Detailed Nematomorph Worm Fossil from Chengjiang Biota

Name: Nematomorpha; Maotianshania cylindrica

Geological Time: Early Cambrian, (~525 million years ago)

Size: (25.4mm=1 inch): 32 mm long on a 40 mm by 28 mm matrix

Fossil Location: Chengjiang Biota, Quiongzhusi Section, Yu’anshan Member, Heilinpu Formation, Mafang Village, Anning, Kunming , Yunnan Province, China

Code: CJF414

Price: $95.00

Nematomorph Worm Fossil from Chengjiang BiotaDescription: This is an example of the nematomorph Maotianshania cylindrica. The species is known from numerous specimens, many of which have preserved details, with the taxon named after, Maotianshan (Mao Tian Hill), site of the discovery of the Chengjiang Biota by Hou Xian-guang in 1984. The intestine is often preserved as a dark film, indicative of its deposit-feeding lifestyle. The diversity of soft-tissue fossils is astonishing: algae, medusiforms, sponges, priapulids, annelid-like worms, echinoderms, arthropods (including trilobites), hemichordates, chordates, and the first agnathan fish make up just a small fraction of the total. Numerous problematic forms are known as well, some of which may have represented failed attempts at diversity that did not persist to the present day. While the species is known from other Lower Cambrian locations in Yunnan and Guizhou Provinces, it is particularly well known from the Chengjiang Biota. The fine example preserved here in exquisite detail makes this a highly unique specimen of life from 525 million years ago.

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