Project 157: J. R. Wible, G. W. Rougier, M. J. Novacek, R. J. Asher. 2007. Cretaceous eutherians and Laurasian origin for placental mammals near the K/T boundary. Nature. 447:1003-1006.
Abstract
Estimates of the time of origin for placental mammals from DNA studies span nearly the duration of the Cretaceous period (145 to 65 million years ago), with a maximum of 129 million years ago and a minimum of 78 million years ago. Palaeontologists too are divided on the timing. Some support a deep Cretaceous origin by allying certain middle Cretaceous fossils (97 to 90 million years old) from Uzbekistan with modern placental lineages, whereas others support the origin of crown group Placentalia near the close of the Cretaceous. This controversy has yet to be addressed by a comprehensive phylogenetic analysis that includes all well-known Cretaceous fossils and a wide sample of morphology among Tertiary and recent placentals. Here we report the discovery of a new well-preserved mammal from the Late Cretaceous of Mongolia and a broad-scale phylogenetic analysis. Our results exclude Cretaceous fossils from Placentalia, place the origin of Placentalia near the Cretaceous/Tertiary (K/T) boundary in Laurasia rather than much earlier within the Cretaceous in the Southern Hemisphere and place afrotherians and xenarthrans in a nested rather than a basal position within Placentalia.Read the article »
Project DOI: 10.7934/P157, http://dx.doi.org/10.7934/P157
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 17146 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 408 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 1019 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:408/0 |
Currently Viewing:
MorphoBank Project 157
MorphoBank Project 157
- Creation Date:
22 July 2007 - Publication Date:
22 July 2007 - Project views: 43557
- Media downloads: 1
- Matrix downloads: 33
This research
supported by
Authors' Institutions
- University of Cambridge
- University of Louisville
- American Museum of Natural History
- Carnegie Museum of Natural History
Members
member name | taxa | specimens | media | media notes | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||||||
Michael Novacek Project Administrator | 69 | 0 | 0 | 0 | 408 | 0 | 0 | 0 | 17146 (15846, 0, 1300) | 0 | 0 | 0 | 0 | ||||||
Robert Asher Observer | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | 0 | ||||||
Guillermo Rougier Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | 0 | ||||||
John Wible Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M430' (69 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Nanolestes Last Modified in 12/05/13 | 281 | 113 | 112 | 0 | 15 | 0 | 0 | 4 |
[2] Peramus Last Modified in 12/05/13 | 270 | 127 | 123 | 0 | 15 | 0 | 0 | 4 |
[3] Vincelestes Last Modified in 12/05/13 | 9 | 372 | 371 | 0 | 28 | 0 | 0 | 4 |
[4] Kielantherium Last Modified in 12/05/13 | 324 | 78 | 76 | 0 | 8 | 0 | 0 | 4 |
[5] Deltatheridium Last Modified in 12/05/13 | 133 | 265 | 263 | 0 | 12 | 0 | 0 | 4 |
[6] Mayulestes Last Modified in 12/05/13 | 51 | 341 | 341 | 0 | 16 | 0 | 0 | 4 |
[7] Pucadelphys Last Modified in 12/05/13 | 27 | 366 | 366 | 0 | 15 | 0 | 0 | 4 |
[8] Eomaia Last Modified in 12/05/13 | 221 | 186 | 184 | 0 | 3 | 0 | 0 | 4 |
[9] Prokennalestes Last Modified in 12/05/13 | 217 | 194 | 188 | 0 | 3 | 0 | 0 | 4 |
[10] Murtoilestes Last Modified in 12/05/13 | 346 | 59 | 59 | 0 | 3 | 0 | 0 | 4 |
[11] Bobolestes Last Modified in 12/05/13 | 298 | 110 | 108 | 0 | 2 | 0 | 0 | 4 |
[12] Montanalestes Last Modified in 12/05/13 | 337 | 76 | 70 | 0 | 1 | 0 | 0 | 4 |
[13] Paranyctoides Last Modified in 12/05/13 | 301 | 113 | 107 | 0 | 0 | 0 | 0 | 4 |
[14] Eozhelestes Last Modified in 12/05/13 | 367 | 43 | 41 | 0 | 0 | 0 | 0 | 4 |
[15] Sheikhdzheilia Last Modified in 12/05/13 | 336 | 74 | 71 | 0 | 1 | 0 | 0 | 4 |
[16] Alostera Last Modified in 12/05/13 | 350 | 58 | 58 | 0 | 0 | 0 | 0 | 4 |
[17] Lainodon Last Modified in 12/05/13 | 385 | 23 | 23 | 0 | 0 | 0 | 0 | 4 |
[18] Avitotherium Last Modified in 12/05/13 | 336 | 72 | 70 | 0 | 2 | 0 | 0 | 4 |
[19] Gallolestes Last Modified in 12/05/13 | 365 | 44 | 43 | 0 | 0 | 0 | 0 | 4 |
[20] Parazhelestes Last Modified in 12/05/13 | 252 | 157 | 153 | 0 | 3 | 0 | 0 | 4 |
[21] Aspanlestes Last Modified in 12/05/13 | 257 | 154 | 148 | 0 | 3 | 0 | 0 | 4 |
[22] Zhelestes Last Modified in 12/05/13 | 241 | 171 | 164 | 0 | 3 | 0 | 0 | 4 |
[23] Cimolestes Last Modified in 12/05/13 | 246 | 166 | 157 | 0 | 5 | 0 | 0 | 4 |
[24] Maelestes Last Modified in 12/05/13 | 92 | 322 | 313 | 0 | 3 | 0 | 0 | 4 |
[25] Batodon Last Modified in 12/05/13 | 302 | 105 | 103 | 0 | 3 | 0 | 0 | 4 |
[26] Bulaklestes Last Modified in 12/05/13 | 304 | 101 | 99 | 0 | 5 | 0 | 0 | 4 |
[27] Daulestes Last Modified in 12/05/13 | 307 | 100 | 97 | 0 | 4 | 0 | 0 | 4 |
[28] Uchkudukodon Last Modified in 12/05/13 | 150 | 258 | 248 | 0 | 10 | 0 | 0 | 4 |
[29] Kennalestes Last Modified in 12/05/13 | 100 | 299 | 296 | 0 | 12 | 0 | 0 | 4 |
[30] Asioryctes Last Modified in 12/05/13 | 61 | 336 | 333 | 0 | 14 | 0 | 0 | 4 |
[31] Ukhaatherium Last Modified in 12/05/13 | 47 | 349 | 347 | 0 | 14 | 0 | 0 | 4 |
[32] Deccanolestes Last Modified in 12/05/13 | 292 | 115 | 113 | 0 | 3 | 0 | 0 | 4 |
[33] Kulbeckia Last Modified in 12/05/13 | 204 | 204 | 194 | 0 | 10 | 0 | 0 | 4 |
[34] Zhangolestes Last Modified in 12/05/13 | 357 | 52 | 51 | 0 | 0 | 0 | 0 | 4 |
[35] Alymlestes Last Modified in 12/05/13 | 387 | 21 | 21 | 0 | 0 | 0 | 0 | 4 |
[36] Zalambdalestes Last Modified in 12/05/13 | 39 | 370 | 358 | 0 | 11 | 0 | 0 | 4 |
[37] Barunlestes Last Modified in 12/05/13 | 112 | 283 | 281 | 0 | 15 | 0 | 0 | 4 |
[38] Gypsonictops Last Modified in 12/05/13 | 281 | 135 | 126 | 0 | 1 | 0 | 0 | 4 |
[39] Leptictis Last Modified in 12/05/13 | 11 | 388 | 387 | 0 | 10 | 0 | 0 | 4 |
[40] Purgatorius Last Modified in 12/05/13 | 302 | 106 | 103 | 0 | 3 | 0 | 0 | 4 |
[41] Protungulatum Last Modified in 12/05/13 | 195 | 214 | 206 | 0 | 7 | 0 | 0 | 4 |
[42] Oxyprimus Last Modified in 12/05/13 | 304 | 102 | 100 | 0 | 4 | 0 | 0 | 4 |
[43] Vulpavus Last Modified in 12/05/13 | 78 | 336 | 322 | 0 | 8 | 0 | 0 | 4 |
[44] Miacis Last Modified in 12/05/13 | 124 | 285 | 277 | 0 | 7 | 0 | 0 | 4 |
[45] Diacodexis Last Modified in 12/05/13 | 83 | 319 | 316 | 0 | 9 | 0 | 0 | 4 |
[46] Hyopsodus Last Modified in 12/05/13 | 30 | 377 | 367 | 0 | 11 | 0 | 0 | 4 |
[47] Meniscotherium Last Modified in 12/05/13 | 30 | 375 | 370 | 0 | 8 | 0 | 0 | 4 |
[48] Phenacodus Last Modified in 12/05/13 | 49 | 359 | 349 | 0 | 10 | 0 | 0 | 4 |
[49] Ptilocercus Last Modified in 12/05/13 | 1 | 396 | 394 | 0 | 13 | 0 | 0 | 4 |
[50] Plesiadapis Last Modified in 12/05/13 | 33 | 373 | 356 | 0 | 19 | 0 | 0 | 4 |
[51] Northarctus Last Modified in 12/05/13 | 29 | 372 | 364 | 0 | 15 | 0 | 0 | 4 |
[52] Adapis Last Modified in 12/05/13 | 50 | 352 | 342 | 0 | 16 | 0 | 0 | 4 |
[53] Tribosphenomys Last Modified in 12/05/13 | 231 | 149 | 149 | 0 | 28 | 0 | 0 | 4 |
[54] Paramys Last Modified in 12/05/13 | 24 | 344 | 339 | 0 | 45 | 0 | 0 | 4 |
[55] Rhombomylus Last Modified in 12/05/13 | 18 | 354 | 347 | 0 | 43 | 0 | 0 | 4 |
[56] Gomphos Last Modified in 12/05/13 | 98 | 276 | 274 | 0 | 36 | 0 | 0 | 4 |
[57] Mimotona Last Modified in 12/05/13 | 255 | 126 | 122 | 0 | 31 | 0 | 0 | 4 |
[58] Blarina Last Modified in 12/05/13 | 22 | 366 | 359 | 0 | 27 | 0 | 0 | 4 |
[59] Erinaceus Last Modified in 12/05/13 | 3 | 395 | 385 | 0 | 20 | 0 | 0 | 4 |
[60] Solenodon Last Modified in 12/05/13 | 10 | 375 | 374 | 0 | 24 | 0 | 0 | 4 |
[61] Eoryctes Last Modified in 12/05/13 | 194 | 208 | 203 | 0 | 11 | 0 | 0 | 4 |
[62] Potamogale Last Modified in 12/05/13 | 7 | 376 | 376 | 0 | 25 | 0 | 0 | 4 |
[63] Orycteropus Last Modified in 12/05/13 | 10 | 283 | 276 | 0 | 122 | 0 | 0 | 4 |
[64] Rhynchocyon Last Modified in 12/05/13 | 8 | 370 | 368 | 0 | 32 | 0 | 0 | 4 |
[65] Procavia Last Modified in 12/05/13 | 2 | 384 | 377 | 0 | 29 | 0 | 0 | 4 |
[66] Moeritherium Last Modified in 12/05/13 | 105 | 268 | 266 | 0 | 37 | 0 | 0 | 4 |
[67] Chaetophractus Last Modified in 12/05/13 | 1 | 282 | 282 | 0 | 125 | 0 | 0 | 4 |
[68] Bradypus Last Modified in 12/05/13 | 1 | 277 | 274 | 0 | 133 | 0 | 0 | 4 |
[69] Tamandua Last Modified in 12/05/13 | 14 | 247 | 245 | 0 | 149 | 0 | 0 | 4 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 43557 | |
Project overview | 3549 | |
Specimen list | 3494 | |
Taxon list | 24385 | |
Media views | 6153 | Media search (5225 views); M85690 (928 views); |
Matrix views | 2839 | Matrix landing page (2447 views); Cretaceous eutherians - morphology (392 views); |
Views for media list | 1907 | |
Bibliography | 1223 | |
Documents list | 7 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 425 | |
Media downloads | 1 | M85690 (1 download); |
Matrix downloads | 33 | Cretaceous eutherians - morphology (33 downloads); |
Project downloads | 391 |