“Paraceraurus”的意思、由来-开放百科全书

词条

Paraceraurus

释义

Selected species
References

{{Taxobox
| name = Paraceraurus {{Italic title}}
| fossil_range = Ordovician
| image = Cheiruridae - Paraceraurus exsul.JPG
| image_width = 250px
| image_caption = Paraceraurus exsul
| regnum = Animalia
| phylum = Arthropoda
| classis = Trilobita
| ordo = Phacopida
| subordo = Cheirurina
|familia= Cheiruridae
|genus=Paraceraurus
|genus_authority = Männil, 1958 ^[1]
}}Paraceraurus is a genus of trilobites that lived in the Ordovician period (485.4 to 443.4 Ma). Its remains have been found in China, Estonia, Sweden and North America.^[2] These trilobites have a rounded and moderately convex cephalon. Glabella is convex or flattened, with a sub-rectangular outline. Thorax shows eleven segments.^[3]

Selected species

Paraceraurus exsul
Paraceraurus aculeatus
Paraceraurus ingricus
Paraceraurus gladiator
Paraceraurus macrophthalmus
Paraceraurus spinulosus

^[3]

References

1. ^Organism Names
2. ^Paraceraurus in the Paleobiology Database
3. ^¹Fossilstock

Trilobite: Eyewitness to Evolution by Richard Fortey
Trilobites of the families Cheiruridae and Encrinuridae from Estonia.] Geoloogia Instituudi Uurimused [Trud Inst Geol Acad Sci Est SSR] Tallinn, 3 1958: 165-205, 210-212. [Zoological Record Volume 95]
V. Klikushin, A. Evdokimov, A. Pilipyuk. Ordovician Trilobites of the St. Petersburg Region, Russia, 2009.

4 : Cheiruridae|Ordovician trilobites of North America|Ordovician trilobites of Asia|Phacopida genera

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