Project 5297: C. A. Brochu. 2020. Pliocene crocodiles from Kanapoi, Turkana Basin, Kenya. Journal of Human Evolution. 140:102410.
Abstract
Three crocodylid species are known from the Pliocene Kanapoi locality in the western Turkana Basin. One of these, Crocodylus thorbjarnarsoni, includes material previously referred to Crocodylus niloticus (the modern Nile crocodile currently living in Lake Turkana) and Rimasuchus lloydi. C. thorbjarnarsoni was a gigantic horned crocodile similar in overall shape to most other generalized crocodylids, but its closest known relative is another extinct species, Crocodylus anthropophagus from the Pleistocene of Olduvai Gorge in Tanzania. It is not closely related to C. niloticus. The second is an extinct form of sharp-nosed crocodile (Mecistops), a group of slender-snouted crocodylids currently restricted to western and central Africa. The third is Euthecodon, a crocodylid with an extremely long, slender, and distinctively notched snout. Euthecodon and C. thorbjarnarsoni are known from substantial numbers of specimens, but only one Mecistops specimen has been identified from the locality. The crocodylian fauna at Kanapoi is taxonomically similar to that of most other Plio-Pleistocene fluviolacustrine deposits in the Turkana Basin. Crocodylian diversity in the Turkana region contracted from a peak of five co-existing species in the late Miocene to one today; this contraction was underway by the early Pliocene, but crocodylian diversity remained stable at three species until well into the Quaternary.Read the article »
Article DOI: 10.1016/j.jhevol.2017.10.003
Project DOI: 10.7934/P5297, http://dx.doi.org/10.7934/P5297
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 6929 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 189 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 439 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:189/0 |
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MorphoBank Project 5297
MorphoBank Project 5297
- Creation Date:
19 June 2024 - Publication Date:
02 July 2024 - Matrix downloads: 1
This research
supported by
Authors' Institutions
- University of Iowa
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Shreya Jariwala Project Administrator | 53 | 5 | 5 | 189 | 0 | 0 | 6929 (6929, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29878' (53 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Borealosuchus sternbergii Taxon name last Modified on 06/19/24 | 22 | 167 | 167 | 0 | 0 | 0 | 0 | 1 |
[2] † Leidyosuchus canadensis Taxon name last Modified on 06/19/24 | 40 | 149 | 149 | 0 | 0 | 0 | 0 | 1 |
[3] Mecistops cataphractus Taxon name last Modified on 06/19/24 | 4 | 185 | 185 | 0 | 0 | 0 | 0 | 1 |
[4] Crocodylus niloticus Taxon name last Modified on 06/19/24 | 1 | 190 | 188 | 0 | 0 | 0 | 0 | 1 |
[5] Crocodylus porosus Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[6] Crocodylus rhombifer Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[7] Crocodylus acutus Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[8] Crocodylus palustris Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[9] Crocodylus siamensis Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[10] Crocodylus intermedius Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[11] Crocodylus johnstoni Taxon name last Modified on 06/19/24 | 2 | 188 | 187 | 0 | 0 | 0 | 0 | 1 |
[12] Crocodylus mindorensis Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[13] Crocodylus novaeguineae Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[14] † Crocodylus raninus Taxon name last Modified on 06/19/24 | 83 | 106 | 106 | 0 | 0 | 0 | 0 | 1 |
[15] Crocodylus moreletii Taxon name last Modified on 06/19/24 | 1 | 189 | 188 | 0 | 0 | 0 | 0 | 1 |
[16] † Crocodylus palaeindicus Taxon name last Modified on 06/19/24 | 61 | 128 | 128 | 0 | 0 | 0 | 0 | 1 |
[17] † Crocodylus checchiai Taxon name last Modified on 06/19/24 | 75 | 114 | 114 | 0 | 0 | 0 | 0 | 1 |
[18] † Crocodylus anthropophagus Taxon name last Modified on 06/19/24 | 68 | 121 | 121 | 0 | 0 | 0 | 0 | 1 |
[19] † Crocodylus thorbjarnarsoni Taxon name last Modified on 06/19/24 | 70 | 119 | 119 | 0 | 0 | 0 | 0 | 1 |
[20] † Euthecodon brumpti Taxon name last Modified on 06/19/24 | 71 | 118 | 118 | 0 | 0 | 0 | 0 | 1 |
[21] † Euthecodon arambourgii Taxon name last Modified on 06/19/24 | 104 | 85 | 85 | 0 | 0 | 0 | 0 | 1 |
[22] Osteolaemus tetraspis Taxon name last Modified on 06/19/24 | 4 | 185 | 185 | 0 | 0 | 0 | 0 | 1 |
[23] Osteolaemus osborni Taxon name last Modified on 06/19/24 | 4 | 185 | 185 | 0 | 0 | 0 | 0 | 1 |
[24] † Voay robustus Taxon name last Modified on 06/19/24 | 45 | 144 | 144 | 0 | 0 | 0 | 0 | 1 |
[25] † Rimasuchus lloydi Taxon name last Modified on 06/19/24 | 101 | 88 | 88 | 0 | 0 | 0 | 0 | 1 |
[26] † Crocodylus pigotti Taxon name last Modified on 06/19/24 | 74 | 115 | 115 | 0 | 0 | 0 | 0 | 1 |
[27] † Crocodylus gariepensis Taxon name last Modified on 06/19/24 | 90 | 99 | 99 | 0 | 0 | 0 | 0 | 1 |
[28] † Crocodylus megarhinus Taxon name last Modified on 06/19/24 | 71 | 118 | 118 | 0 | 0 | 0 | 0 | 1 |
[29] † Australosuchus clarkae Taxon name last Modified on 06/19/24 | 69 | 120 | 120 | 0 | 0 | 0 | 0 | 1 |
[30] † Kambara implexidens Taxon name last Modified on 06/19/24 | 51 | 138 | 138 | 0 | 0 | 0 | 0 | 1 |
[31] † Trilophosuchus rackhami Taxon name last Modified on 06/19/24 | 120 | 69 | 69 | 0 | 0 | 0 | 0 | 1 |
[32] † Quinkana spp Taxon name last Modified on 06/19/24 | 111 | 81 | 78 | 0 | 0 | 0 | 0 | 1 |
[33] † Tomistoma schlegelii Taxon name last Modified on 06/19/24 | 2 | 187 | 187 | 0 | 0 | 0 | 0 | 1 |
[34] † Tomistoma lusitanica Taxon name last Modified on 06/19/24 | 71 | 118 | 118 | 0 | 0 | 0 | 0 | 1 |
[35] † Tomistoma petrolica Taxon name last Modified on 06/19/24 | 124 | 65 | 65 | 0 | 0 | 0 | 0 | 1 |
[36] † Toyotamaphimaea machikanensis Taxon name last Modified on 06/19/24 | 54 | 135 | 135 | 0 | 0 | 0 | 0 | 1 |
[37] † Penghusuchus pani Taxon name last Modified on 06/19/24 | 68 | 121 | 121 | 0 | 0 | 0 | 0 | 1 |
[38] † Gavialosuchus eggenbergensis Taxon name last Modified on 06/19/24 | 113 | 76 | 76 | 0 | 0 | 0 | 0 | 1 |
[39] † Paratomistoma courtii Taxon name last Modified on 06/19/24 | 132 | 57 | 57 | 0 | 0 | 0 | 0 | 1 |
[40] † Megadontosuchus arduini Taxon name last Modified on 06/19/24 | 128 | 61 | 61 | 0 | 0 | 0 | 0 | 1 |
[41] † Tomistoma cairense Taxon name last Modified on 06/19/24 | 103 | 86 | 86 | 0 | 0 | 0 | 0 | 1 |
[42] † Thecachampsa antiqua Taxon name last Modified on 06/19/24 | 47 | 142 | 142 | 0 | 0 | 0 | 0 | 1 |
[43] † Thecachampsa americana Taxon name last Modified on 06/19/24 | 67 | 122 | 122 | 0 | 0 | 0 | 0 | 1 |
[44] † Thecachampsa carolinensis Taxon name last Modified on 06/19/24 | 76 | 113 | 113 | 0 | 0 | 0 | 0 | 1 |
[45] † Dollosuchoides densmorei Taxon name last Modified on 06/19/24 | 72 | 117 | 117 | 0 | 0 | 0 | 0 | 1 |
[46] † Kentisuchus spenceri Taxon name last Modified on 06/19/24 | 99 | 90 | 90 | 0 | 0 | 0 | 0 | 1 |
[47] † Brachyuranochampsa eversolei Taxon name last Modified on 06/19/24 | 110 | 79 | 79 | 0 | 0 | 0 | 0 | 1 |
[48] † Crocodylus acer Taxon name last Modified on 06/19/24 | 99 | 90 | 90 | 0 | 0 | 0 | 0 | 1 |
[49] † Asiatosuchus grangeri Taxon name last Modified on 06/19/24 | 161 | 28 | 28 | 0 | 0 | 0 | 0 | 1 |
[50] † Crocodylus depressifrons Taxon name last Modified on 06/19/24 | 37 | 152 | 152 | 0 | 0 | 0 | 0 | 1 |
[51] † Crocodylus affinis Taxon name last Modified on 06/19/24 | 27 | 162 | 162 | 0 | 0 | 0 | 0 | 1 |
[52] † Asiatosuchus germanicus Taxon name last Modified on 06/19/24 | 57 | 132 | 132 | 0 | 0 | 0 | 0 | 1 |
[53] † Prodiplocynodon langi Taxon name last Modified on 06/19/24 | 106 | 83 | 83 | 0 | 0 | 0 | 0 | 1 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 2 | |
Matrix downloads | 1 | Brochu 2020 (1 download); |
Project downloads | 1 |