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Allodelphis
Taxonomy
Allodelphis was named by Wilson (1935). It is not extant. It was considered monophyletic by Uhen et al. (2008), Barnes and Reynolds (2009).
It was assigned to Delphinidae by Wilson (1935), Mitchell and Tedford (1973); to Odontoceti by Muizon (1990); to Platanistoidea by Fordyce and de Muizon (2001); to Platanistidae by Barnes (1977), Carroll (1988), Benton (1993), McKenna and Bell (1997), Uhen et al. (2008); and to Allodelphinidae by Barnes (2006), Barnes and Reynolds (2009), Boersma and Pyenson (2016), Marx et al. (2016), Kimura and Barnes (2016), Godfrey et al. (2017), Berta (2017).
It was assigned to Delphinidae by Wilson (1935), Mitchell and Tedford (1973); to Odontoceti by Muizon (1990); to Platanistoidea by Fordyce and de Muizon (2001); to Platanistidae by Barnes (1977), Carroll (1988), Benton (1993), McKenna and Bell (1997), Uhen et al. (2008); and to Allodelphinidae by Barnes (2006), Barnes and Reynolds (2009), Boersma and Pyenson (2016), Marx et al. (2016), Kimura and Barnes (2016), Godfrey et al. (2017), Berta (2017).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Allodelphis Wilson p. 13 figs. Fig. 1-3 |
| 1973 | Allodelphis Mitchell and Tedford p. 272 |
| 1977 | Allodelphis Barnes p. 325 |
| 1988 | Allodelphis Carroll |
| 1990 | Allodelphis Muizon p. 313 |
| 1993 | Allodelphis Benton p. 762 |
| 1997 | Allodelphis McKenna and Bell p. 383 |
| 2001 | Allodelphis Fordyce and de Muizon p. 178 |
| 2006 | Allodelphis Barnes p. 31 |
| 2008 | Allodelphis Uhen et al. p. 581 |
| 2009 | Allodelphis Barnes and Reynolds |
| 2016 | Allodelphis Boersma and Pyenson p. 12 figs. Figure 10 |
| 2016 | Allodelphis Kimura and Barnes p. 4 |
| 2016 | Allodelphis Marx et al. p. 127 |
| 2017 | Allodelphis Berta p. 162 |
| 2017 | Allodelphis Godfrey et al. figs. Figure 6 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Allodelphis Wilson 1935
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†Allodelphis pratti Wilson 1935
†Allodelphis woodburnei Barnes and Reynolds 2009
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. D. Uhen et al. 2008 | Resembling Argyrocetus joaquinensis in the presence of elongated nasals, but differing from it in the reduced exposure of the frontals on the vertex, the relatively large occipital condyles, and the conformation of the occiput; rostrum elongated; vertex elevated; postero-internal angles of maxillaries rather closely approximated on vertex; nasals long and relatively narrow, premaxillaries narrowed; lambdoidal crests prominent; and occiput flattened (Wilson, 1935). | |
| T. Kimura and L. G. Barnes 2016 | A genus of the family Allodelphinidae differing from Ninjadelphis, new genus, and Zarhinocetus by having cranium with wider dorsal opening of mesorostral canal anterior to dorsal nares, posterior part of rostrum anterior to dorsal nares not depressed, posterior ends of premaxillae less irregular and digitated, posterior ends of premaxillae extending posteriorly beyond level of posterior margins of corresponding nasal bones, nasal bones elevated anteriorly rather than tilting anteroventrally into posterior part of dorsal nares, nasal bones expanded in width anteriorly rather than narrow anteriorly, nasal bones not fused to each other at midline or to underlying frontal bones, instead having margins defined clearly by sutures, nasal bones and dorsal exposures of frontal bones at cranial vertex symmetrical, with mid-line sutures on mid-sagittal plane rather than skewed asymmetrically to left side, right and left halves of nuchal crest symmetrical and having approximately equal widths and curvatures, and nuchal crest nearly straight transversely rather than curved anteriorly near cranial vertex; tympanic bulla with less inflated outer lip, and smaller and more posteriorly directed sigmoid process; atlas vertebra having dorsal transverse process tapered and not expanded dorsoventrally; differing further from Goedertius, new genus, by having posterior ends of premaxillae less irregular and digitated, nasal bones elevated anteriorly rather than tilting anteroventrally into posterior part of dorsal nares, nasal bones expanded in width anteriorly rather than narrow anteriorly; differing further from Ninjadelphis by having cranium with laterally-flaring margin of maxilla anterior to antorbital notch expanded and flaring laterally equally on both right and left sides rather than being smaller on right side, postglenoid process of squamosal oriented transversely and not expanded on posterolateral side of glenoid fossa (articular surface for mandibular condyle facing anteroventrally rather than anteromedially); petrosal with larger cochlear portion, shorter and more robust anterior process, shorter posterior process, articular facet for tympanic bulla oval shaped and furrowed rather than elongate and smooth, articular facet for bulla not divided into two articular surfaces; tympanic bulla with shorter posterior process, and smaller facet for articulation with petrosal; and atlas vertebra with ventral transverse process shorter; differing further from Zarhinocetus by having cranium lacking maxillary tuberosity on lateral edge of maxilla immediately anterior to antorbital notch, lacking supraorbital crest of maxilla on dorsal surface of supraorbital process, mesethmoid bone between dorsal nares rising dorsally above level of margins of nares, supraorbital process of frontal thinner dorsoventrally, temporal crest more prominent and flaring posterolaterally, occipital shield not so high dorsoventrally, external occipital protuberance developed as vertically-oriented crest near apex of occipital shield, occipital condyles smaller; petrosal less robust, with cochlear portion more elongate anteroposteriorly, anterior process more slender, posterior process longer, and facet on posterior process for articulation with bulla larger and not bent laterally; atlas vertebra relatively smaller; humerus relatively smaller, rather than being enlarged and lengthened to approximately 25% of total cranium length; radius and ulna approximately same lengths as humerus. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||
Age range: base of the Chattian to the top of the Aquitanian or 27.30000 to 20.45000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chattian | USA (California) | A. pratti (58148) | |
| Aquitanian | USA (California) | A. woodburnei (100260) |