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Huaridelphis

From Wikipedia, the free encyclopedia
Extinct genus of mammals

Huaridelphis
Temporal range:Early Miocene (Deseadan-Friasian)
~23.03–15.97 Ma
Scientific classificationEdit this classification
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Artiodactyla
Infraorder:Cetacea
Family:Squalodelphinidae
Genus:Huaridelphis
Lambertet al. 2014
Species:
H. raimondii
Binomial name
Huaridelphis raimondii
Lambertet al. 2014

Huaridelphis is anextinctgenus ofriver dolphins from theEarly Miocene (Deseadan toFriasian in theSALMA classification).[1] Thetype species isH. raimondii, found in theChilcatay Formation of thePisco Basin.

Etymology

[edit]

The genus name is derived from the name of theHuari people, an ancient culture fromPeru, and from theLatin word for "dolphin";delphis. The specific name was chosen in honor ofAntonio Raimondi, an Italian geographer and the first person to discover fossilized whale remains in Peru.[1]

Description

[edit]

H. raimondii was a relatively small squalodelphinid, with abizygomatic breadth of 207 millimetres (8.1 in) and acondylobasal length of 494 millimetres (19.4 in). Therostrum, which was only slightlydorsoventrally flattened, and made up only 67% of the condylobasal length, considerably less than most squalodelphinids. Theantorbital notches were V-shaped and asymmetrical, with the right notch further back on the head than the left one. The species had 28-30 teeth per top row, withalveoli ranging in diameter between 3.7 and 5.5 millimetres (0.15 and 0.22 in). Teeth ranged from 3.35 to 6.4 millimetres (0.132 to 0.252 in) high at thecrown. Ribs measured around 260 millimetres (10 in).[1]

Discovery

[edit]

Fossils ofH. raimondii have been recovered from theChilcatay Formation in Ullujaya and Zamaca, in theIca Region of Peru.[1]

Habitat

[edit]

The specimens date from theEarly Miocene. Specimens were found along with fossils ofIsurus desori andCarcharocles chubutensis (two species of sharks), as well as those ofbaleen whales,Teleostei, andsea turtles. Injuries, probably from sharks, were observed on at least two of the fossils.[1]

References

[edit]
  1. ^abcdeLambert, Olivier; Bianucci, Giovanni; Urbina, Mario (9 September 2014)."Huaridelphis raimondii, a new early Miocene Squalodelphinidae (Cetacea, Odontoceti) from the Chilcatay Formation, Peru".Journal of Vertebrate Paleontology.34 (5):987–1004.Bibcode:2014JVPal..34..987L.doi:10.1080/02724634.2014.858050.
Odontocete genera
Xenorophidae
Waipatiidae
Squalodontidae
Squaloziphiidae
Eurhinodelphinidae
Crown-Odontoceti
    • see below↓
Physeteroidea
Kogiidae
Physeteridae
Allodelphinidae?
Squalodelphinidae?
Platanistidae
Berardiinae
Ziphiinae
Hyperoodontinae
Delphinida
    • see below↓
Kentriodontidae
Lipotidae
Iniidae
Pontoporiidae
Monodontidae
Phocoenidae
Lissodelphininae
Delphininae
Globicephalinae
Huaridelphis


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