Project 3561: J. Luque, S. Gerken. 2019. Exceptional preservation of comma shrimp from a mid-Cretaceous Lagerstätte of Colombia, and the origins of crown Cumacea. Proceedings of the Royal Society B: Biological Sciences. 286 (1916):20191863.

Specimen: † Eobodotria muisca Luque & Gerken, 2019 (:IGM p880695)
View: Eobodotria muisca, right side view
View: Eobodotria muisca, right side view
Abstract
Mesozoic rocks with exceptional preservation of marine arthropods are known worldwide but largely restricted to mid–high latitudes. The scarcity of assemblages with exceptional preservation in low, tropical latitudes greatly limits our understanding of the origins of several modern groups and the evolution of tropical biotas through time. Here, we report the oldest crown Cumacea, or ‘comma’ shrimp (Arthropoda: Eumalacostraca: Peracarida) with modern familial affinities, from a new mid-Cretaceous (95–90 Ma) Lagerstätte in tropical South America. Cumaceans have one of the poorest fossil records among marine arthropods, despite today being abundant and speciose benthic organisms associated with fine-grained sediments with high fossilization potential. Eobodotria muisca gen. et sp. nov., found in mass accumulation surfaces, preserves with detail the gut, mouth parts, thoracic legs/pereopods, pleopods, uropods bearing setae, antennal flagella and even small eyes bearing ommatidia. These features, rarely preserved in fossil crustaceans, plus the large sample size (greater than 200 individuals, 6–8 mm long), allow us to discuss phylogenetic/systematic aspects and explore possible mechanisms behind their unusual accumulation. Eobodotria bridges an approximately 165 Myr gap in the cumacean fossil record, provides a reliable calibration point for phylogenetic studies and expands our understanding of exceptional preservation in past and present tropical settings.Read the article »
Article DOI: 10.1098/rspb.2019.1863
Project DOI: 10.7934/P3561, http://dx.doi.org/10.7934/P3561
This project contains | Matrices |
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Download Project SDD File ![]() | Total scored cells: 4804 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 110 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 302 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:110/0 |
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MorphoBank Project 3561
MorphoBank Project 3561
- Creation Date:
22 October 2019 - Publication Date:
15 December 2019 - Project views: 12445
- Matrix downloads: 8
Authors' Institutions
- University of Alaska
- University of Alberta
- Yale University
Members
member name | taxa ![]() |
specimens ![]() |
media ![]() | chars ![]() | character
| cell scorings (scored, NPA, "-") | cell
| rules ![]() | ||||||
Javier Luque Project Administrator | 37 | 1 | 1 | 110 | 0 | 0 | 4804 (4677, 0, 127) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M26305' (36 Taxa)
taxon | unscored cells |
scored cells ![]() |
no cell support ![]() |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Cimmerius Last Modified in 10/22/19 | 2 | 101 | 98 | 0 | 10 | 0 | 0 | 1 ![]() |
[2] Diastylis Last Modified in 10/22/19 | 4 | 101 | 98 | 0 | 8 | 0 | 0 | 1 ![]() |
[3] Hemilamprops Last Modified in 10/22/19 | 17 | 93 | 93 | 0 | 0 | 0 | 0 | 1 ![]() |
[4] Eobodotria Last Modified in 10/22/19 | 56 | 54 | 54 | 0 | 0 | 0 | 0 | 1 ![]() |
[5] Alticuma Last Modified in 10/22/19 | 3 | 132 | 104 | 0 | 3 | 0 | 0 | 1 ![]() |
[6] Bacescuma Last Modified in 10/22/19 | 2 | 107 | 103 | 0 | 5 | 0 | 0 | 1 ![]() |
[7] Bodotria Last Modified in 10/22/19 | 0 | 182 | 110 | 0 | 0 | 0 | 0 | 1 ![]() |
[8] Coricuma Last Modified in 10/22/19 | 7 | 101 | 100 | 0 | 3 | 0 | 0 | 1 ![]() |
[9] Cyclaspis Last Modified in 10/22/19 | 0 | 200 | 108 | 0 | 2 | 0 | 0 | 1 ![]() |
[10] Cyclaspoides Last Modified in 10/22/19 | 2 | 134 | 100 | 0 | 8 | 0 | 0 | 1 ![]() |
[11] Eocuma Last Modified in 10/22/19 | 0 | 183 | 108 | 0 | 2 | 0 | 0 | 1 ![]() |
[12] Iphinoe Last Modified in 10/22/19 | 1 | 188 | 109 | 0 | 0 | 0 | 0 | 1 ![]() |
[13] Austrocuma Last Modified in 10/22/19 | 0 | 141 | 107 | 0 | 3 | 0 | 0 | 1 ![]() |
[14] Mossambicuma Last Modified in 10/22/19 | 3 | 121 | 102 | 0 | 5 | 0 | 0 | 1 ![]() |
[15] Upselaspis Last Modified in 10/22/19 | 4 | 112 | 102 | 0 | 4 | 0 | 0 | 1 ![]() |
[16] Zygosiphon Last Modified in 10/22/19 | 1 | 112 | 105 | 0 | 4 | 0 | 0 | 1 ![]() |
[17] Apocuma Last Modified in 10/22/19 | 1 | 124 | 104 | 0 | 5 | 0 | 0 | 1 ![]() |
[18] Cumopsis Last Modified in 10/22/19 | 2 | 148 | 105 | 0 | 3 | 0 | 0 | 1 ![]() |
[19] Heterocuma Last Modified in 10/22/19 | 2 | 137 | 100 | 0 | 8 | 0 | 0 | 1 ![]() |
[20] Hypocuma Last Modified in 10/22/19 | 3 | 119 | 104 | 0 | 3 | 0 | 0 | 1 ![]() |
[21] Leptocuma Last Modified in 10/22/19 | 2 | 160 | 106 | 0 | 2 | 0 | 0 | 1 ![]() |
[22] Mancocuma Last Modified in 10/22/19 | 1 | 128 | 106 | 0 | 3 | 0 | 0 | 1 ![]() |
[23] Spilocuma Last Modified in 10/22/19 | 5 | 111 | 101 | 0 | 4 | 0 | 0 | 1 ![]() |
[24] Pseudoleptocuma Last Modified in 10/22/19 | 4 | 113 | 102 | 0 | 4 | 0 | 0 | 1 ![]() |
[25] Pseudosympodomma Last Modified in 10/22/19 | 2 | 138 | 104 | 0 | 4 | 0 | 0 | 1 ![]() |
[26] Gephyrocuma Last Modified in 10/22/19 | 4 | 114 | 104 | 0 | 2 | 0 | 0 | 1 ![]() |
[27] Zenocuma Last Modified in 10/22/19 | 10 | 91 | 91 | 0 | 9 | 0 | 0 | 1 ![]() |
[28] Pomacuma Last Modified in 10/22/19 | 3 | 119 | 105 | 0 | 2 | 0 | 0 | 1 ![]() |
[29] Gigacuma Last Modified in 10/22/19 | 0 | 119 | 107 | 0 | 3 | 0 | 0 | 1 ![]() |
[30] Sympodomma Last Modified in 10/22/19 | 2 | 158 | 108 | 0 | 0 | 0 | 0 | 1 ![]() |
[31] Speleocuma Last Modified in 10/22/19 | 5 | 106 | 101 | 0 | 4 | 0 | 0 | 1 ![]() |
[32] Gaussicuma Last Modified in 10/22/19 | 2 | 145 | 106 | 0 | 2 | 0 | 0 | 1 ![]() |
[33] Glyphocuma Last Modified in 10/22/19 | 4 | 140 | 102 | 0 | 4 | 0 | 0 | 1 ![]() |
[34] Bathycuma Last Modified in 10/22/19 | 2 | 157 | 107 | 0 | 1 | 0 | 0 | 1 ![]() |
[35] Vaunthompsonia Last Modified in 10/22/19 | 0 | 168 | 110 | 0 | 0 | 0 | 0 | 1 ![]() |
[36] Picrocuma Last Modified in 10/22/19 | 0 | 120 | 103 | 0 | 7 | 0 | 0 | 1 ![]() |
Project views 
type | number of views | Individual items viewed (where applicable) |
Total project views | 12445 | |
Project overview | 1051 | |
Matrix views | 699 | Exceptional preservation of comma shrimp from a mid-Cretaceous Lagerstätte of Colombia, and the origins of crown Cumacea (108 views); Matrix landing page (591 views); |
Media views | 2363 | Media search (1963 views); M682996 (400 views); |
Bibliography | 1188 | |
Views for media list | 687 | |
Specimen list | 1164 | |
Taxon list | 5288 | |
Documents list | 5 |
Project downloads 
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 133 | |
Project downloads | 125 | |
Matrix downloads | 8 | Exceptional preservation of comma shrimp from a mid-Cretaceous Lagerstätte of Colombia, and the origins of crown Cumacea (8 downloads); |