Project 4620: O. Lambert, G. Bianucci, M. Urbina. 2014. Huaridelphis raimondii, a new early Miocene Squalodelphinidae (Cetacea, Odontoceti) from the Chilcatay Formation, Peru. Journal of Vertebrate Paleontology. 34 (5):987-1004.
Abstract
The fossil record of odontocetes (toothed cetaceans) is relatively scarce during the Oligocene and early Miocene compared with later in the Miocene and Pliocene; most of the odontocete families from these epochs are known by a limited number of species and specimens. Among those, Squalodelphinidae is a family of small- to medium-sized platanistoids with single-rooted teeth, which until now has included only four genera based on diagnostic material, from the early Miocene of Europe, Argentina, and North America. Recent field work in the Pisco-Ica desert, southern coast of Peru, has resulted in the discovery of several marine vertebrate-rich localities in various levels of the late Oligocene–early Miocene Chilcatay Formation. Based on three specimens from Ullujaya and Zamaca, including two well-preserved skulls with periotics, we describe a new squalodelphinid genus and species, Huaridelphis raimondii. This new species increases the early Miocene diversity of the family and is also its smallest known member. It further differs from other squalodelphinids by its thin antorbital process of the frontal, abruptly tapering rostrum, and higher tooth count. A more fragmentary skull, from Zamaca, is referred to Squalodelphinidae aff. H. raimondii. This skull provides information on the morphology of the tympanic, malleus, and incus, currently unknown in H. raimondii. Focusing on platanistoids with single-rooted teeth, our phylogenetic analysis suggests that Squalodelphinidae are monophyletic and confirms the sister-group relationship between the latter and Platanistidae. The relationships within Squalodelphinidae are not fully resolved, but H. raimondii might be one of the earliest diverging taxa.Read the article »
Article DOI: 10.1080/02724634.2014.858050
Project DOI: 10.7934/P4620, http://dx.doi.org/10.7934/P4620
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 546 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 37 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 79 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:37/0 |
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MorphoBank Project 4620
MorphoBank Project 4620
- Creation Date:
03 April 2023 - Publication Date:
03 April 2023 - Matrix downloads: 4
Authors' Institutions
- Royal Belgian Institute of Natural Sciences
- University of Pisa
- Museo de Historia Natural de Lima
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 19 | 1 | 1 | 37 | 0 | 0 | 546 (546, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29228' (19 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Huaridelphis Taxon name last Modified on 04/03/23 | 6 | 31 | 31 | 0 | 0 | 0 | 0 | 1 |
[2] † MUSM603 Taxon name last Modified on 04/03/23 | 13 | 24 | 24 | 0 | 0 | 0 | 0 | 1 |
[3] † Notocetus Taxon name last Modified on 04/03/23 | 0 | 37 | 37 | 0 | 0 | 0 | 0 | 1 |
[4] † Squalodelphis Taxon name last Modified on 04/03/23 | 5 | 32 | 32 | 0 | 0 | 0 | 0 | 1 |
[5] † Medocinia Taxon name last Modified on 04/03/23 | 20 | 17 | 17 | 0 | 0 | 0 | 0 | 1 |
[6] † USNM475596 Taxon name last Modified on 04/03/23 | 22 | 15 | 15 | 0 | 0 | 0 | 0 | 1 |
[7] † Phocageneus Taxon name last Modified on 04/03/23 | 22 | 15 | 15 | 0 | 0 | 0 | 0 | 1 |
[8] Platanista Taxon name last Modified on 04/03/23 | 0 | 37 | 37 | 0 | 0 | 0 | 0 | 1 |
[9] † MUSM1611 Taxon name last Modified on 04/03/23 | 30 | 7 | 7 | 0 | 0 | 0 | 0 | 1 |
[10] † Zarchachis Taxon name last Modified on 04/03/23 | 2 | 35 | 35 | 0 | 0 | 0 | 0 | 1 |
[11] † Pomatodelphis Taxon name last Modified on 04/03/23 | 2 | 35 | 35 | 0 | 0 | 0 | 0 | 1 |
[12] † Eurhinodelphis Taxon name last Modified on 04/03/23 | 3 | 34 | 34 | 0 | 0 | 0 | 0 | 1 |
[13] † Xiphiacetus Taxon name last Modified on 04/03/23 | 1 | 38 | 36 | 0 | 0 | 0 | 0 | 1 |
[14] † Ziphiodelphis Taxon name last Modified on 04/03/23 | 2 | 35 | 35 | 0 | 0 | 0 | 0 | 1 |
[15] † Waipatia Taxon name last Modified on 04/03/23 | 2 | 35 | 35 | 0 | 0 | 0 | 0 | 1 |
[16] † Squalodon Taxon name last Modified on 04/03/23 | 2 | 35 | 35 | 0 | 0 | 0 | 0 | 1 |
[17] † Zygorhiza Taxon name last Modified on 04/03/23 | 0 | 37 | 37 | 0 | 0 | 0 | 0 | 1 |
[18] † Allodelphis Taxon name last Modified on 04/03/23 | 17 | 20 | 20 | 0 | 0 | 0 | 0 | 1 |
[19] † Zarhinocetus Taxon name last Modified on 04/03/23 | 10 | 27 | 27 | 0 | 0 | 0 | 0 | 1 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 5 | |
Project downloads | 1 | |
Matrix downloads | 4 | Reconstructed data matrix (4 downloads); |