First evidence of attached juveniles in the solutan echinoderm Pahvanticystis from the middle Cambrian Weeks Formation (Utah, USA)
The fossil record of the Palaeozoic echinoderm class Soluta suggests they originated in the Miaolingian (middle Cam brian) of Laurentia as permanently attached suspension feeders, demonstrating a stepwise shift towards vagility in successive strata. Here, we report a new specimen of Pah v...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Institute of Paleobiology PAS
2025-03-01
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| Series: | Acta Palaeontologica Polonica |
| Online Access: | https://www.app.pan.pl/archive/published/app70/app012282024.pdf |
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| Summary: | The fossil record of the Palaeozoic echinoderm class Soluta
suggests they originated in the Miaolingian (middle Cam
brian) of Laurentia as permanently attached suspension
feeders, demonstrating a stepwise shift towards vagility in
successive strata. Here, we report a new specimen of Pah
vanticystis cf. utahensis associated with three putative juve
niles interpreted as belonging to the same species. We inter
pret this as evidence of facultative attachment in juveniles
of Pahvanticystis, which had not previously been reported
in this taxon, but is known in the earlier genus Castericystis.
Our findings indicate that attachment as a juvenile was
more widespread in solutans than previously thought. |
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| ISSN: | 1732-2421 |