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Priscosiren
Taxonomy
Priscosiren was named by Velez-Juarbe and Domning (2014). Its type is Priscosiren atlantica.
It was assigned to Halitheriinae by Velez-Juarbe and Domning (2014); and to Dugongidae by Voss and Hampe (2017).
It was assigned to Halitheriinae by Velez-Juarbe and Domning (2014); and to Dugongidae by Voss and Hampe (2017).
Species
P. atlantica (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Priscosiren Velez-Juarbe and Domning p. 951 figs. Figures 1-9, Tables 1-4 |
| 2017 | Priscosiren Voss and Hampe p. 341 |
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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. †Priscosiren Velez-Juarbe and Domning 2014
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†Priscosiren atlantica Velez-Juarbe and Domning 2014
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Velez-Juarbe and D. P. Domning 2014 | Halitheriine dugongid of medium body size (2–3 m); differing from other members of the subfamily by dis- playing the following unique combination of plesiomorphies: supraorbital processes of the frontal dorsoventrally thin (≤1 cm) with well-developed, prominent posterolateral corner (c. 36[0]), supraoccipitals that are wider in the dorsal half than the ven- tral half (c. 64[0]), exoccipitals that meet dorsal to the foramen magnum (c. 66[0]), and posttympanic process with a prominent anteroventral process for attachment of m. sternomastoideus (c. 73[0]); synapomorphies: nasals separated in midline (c. 31[1]) (shared with Eosiren imenti, Caribosiren, and all later dugongid taxa), ventral extremity of jugal located directly ventral to or- bit (c. 85[2]) (shared with some Metaxytherium spp., hydro- damalines, and most dugongines), ventral border of mandible strongly concave (c. 122[3]) (shared with Halitherium chris- tolii, Metaxytherium spp., and dugongines), absence of acces- sory mental foramina (c. 123[1]) (shared with Halitherium chris- tolii and all later halitheriines), dorsoventrally broad horizontal ramus of mandible (c. 128[1]) (shared with Halitherium chris- tolii, Metaxytherium spp., and dugongines), and loss of all per- manent premolars (c. 145[2]) (shared with Caribosiren and all later dugongid taxa); and a possible autapomorphy: concave anteroventral surface of jugal. Differs further from the similar species Caribosiren turneri in having lesser rostral deflection (of about 44◦); presence of small incisors (c. 139[0], 140[0]); lower temporal crests; and slightly larger body size. |