Cannabaceae

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Prototherium
Temporal range: Middle Eocene–Late Eocene
Mounted P. veronense skeleton
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
Sirenia
Family:
Dugongidae
Subfamily:
†Halitheriinae
Genus:
Prototherium

de Zigno, 1887
Species
  • Prototherium veronense (de Zigno, 1887) (type)
  • Prototherium ausetanum Balaguer & Alba, 2016
  • Prototherium intermedium Bizzotto, 1983

Prototherium is a genus of extinct sirenian related to the dugong. It is known from middle (Bartonian) and upper Eocene deposits in Italy and Spain. Type species is P. veronenses (Zigno, 1887[1])

P. veronense skull

Three species are now included in the genus, but their phylogenetic relations are not resolved and possibly one of them Prototherium intermedium Bizzotto 1983[2] must be excluded. In the same way, relations between Prototherium and other genus are confused and need revision. A third species was described in Spain in 2016, P.ausetanum[3].

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See also

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References

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  1. ^ (de) Zigno, Achille. "Quelques observations sur les siréniens fossiles". Bull.Soc. Geol. France. 15: 728–732.
  2. ^ Bizzotto, Bruno. "Prototherium intermedium n. sp. (Sirenia) dell'EoceneSuperiore di Possagno e proposta di revisione sistematica del taxon Eotheroides Palmer, 1899". Mem. Ist. Geol. Mineral. Univ. Padova. 36: 95–116.
  3. ^ Balaguer, J. & Alba, D. (2016). "A new dugong species (Sirenia, Dugongidae) from the Eocene of Catalonia (NE Iberian Peninsula)". Comptes Rendus Palevol. 15 (5): 489–500. Bibcode:2016CRPal..15..489B. doi:10.1016/j.crpv.2015.10.002.


source: https://en.wikipedia.org/wiki/Prototherium

One thought on “Cannabaceae”

  1. Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
    View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction

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