New material of scalidophoran worms in Orsten-type preservation from the Cambrian Fortunian Stage of South China

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New material of scalidophoran worms in Orsten-type preservation from the Cambrian Fortunian Stage of South China. / Zhang, Huaqiao; Maas, Andreas; Waloszek, DIeter.

I: Journal of Paleontology, Vol. 92, Nr. 1, 01.01.2018, s. 14-25.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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T1 - New material of scalidophoran worms in Orsten-type preservation from the Cambrian Fortunian Stage of South China

AU - Zhang, Huaqiao

AU - Maas, Andreas

AU - Waloszek, DIeter

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Scalidophoran worms diversified in the Cambrian Fortunian, as indicated by recent reports from this stage, with two described species and two more unnamed forms exclusively from Orsten-type Lagerstätten yielding three-dimensionally phosphatized fossils. Here, we report new material of scalidophoran worms in Orsten-type preservation from the Cambrian Fortunian Xinli section in northern Sichuan Province, South China. At least five forms of scalidophoran worms were recovered from this location, including Eokinorhynchus rarus Zhang et al., 2015 and four unnamed taxa-Forms A, B, C, and D. Co-occurring disassociated spinose small shelly fossils might also be isolated cuticular elements of these early scalidophoran worms. The ontogeny of Eokinorhynchus rarus is revised. Forms A, C, and D are assigned to total-group Scalidophora to indicate their uncertain positions within Scalidophora, while Form B might be a close relative of Eokinorhynchus rarus. The current work highlights the significance of Orsten-type Lagerstätten in uncovering the morphology, ontogeny, and taxonomy of early Scalidophora and Cycloneuralia, made particularly available by the new finds in China.

AB - Scalidophoran worms diversified in the Cambrian Fortunian, as indicated by recent reports from this stage, with two described species and two more unnamed forms exclusively from Orsten-type Lagerstätten yielding three-dimensionally phosphatized fossils. Here, we report new material of scalidophoran worms in Orsten-type preservation from the Cambrian Fortunian Xinli section in northern Sichuan Province, South China. At least five forms of scalidophoran worms were recovered from this location, including Eokinorhynchus rarus Zhang et al., 2015 and four unnamed taxa-Forms A, B, C, and D. Co-occurring disassociated spinose small shelly fossils might also be isolated cuticular elements of these early scalidophoran worms. The ontogeny of Eokinorhynchus rarus is revised. Forms A, C, and D are assigned to total-group Scalidophora to indicate their uncertain positions within Scalidophora, while Form B might be a close relative of Eokinorhynchus rarus. The current work highlights the significance of Orsten-type Lagerstätten in uncovering the morphology, ontogeny, and taxonomy of early Scalidophora and Cycloneuralia, made particularly available by the new finds in China.

U2 - 10.1017/jpa.2017.39

DO - 10.1017/jpa.2017.39

M3 - Article

VL - 92

SP - 14

EP - 25

JO - Journal of Paleontology

T2 - Journal of Paleontology

JF - Journal of Paleontology

SN - 0022-3360

IS - 1

ER -