Project 3939: A. Benites-Palomino, J. VĂ©lez-Juarbe, R. Salas-Gismondi, M. Urbina. 2019. Scaphokogia totajpe, sp. nov., a new bulky-faced pygmy sperm whale (Kogiidae) from the late Miocene of Peru. Journal of Vertebrate Paleontology. 39 (6):e1728538.
Abstract
The modern pygmy and dwarf sperm whales (Physeteroidea, Kogiidae) are remnants of a highly diverse group, which flourished in the Miocene oceans. Unlike their modern suction-feeding, deep-diving relatives, the past diversity of this family includes animals with disparate ecological habits. Here, we describe Scaphokogia totajpe, sp. nov., a new species of kogiid based on a well-preserved skull from the upper Miocene strata of the Pisco Formation, Peru. A phylogenetic analysis places S. totajpe as sister taxon of S. cochlearis and divides Kogiidae into two clades: the first including both species of Scaphokogia and the second including Kogia, Koristocetus, Praekogia, and Nanokogia. Similar to S. cochlearis, S. totajpe has a tubular rostrum with a hypertrophied mesorostral canal, a large supracranial basin, and a leftward deviated facial sagittal crest, but it differs by possessing a proportionately shorter rostrum, a reduced projection of the lacrimojugal between the frontal and the maxilla, and a flat occipital shield. The cranial morphology of Scaphokogia indicates that the extent of the nasal complex was greater than in modern kogiids. Furthermore, the overall rostrum shape and the reconstructed muscle insertion sites indicate that Scaphokogia retained some plesiomorphic features related to a more generalist ecology. Inclusion of S. totajpe into the context of the Pisco Formation indicates that during the late Miocene, the Peruvian coastal system was a hot spot for the diversification of physeteroids, with at least four species coexisting. Finally, Scaphokogia totajpe highlights a late Miocene diversity peak for sperm whales in the global oceans, before the Pliocene odontocete turnover.Read the article »
Article DOI: 10.1080/02724634.2019.1728538
Project DOI: 10.7934/P3939, http://dx.doi.org/10.7934/P3939
This project contains | Matrices |
---|---|
Download Project SDD File | Total scored cells: 1179 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 57 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 145 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:57/0 |
Currently Viewing:
MorphoBank Project 3939
MorphoBank Project 3939
- Creation Date:
22 February 2021 - Publication Date:
22 February 2021 - Project views: 10628
- Matrix downloads: 3
Authors' Institutions
- National Museum of Natural History, Smithsonian Institution
- Universidad Nacional Mayor de San Marcos
- Universidad Peruana Cayetano Heredia
- American Museum of Natural History
- Natural History Museum of Los Angeles County
- Smithsonian Tropical Research Institute
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 32 | 1 | 1 | 57 | 0 | 0 | 1179 (1179, 0, 0) | 0 | 0 | 0 | ||||
Rodolfo Salas-Gismondi Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Mario Urbina Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M27255' (32 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Zygorhiza kochii Last Modified in 02/22/21 | 11 | 46 | 46 | 0 | 0 | 0 | 0 | 3 |
[2] † Cynthiacetus peruvianus Last Modified in 02/22/21 | 11 | 46 | 46 | 0 | 0 | 0 | 0 | 3 |
[3] † Agorophius pygmaeus Last Modified in 02/22/21 | 22 | 35 | 35 | 0 | 0 | 0 | 0 | 3 |
[4] † Eudelphis mortezelensis Last Modified in 02/22/21 | 34 | 23 | 23 | 0 | 0 | 0 | 0 | 3 |
[5] † Zygophyseter varolai Last Modified in 02/22/21 | 7 | 50 | 50 | 0 | 0 | 0 | 0 | 3 |
[6] † Brygmophyseter shigensis Last Modified in 02/22/21 | 29 | 28 | 28 | 0 | 0 | 0 | 0 | 3 |
[7] † Acrophyseter deinodon Last Modified in 02/22/21 | 11 | 46 | 46 | 0 | 0 | 0 | 0 | 3 |
[8] † Acrophyseter robustus Last Modified in 02/22/21 | 14 | 43 | 43 | 0 | 0 | 0 | 0 | 3 |
[9] † Acrophyseter spp. Last Modified in 02/22/21 | 28 | 29 | 29 | 0 | 0 | 0 | 0 | 3 |
[10] † Livyatan melvillei Last Modified in 02/22/21 | 21 | 36 | 36 | 0 | 0 | 0 | 0 | 3 |
[11] † "Aulo" (patagophyseter) rionegrensis Last Modified in 02/22/21 | 17 | 40 | 40 | 0 | 0 | 0 | 0 | 3 |
[12] † Orycterocetus crocodilinus Last Modified in 02/22/21 | 8 | 49 | 49 | 0 | 0 | 0 | 0 | 3 |
[13] † Physeterula dubusi Last Modified in 02/22/21 | 24 | 33 | 33 | 0 | 0 | 0 | 0 | 3 |
[14] † Idiorophus patagonicus Last Modified in 02/22/21 | 37 | 20 | 20 | 0 | 0 | 0 | 0 | 3 |
[15] † Diaphorocetus poucheti Last Modified in 02/22/21 | 25 | 32 | 32 | 0 | 0 | 0 | 0 | 3 |
[16] † Placoziphius duboisi Last Modified in 02/22/21 | 29 | 28 | 28 | 0 | 0 | 0 | 0 | 3 |
[17] † Aulophyseter morricei Last Modified in 02/22/21 | 6 | 51 | 51 | 0 | 0 | 0 | 0 | 3 |
[18] Physeter macrocephalus Last Modified in 02/22/21 | 1 | 56 | 56 | 0 | 0 | 0 | 0 | 3 |
[19] † Idiophyseter merriami Last Modified in 02/22/21 | 41 | 16 | 16 | 0 | 0 | 0 | 0 | 3 |
[20] † Thalassocetus antwerpiensis Last Modified in 02/22/21 | 38 | 19 | 19 | 0 | 0 | 0 | 0 | 3 |
[21] † Aprixokogia kelloggi Last Modified in 02/22/21 | 19 | 38 | 38 | 0 | 0 | 0 | 0 | 3 |
[22] † Scaphokogia cochlearis Last Modified in 02/22/21 | 14 | 43 | 43 | 0 | 0 | 0 | 0 | 3 |
[23] † Praekogia cedrosensis Last Modified in 02/22/21 | 31 | 26 | 26 | 0 | 0 | 0 | 0 | 3 |
[24] Kogia breviceps Last Modified in 02/22/21 | 1 | 56 | 56 | 0 | 0 | 0 | 0 | 3 |
[25] † Koristocetus pescei Last Modified in 02/22/21 | 22 | 35 | 35 | 0 | 0 | 0 | 0 | 3 |
[26] † Nanokogia isthmia Last Modified in 02/22/21 | 13 | 44 | 44 | 0 | 0 | 0 | 0 | 3 |
[27] † MUSM 3405 Last Modified in 02/22/21 | 23 | 34 | 34 | 0 | 0 | 0 | 0 | 3 |
[28] Kogia sima Last Modified in 02/22/21 | 1 | 56 | 56 | 0 | 0 | 0 | 0 | 3 |
[29] † Kogia pusilla Last Modified in 02/22/21 | 31 | 26 | 26 | 0 | 0 | 0 | 0 | 3 |
[30] † Scaphokogia totajpe sp nov. Last Modified in 02/22/21 | 15 | 42 | 42 | 0 | 0 | 0 | 0 | 3 |
[31] † LACM156632? Last Modified in 02/22/21 | 15 | 42 | 42 | 0 | 0 | 0 | 0 | 3 |
[32] † Albicetus oxymycterus Last Modified in 02/22/21 | 46 | 11 | 11 | 0 | 0 | 0 | 0 | 3 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 10628 | |
Project overview | 931 | |
Matrix views | 635 | Data matrix (87 views); Matrix landing page (548 views); |
Media views | 1930 | Media search (1638 views); M739131 (292 views); |
Specimen list | 1058 | |
Bibliography | 386 | |
Taxon list | 5106 | |
Views for media list | 579 | |
Documents list | 3 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 83 | |
Project downloads | 80 | |
Matrix downloads | 3 | Data matrix (3 downloads); |