but that are purported key diagnostic characters for Hainosaurus, are simply not preserved, or are too poorly preserved to support a differential diagnosis of H. bernardi at the generic level. The available data support the conclusion that Hainosaurus is a junior synonym of Tylosaurus because no anatomical features distinguish the former from the latter. The genus Tylosaurus occupied a wider geographic and temporal distribution than has been previously suggested, inhabiting the North Atlantic Circle Basin from the Turonian to the Maastrichtian. There are species-level features that support T. bernardi as distinct from other described species of Tylosaurus.Read the article »
Article DOI: 10.1080/02724634.2016.1096275
Project DOI: 10.7934/P2551, http://dx.doi.org/10.7934/P2551
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 3545 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 131 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 299 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:131/0 |
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MorphoBank Project 2551
MorphoBank Project 2551
- Creation Date:
03 November 2016 - Publication Date:
15 June 2022 - Project views: 6598
- Media downloads: 1
- Matrix downloads: 1
Authors' Institutions
- University of Alberta
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 42 | 2 | 2 | 131 | 0 | 0 | 3545 (3502, 0, 43) | 0 | 0 | 0 | ||||
Paulina Jimenez Huidobro Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M24325' (42 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Outgroup Last Modified in 11/03/16 | 0 | 119 | 119 | 0 | 12 | 0 | 0 | 2 |
[2] † Aigialosaurus Last Modified in 06/15/22 | 42 | 86 | 86 | 0 | 3 | 0 | 0 | 2 |
[3] † Komensaurus carrolli Last Modified in 06/15/22 | 97 | 34 | 34 | 0 | 0 | 0 | 0 | 2 |
[4] † Halisaurus platyspondylus Last Modified in 06/15/22 | 66 | 65 | 65 | 0 | 0 | 0 | 0 | 2 |
[5] † Halisaurus sternbergi Last Modified in 06/15/22 | 26 | 104 | 104 | 0 | 1 | 0 | 0 | 2 |
[6] † Dallasaurus turneri Last Modified in 06/15/22 | 87 | 43 | 43 | 0 | 1 | 0 | 0 | 2 |
[7] † Clidastes liodontus Last Modified in 06/15/22 | 11 | 121 | 120 | 0 | 0 | 0 | 0 | 2 |
[8] † Clidastes moorevillensis Last Modified in 06/15/22 | 10 | 121 | 121 | 0 | 0 | 0 | 0 | 2 |
[9] † Clidastes propython Last Modified in 06/15/22 | 30 | 101 | 101 | 0 | 0 | 0 | 0 | 2 |
[10] † Prognathodon overtoni Last Modified in 06/15/22 | 18 | 112 | 112 | 0 | 1 | 0 | 0 | 2 |
[11] † Prognathodon rapax Last Modified in 06/15/22 | 27 | 103 | 103 | 0 | 1 | 0 | 0 | 2 |
[12] † Prognathodon solvayi Last Modified in 06/15/22 | 45 | 84 | 84 | 0 | 2 | 0 | 0 | 2 |
[13] † Prognathodon currii Last Modified in 06/15/22 | 96 | 34 | 34 | 0 | 1 | 0 | 0 | 2 |
[14] † Prognathodon waiparaensis Last Modified in 06/15/22 | 98 | 33 | 33 | 0 | 0 | 0 | 0 | 2 |
[15] † Prognathodon saturator Last Modified in 06/15/22 | 58 | 73 | 73 | 0 | 0 | 0 | 0 | 2 |
[16] † Globidens alabamaensis Last Modified in 06/15/22 | 69 | 62 | 62 | 0 | 0 | 0 | 0 | 2 |
[17] † Globidens dakotensis Last Modified in 06/15/22 | 65 | 67 | 66 | 0 | 0 | 0 | 0 | 2 |
[18] † Mosasaurus conodon Last Modified in 06/15/22 | 84 | 47 | 47 | 0 | 0 | 0 | 0 | 2 |
[19] † Mosasaurus maximus Last Modified in 06/15/22 | 14 | 117 | 117 | 0 | 0 | 0 | 0 | 2 |
[20] † Mosasaurus missouriensis Last Modified in 06/15/22 | 38 | 94 | 93 | 0 | 0 | 0 | 0 | 2 |
[21] † Plesiotylosaurus crassidens Last Modified in 06/15/22 | 37 | 94 | 94 | 0 | 0 | 0 | 0 | 2 |
[22] † Plotosaurus bennisoni Last Modified in 06/15/22 | 28 | 103 | 103 | 0 | 0 | 0 | 0 | 2 |
[23] † Tylosaurus nepaeolicus Last Modified in 06/15/22 | 28 | 103 | 103 | 0 | 0 | 0 | 0 | 2 |
[24] † Tylosaurus bernardi Last Modified in 06/15/22 | 22 | 109 | 109 | 0 | 0 | 0 | 0 | 2 |
[25] † Tylosaurus kansasensis Last Modified in 06/15/22 | 38 | 93 | 93 | 0 | 0 | 0 | 0 | 2 |
[26] † Taniwhasaurus oweni Last Modified in 06/15/22 | 73 | 58 | 58 | 0 | 0 | 0 | 0 | 2 |
[27] † Taniwhasaurus antarcticus Last Modified in 06/15/22 | 71 | 60 | 60 | 0 | 0 | 0 | 0 | 2 |
[28] † Tylosaurus proriger Last Modified in 06/15/22 | 7 | 124 | 124 | 0 | 0 | 0 | 0 | 2 |
[29] † Yaguarasaurus columbianus Last Modified in 06/15/22 | 72 | 58 | 58 | 0 | 1 | 0 | 0 | 2 |
[30] † Eremiasaurus heterodontus Last Modified in 06/15/22 | 47 | 84 | 84 | 0 | 0 | 0 | 0 | 2 |
[31] † Prognathodon kianda Last Modified in 06/15/22 | 72 | 59 | 59 | 0 | 0 | 0 | 0 | 2 |
[32] † Russellosaurus coheni Last Modified in 06/15/22 | 55 | 75 | 75 | 0 | 1 | 0 | 0 | 2 |
[33] † Romeosaurus fumanensis Last Modified in 06/15/22 | 75 | 55 | 55 | 0 | 1 | 0 | 0 | 2 |
[34] † Ectenosaurus clidastoides Last Modified in 06/15/22 | 23 | 108 | 108 | 0 | 0 | 0 | 0 | 2 |
[35] † Plioplatecarpus Last Modified in 06/15/22 | 29 | 101 | 100 | 0 | 2 | 0 | 0 | 2 |
[36] † Platecarpus planifrons Last Modified in 06/15/22 | 25 | 106 | 105 | 0 | 1 | 0 | 0 | 2 |
[37] † Platecarpus tympaniticus Last Modified in 06/15/22 | 5 | 124 | 123 | 0 | 3 | 0 | 0 | 2 |
[38] † Latoplatecarpus willistoni Last Modified in 06/15/22 | 40 | 89 | 88 | 0 | 3 | 0 | 0 | 2 |
[39] † Selmasaurus johnsoni Last Modified in 06/15/22 | 46 | 83 | 83 | 0 | 2 | 0 | 0 | 2 |
[40] † Angolasaurus bocagei Last Modified in 06/15/22 | 73 | 57 | 57 | 0 | 1 | 0 | 0 | 2 |
[41] † Tethysaurus nopcsai Last Modified in 06/15/22 | 42 | 86 | 85 | 0 | 4 | 0 | 0 | 2 |
[42] † Pannoniasaurus osii Last Modified in 06/15/22 | 76 | 53 | 53 | 0 | 2 | 0 | 0 | 2 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 6598 | |
Media views | 1352 | Media search (962 views); M844917 (215 views); M844918 (175 views); |
Project overview | 509 | |
Matrix views | 278 | Matrix landing page (251 views); Character matrix (27 views); |
Taxon list | 2863 | |
Bibliography | 252 | |
Specimen list | 976 | |
Views for media list | 364 | |
Documents list | 4 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 3 | |
Media downloads | 1 | M844918 (1 download); |
Project downloads | 1 | |
Matrix downloads | 1 | Character matrix (1 download); |