30142 - Top Rare 0.45 Inch Psilocephalina Cambrian Trilobite - China
30142 - Top Rare 0.45 Inch Psilocephalina Cambrian Trilobite - China 30142 - Top Rare 0.45 Inch Psilocephalina Cambrian Trilobite - China 30142 - Top Rare 0.45 Inch Psilocephalina Cambrian Trilobite - China 30142 - Top Rare 0.45 Inch Psilocephalina Cambrian Trilobite - China

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30142 - Top Rare 0.45 Inch Psilocephalina Cambrian Trilobite - China

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† Psilocephalina (Hsu, 1948)
Cambrian (~500 Million Years)
Guangxi Province, China
Sandu formation
11.5 mm   •    in
103 g   •    oz
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Psilocephalina, Hsu 1948 (trilobite)
Trilobita - Asaphida - Asaphidae

PaleoDB taxon number: 20158

Parent taxon: Asaphidae according to P. A. Jell and J. M. Adrain 2002

See also Sepkoski 2002

Sister taxa: Anataphrus, Araiocaris, Asaphellus, Asaphinae, Atopasaphus, Aulacoparia, Australopyge, Basilicus, Bellefontia, Birmanites, Bohemopyge, Brachyaspis, Branisaspis, Burminresia, Ectenaspis, Emanuelaspis, Eoasaphus, Eoisotelus, Fuyunia, Gerasaphes, Griphasaphus, Guohongjunia, Hemigyraspis, Homotelus, Hunnebergia, Isabelinia, Isotelinae, Kayseraspis, Klabavia, Kobayashia, Lachnostoma, Liomegalaspides, Lisogorites, Lycophron, Megalaspidella, Merlinia, Metaptychopyge, Mioptychopyge, Nahannia, Nerudaspis, Nileoides, Ningkianites, Niobella, Niobides, Niobina, Niobinae, Nobiliasaphus, Norasaphus, Norinia, Ogmasaphus, Ogygiinae, Ogyginus, Ogygiocarella, Ogygiocaris, Ogygites, Ogygitoides, Onchometopus, Parabellefontia, Paramegalaspis, Paratamdaspis, Penchiopsis, Plectasaphus, Presbynileus, Priceaspis, Promegalaspidinae, Proscharyia, Protopresbynileus, Protoptychopyge, Pseudasaphus, Pseudoasaphus, Pseudogriphasaphus, Pseudogygites, Ptychopyge, Ptychopyginae, Ptyocephalus, Sanbernardaspis, Schizophorus, Stegnopsis, Stenorhachis, Suriaspis, Thysanopyge, Trigonocerca, Trigonocercella, Vogdesia, Xenostegium, Zhenganites, Zuninaspis

Subtaxa: none

Ecology: fast-moving low-level epifaunal deposit feeder

Environments: shallow subtidal (6 collections), marine (3), deep subtidal shelf (2), sand shoal (2), carbonate (1), peritidal (1), foreshore (1)

Age range: 478.6 to 449.5 Ma


• Ordovician of Australia (5 collections), China (17), Iran (2)

• Arenig of China (20)

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