The bivalved arthropods Isoxys and Tuzoia with soft‐part preservation from the Lower Cambrian Emu Bay Shale Lagerstätte (Kangaroo Island, Australia)

2009/11/01 by Diego C. García‐Bellido, John R. Paterson, Gregory D. Edgecombe +3 · 5 citations
Earth and Planetary Sciences · #Marine Biology and Ecology Research #Marine and coastal plant biology #Paleontology and Stratigraphy of Fossils

paper · doi:10.1111/j.1475-4983.2009.00914.x

openalex publication_date 2009/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Abstract: Abundant material from a new quarry excavated in the lower Cambrian Emu Bay Shale (Kangaroo Island, South Australia) and, particularly, the preservation of soft‐bodied features previously unknown from this Burgess Shale‐type locality, permit the revision of two bivalved arthropod taxa described in the late 1970s, Isoxys communis and Tuzoia australis . The collections have also produced fossils belonging to two new species: Isoxys glaessneri and Tuzoia sp. Among the soft parts preserved in these taxa are stalked eyes, digestive structures and cephalic and trunk appendages, rivalling in quality and quantity those described from better‐known Lagerstätten, notably the lower Cambrian Chengjiang fauna of China and the middle Cambrian Burgess Shale of Canada.

Citations

• Geology and Geomorphology
• A review of the Cambrian biostratigraphy of South Australia
• Digestive system and feeding mode in Cambrian naraoiid arthropods
• Leanchoilia guts and the interpretation of three-dimensional structures in Burgess Shale-type fossils

Cited by

• Vertically migrating Isoxys and the early Cambrian biological pump
• Arthropod visual predators in the early pelagic ecosystem: evidence from the Burgess Shale and Chengjiang biotas
• Eyes and vision in the Chengjiang arthropod Isoxys indicating adaptation to habitat
• The problematic Cambrian arthropod Tuzoia and the origin of mandibulates revisited
• A new bivalved arthropod from the Cambrian (Stage 3) Qingjiang biota expands the palaeogeographical distribution and increases the diversity of Tuzoiidae
• Soft-Part Preservation in two Species of the ArthropodIsoxysfrom the Middle Cambrian Burgess Shale of British Columbia, Canada
• Isoxys [wikipedia]