Biology:Paropsonema
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;[2] it represents the youngest described paropsonemid.[3]
The species Discophyllum mirabile has been thought to be closer to Paropsonema than to the sole previously-described species of Discophyllum, D. peltata.[4] 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.[5] Regardless, Paropsonema and Discophyllum are grouped together informally as "paropsonemids."[5][1]
References
- ↑ 1.0 1.1 1.2 Schroeder, Paterson & Brock 2018, pp. 80–81
- ↑ Hagadorn & Allmon 2018, p. 213
- ↑ Hagadorn & Allmon 2018, p. 208
- ↑ Zhu, Zhao & Chen 2002, p. 180
- ↑ 5.0 5.1 Hagadorn & Allmon 2018, p. 212
Works cited
- 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.
- 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" (in en). Journal of Paleontology 92 (1): 80–86. doi:10.1017/jpa.2018.6. ISSN 0022-3360. Bibcode: 2018JPal...92...80S. https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/eldonioids-with-associated-trace-fossils-from-the-lower-cambrian-emu-bay-shale-konservatlagerstatte-of-south-australia/05F449A7147B8DB89E74F26E2A443E88.
- 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" (in en). Geobios 35 (2): 165–185. doi:10.1016/S0016-6995(02)00025-6. ISSN 0016-6995. Bibcode: 2002Geobi..35..165Z. https://www.sciencedirect.com/science/article/pii/S0016699502000256.
Wikidata ☰ Q7139453 entry
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