Paropsonema
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Paropsonema is an eldonioid known from the Devonian of upstate New York and (if P. mirabile is a species of Paropsonema rather than Discophyllum) the Silurian of southern Australia. It is the latest-surviving known member of the Eldonioidea and Cambroernida.[1]
A specimen described in 2018 may represent an additional species, but has been tentatively assigned to P. cryptohya;[3] it represents the youngest described paropsonemid.[4]
The species Discophyllum mirabile has been thought to be closer to Paropsonema than to the sole previously-described species of Discophyllum, D. peltata.[5] As a result, sources treat it as Paropsonema mirabile.[1] Conversely, at least one worker has treated P. cryptophya as a member of Discophyllum, D. cryptophya, although this has not been followed by later authors.[6] Regardless, Paropsonema and Discophyllum are grouped together informally as "paropsonemids."[6][1]
References
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- ^ a b c d Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found.
- ^ Page Module:Citation/CS1/styles.css has no content."†Discophyllum mirabile Chapman 1926". The Paleobiology Database. Retrieved 29 December 2024.
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Works cited
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- Page Module:Citation/CS1/styles.css has no content.Hagadorn, James W.; Allmon, Warren D. (August 2018). "Paleobiology of a three-dimensionally preserved paropsonemid from the Devonian of New York". Palaeogeography, Palaeoclimatology, Palaeoecology. 513: 208–214. doi:10.1016/j.palaeo.2018.08.007.
- Page Module:Citation/CS1/styles.css has no content.Schroeder, Natalie I.; Paterson, John R.; Brock, Glenn A. (2018). "Eldonioids with associated trace fossils from the lower Cambrian Emu Bay Shale Konservat-Lagerstätte of South Australia". Journal of Paleontology. 92 (1): 80–86. Bibcode:2018JPal...92...80S. doi:10.1017/jpa.2018.6. ISSN 0022-3360. S2CID 197586878.
- Page Module:Citation/CS1/styles.css has no content.Zhu, Mao-Yan; Zhao, Yuan-Long; Chen, Jun-Yuan (March–April 2002). "Revision of the Cambrian discoidal animals Stellostomites eumorphus and Pararotadiscus guizhouensis from South China". Geobios. 35 (2): 165–185. Bibcode:2002Geobi..35..165Z. doi:10.1016/S0016-6995(02)00025-6. ISSN 0016-6995.
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