Pelmatozoa

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Pelmatozoa was once a clade of Phylum Echinodermata. It included stalked and sedentary echinoderms. The main class of Pelmatozoa were the Crinoidea which includes sea lily and feather star.

Contents

Pelmetazoa is no longer a classification of Echinodermata. [1]

Pelmetazoa
Temporal range: 535–0  Ma
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Clade: Ambulacraria
Phylum: Echinodermata
Groups included
Crinozoa
Blastozoa

Pelmatozoa s.l. ( sensu lato ) or Crinozoa s.l., were in some systems a large taxon, sometimes considered a subphylum of echinoderms.

The majority of Pelmatozoa s.l. consisted of the extinct taxon Blastozoa.

Pelmatozoa s.s. ( sensu stricto ) sometimes only include Crinoidea.

Characteristics

The body of these ancient Echinodermates is anchored to the bottom through a stem analogous to the epistome of Phoronidea. They're sessile, only rarely capable of movement. Fossils date back at least to Cambrium so they've been on Earth for over 500 million years.

In the past, they were a numerous group of marine fauna and many groups belong to lead fossils, however today only one smaller class remains extant.

System (Phylogeny)

Pelmatozoa s.l. = Crinozoa s.l.:


Formerly even Carpoidea/Homalozoa belonged to Pelmatozoa.

Sources for this chapter: [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49]

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<span class="mw-page-title-main">Echinoderm</span> Exclusively marine phylum of animals with generally 5-point radial symmetry

An echinoderm is any deuterostomal animal of the phylum Echinodermata, which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as larvae, as adults echinoderms are recognisable by their usually five-pointed radial symmetry, and are found on the sea bed at every ocean depth from the intertidal zone to the abyssal zone. The phylum contains about 7,600 living species, making it the second-largest group of deuterostomes after the chordates, as well as the largest marine-only phylum. The first definitive echinoderms appeared near the start of the Cambrian.

<span class="mw-page-title-main">Crinoid</span> Class of echinoderms

Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are members of the largest crinoid order, Comatulida. Crinoids are echinoderms in the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. They live in both shallow water and in depths over 9,000 metres (30,000 ft).

<span class="mw-page-title-main">Edrioasteroidea</span> Extinct class of marine invertebrates

Edrioasteroidea is an extinct class of echinoderms. The living animal would have resembled a pentamerously symmetrical disc or cushion. They were obligate encrusters and attached themselves to inorganic or biologic hard substrates. A 507 million years old species, Totiglobus spencensis, is actually the first known echinoderm adapted to live on a hard surface after the soft microbial mats that covered the seafloor were destroyed in the Cambrian substrate revolution.

<span class="mw-page-title-main">Stylophora</span> Extinct group of marine invertebrates

The stylophorans are an extinct, possibly polyphyletic group allied to the Paleozoic Era echinoderms, comprising the prehistoric cornutes and mitrates. It is synonymous with the subphylum Calcichordata. Their unusual appearances have led to a variety of very different reconstructions of their anatomy, how they lived, and their relationships to other organisms.

<span class="mw-page-title-main">Blastozoa</span> Subphylum of marine invertebrates

Blastozoa is a subphylum of extinct echinoderms characterized by the presence of specialized respiratory structures and brachiole plates used for feeding. It ranged from the Cambrian to the Permian.

<span class="mw-page-title-main">Crinozoa</span> Subphylum of marine invertebrates

Crinozoa is a subphylum of mostly sessile echinoderms, of which the crinoids, or sea lilies and feather stars, are the only extant members. Crinozoans have an extremely extensive fossil history.

<span class="mw-page-title-main">Taxonomy of commonly fossilised invertebrates</span>

The taxonomy of commonly fossilized invertebrates combines both traditional and modern paleozoological terminology. This article compiles various invertebrate taxa in the fossil record, ranging from protists to arthropods. This includes groups that are significant in paleontological contexts, abundant in the fossil record, or have a high proportion of extinct species. Special notations are explained below:

<span class="mw-page-title-main">Eleutherozoa</span> Proposed group of marine invertebrates

Eleutherozoa is a subphylum of echinoderms. They are mobile animals with the mouth directed towards the substrate. They usually have a madreporite, tube feet, and moveable spines of some sort. It includes all living echinoderms except for crinoids. The monophyly of Eleutherozoa has been proven sufficiently well to be considered "uncontroversial."

<span class="mw-page-title-main">Eocrinoidea</span> Class of echinoderms

The Eocrinoidea are an extinct class of echinoderms that lived between the Early Cambrian and Late Silurian periods. They are the earliest known group of stalked, arm-bearing echinoderms, and were the most common echinoderms during the Cambrian.

<span class="mw-page-title-main">Deuterostome</span> Superphylum of bilateral animals

Deuterostomes are bilaterian animals of the superphylum Deuterostomia, typically characterized by their anus forming before the mouth during embryonic development. Deuterostomia is further divided into four phyla: Chordata, Echinodermata, Hemichordata, and the extinct Vetulicolia known from Cambrian fossils. The extinct clade Cambroernida is thought to be a member of Deuterostomia.

<i>Echmatocrinus</i> Extinct genus of marine invertebrates

Echmatocrinus is a Cambrian animal which resembles a crinoid or an octocoral. Its exact taxonomy is still a subject of debate. It is known only from the Burgess shale. Around 20 specimens of Echmatocrinus are known; these comprise < 0.02% of the community.

<i>Camptostroma</i> Extinct genus of marine invertebrates

Camptostroma roddyi is an extinct echinoderm from the Bonnia-Olenellus Zone of the Early Cambrian Kinzers Formation near York and Lancaster, Southeastern Pennsylvania. It is the only known species in the genus Camptostroma, as other species referred to this genus "do not appear to be cogeneric."

<span class="mw-page-title-main">Homalozoa</span> Extinct historic group of marine invertebrates

Homalozoa is an obsolete extinct subphylum of Paleozoic era echinoderms, prehistoric marine invertebrates. They are also referred to as carpoids.

<span class="mw-page-title-main">Fezouata Formation</span> Geological formation in Morocco

The Fezouata Formation or Fezouata Shale is a geological formation in Morocco which dates to the Early Ordovician. It was deposited in a marine environment, and is known for its exceptionally preserved fossils, filling an important preservational window beyond the earlier and more common Cambrian Burgess shale-type deposits. The fauna of this geological unit is often described as the Fezouata biota, and the particular strata within the formation which exhibit exceptional preservation are generally termed the Fezouata Lagerstätte.

<span class="mw-page-title-main">Verulam Formation</span>

The Verulam Formation is a geologic formation and Lagerstätte in Ontario, Canada. It preserves fossils dating back to the Katian stage of the Ordovician period, or Shermanian to Chatfieldian in the regional stratigraphy.

Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 2015.

Diploporita is an extinct class of blastozoan that ranged from the Ordovician to the Devonian. These echinoderms are identified by a specialized respiratory structure, called diplopores. Diplopores are a double pore system that sit within a depression on a single thecal (body) plate; each plate can contain numerous diplopore pairs.

<span class="mw-page-title-main">Soluta (echinoderm)</span> Extinct clade of echinoderms

Soluta is an extinct class of echinoderms that lived from the Middle Cambrian to the Early Devonian. The class is also known by its junior synonym Homoiostelea. Soluta is one of the four "carpoid" classes, alongside Ctenocystoidea, Cincta, and Stylophora, which made up the obsolete subphylum Homalozoa. Solutes were asymmetric animals with a stereom skeleton and two appendages, an arm extending anteriorly and a posterior appendage called a homoiostele.

<span class="mw-page-title-main">Ctenocystoidea</span> Extinct clade of marine invertebrates

Ctenocystoidea is an extinct clade of echinoderms, which lived during the Cambrian and Ordovician periods. Unlike other echinoderms, ctenocystoids had bilateral symmetry, or were only very slightly asymmetrical. They are believed to be one of the earliest-diverging branches of echinoderms, with their bilateral symmetry a trait shared with other deuterostomes. Ctenocystoids were once classified in the taxon Homalozoa, also known as Carpoidea, alongside cinctans, solutes, and stylophorans. Homalozoa is now recognized as a polyphyletic group of echinoderms without radial symmetry. Ctenocystoids were geographically widespread during the Middle Cambrian, with one species surviving into the Late Ordovician.

References

  1. Fell, Howard B. "Pelmatozoa". AccessScience, McGraw Hill Education. doi:10.1036/1097-8542.495400 . Retrieved 27 September 2014. Formerly treated as a formal unit of classification with the rank of subphylum, pelmatozoans are now realized to be a heterogeneous assemblage of forms with similar habits but dissimilar ancestry...
  2. Sałamatin, Rusłan & Kaczmarek, Adam. (2022). Astroblastocystis nom. nov. - a new replacement name for Blastocystis Jaekel, 1918 (Echinodermata, Parablastoidea). Annals of Parasitology. 68. 195-196. 10.17420/ap6801.425.
  3. Mark A.S. McMenamin (2016). Dynamic Paleontology (Using Quantification and Other Tools to Decipher the History of Life). Springer. p. 10. ISBN   978-3-319-22777-1.
  4. In: Šaling, S. Veľký slovník cudzích slov. 2000. S. 226
  5. Topper, Timothy P.; Guo, Junfeng; Clausen, Sébastien; Skovsted, Christian B.; Zhang, Zhifei (2019-03-25). "A stem group echinoderm from the basal Cambrian of China and the origins of Ambulacraria". Nature Communications. 10 (1): 1366.
  6. Zamora, S., Wright, D.F., Mooi, R. et al. Re-evaluating the phylogenetic position of the enigmatic early Cambrian deuterostome Yanjiahella. Nat Commun 11, 1286 (2020). https://doi.org/10.1038/s41467-020-14920-x
  7. Zamora, S., Sumrall, C. D., Zhu, X.-J., & LeFebvre, B. (2016). A new stemmed echinoderm from the Furongian of China and the origin of Glyptocystitida (Blastozoa, Echinodermata). Geological Magazine, 154(03), 465–475. doi:10.1017/s001675681600011x
  8. Echinodermata
  9. Paul, C.R.C. 2021. New insights into the origin and relationships of blastoid echinoderms. Acta Palaeontologica Polonica 66 (1): 41–62.
  10. Jennifer E. Bauer, Sarah L. Sheffield, Johnny A. Waters, and Colin D. Sumrall. Echinoderm model systems, homology, and phylogenetic inference: Comment and reply to Paul (2021). Acta Palaeontologica Polonica 67 (2), 2022: 465-468
  11. Guensburg, T., Sprinkle, J., Mooi, R., Lefebvre, B., David, B., Roux, M., & Derstler, K. (2020). Athenacrinus n. gen. and other early echinoderm taxa inform crinoid origin and arm evolution. Journal of Paleontology, 94(2), 311-333. doi:10.1017/jpa.2019.87 (najmä Fig. 13)
  12. Dzik, J. & Orlowski, S. 1993. The Late Cambrian eocrinoid Cambrocrinus. Acta Palaeontologica Polonica 38, 1 /2, 2 1-34
  13. Aaron W. Hunter, Javier Ortega-Hernández. A primitive starfish ancestor from the Early Ordovician of Morocco reveals the origin of crown group Echinodermata bioRxiv 216101
  14. Paturi, Felix R.; Strauch, Friedrich; Herholz, Michael (c. 1996). Kronika Zeme (2 ed.). Bratislava: Fortuna Print. pp. 77, 531. ISBN   80-7153-114-6.
  15. "GEOL 331/BSCI 333 Principles of Paleontology - Fall Semester 2022-Deuterostomia II: Crown group echinoderms". geol.umd.edu. Retrieved 13 February 2023.
  16. Brands, S.J. (ed.), 2022. Pelmatozoa. In Systema Naturae 2000. The Taxonomicon, 4 Aug 2022. Universal Taxonomic Services, Zwaag, The Netherlands. . Access date: 14 Feb. 2023
  17. "Les Crinoïdes". fossile.fr. Retrieved 14 February 2023.
  18. "Fossiilid.info". fossiilid.info. Retrieved 14 February 2023.
  19. "The Paleobiology Database". paleobiodb.org. Retrieved 14 February 2023.
  20. Sepkoski, J. J. A Compendium of Fossil Marine Animal Families. 2nd edition. 1992. S. 84 a nasl.
  21. Sepkoski, J. J. Jr.. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560. 2002 269 a nasl.
  22. M.Alan Kazlev. "Echinodermata". palaeos.com. Retrieved 14 February 2023.
  23. Sheffield, S. L., & Sumrall, C. D. (2019). The phylogeny of the Diploporita: a polyphyletic assemblage of blastozoan echinoderms. Journal of Paleontology, 1–13. doi:10.1017/jpa.2019.2
  24. SHEFFIELD, S. L. The Homology and Phylogeny of the Diploporita (Blastozoa: Echinodermata). PhD diss., University of Tennessee, 2017. (najmä S. 90 a 150)
  25. Tirjaková, E. et al. Systém eukaryotických jednobunkovcov a živočíchov. Prírodovedecká fakulta UK Bratislava. 2015
  26. "Variety of Life". taxondiversity.fieldofscience.com. Retrieved 12 February 2023. (vrátane podstránok)
  27. Benton, Michael J.; Harper, David A. T. (2020). Introduction to Paleobiology and the Fossil Record. John Wiley & Sons. p. 447. ISBN   978-1-119-27285-4.
  28. Nardin, E., Lefebvre, B., Fatka, O., Nohejlová, M., Kašička, L., Šinágl, M., & Szabad, M. (2017). Evolutionary implications of a new transitional blastozoan echinoderm from the middle Cambrian of the Czech Republic. Journal of Paleontology, 91(4), 672-684.
  29. Florkin, Marcel (2012) [1969]. Chemical Zoology V3 (Echinnodermata, Nematoda, And Acanthocephala). Elsevier. pp. 28–29. ISBN   978-0-323-14311-0.
  30. Samuel, Ondrej (2000). Geologický slovník - zoopaleontológia. Bratislava: Štátny geologický ústav Dionýza Štúra. pp. 13–14. ISBN   80-88974-24-0.
  31. Mooi, Rich. (2001). Not all written in stone: Interdisciplinary syntheses in echinoderm paleontology. Canadian Journal of Zoology-revue Canadienne De Zoologie 79. 1209-1231. 10.1139/cjz-79-7-1209.
  32. Breimer, A., and Ubaghs, G., 1974, A critical comment on the classification of the pelmatozoan echinoderms I. and II: Koninklijke Nederlandes Akademie van Wetenschappen, Proceedings, Ser. B, v. 77, no. 5, str. 398-417.
  33. Souza-Lima, W. et al. Capítulo23 Eqinodermas. In: Cavalho, Ismar de Souza. Paleontologia. 2010
  34. Regnéll, G. Non-Crinoid Pelmatozoa from the Paleozoic of Sweden. 1945 S. 14
  35. Gekker, R. F., Orlov, J. A. Osnovy paleontologii....Tom 10. Moskva: Izdateľstvo Akademii nauk SSSR. 1964. S. 23 a nasl.
  36. Mayr, Ernst (2015). Principles of Systematic Zoology. Scientific Publishers. p. 246. ISBN   978-93-88148-59-7.
  37. Paskerova, G. G. Echinodermata (kurz) (prístup 14. 2. 2023)
  38. Echinoderm - Classification. In: "Encyclopædia Britannica". Encyclopædia Britannica. 20 July 1998. Retrieved 14 February 2023.
  39. Blackwelder, R. E. Classification of the Animal kingdom. 1963 S. 60-62
  40. Bulletins of American Paleontology. Paleontological Research Institution. 2011. pp. 7, 30. ISBN   978-0-87710-493-3.
  41. Prothero, Donald R. (2013). Bringing Fossils to Life (An Introduction to Paleobiology). Columbia University Press. pp. 437–438. ISBN   978-0-231-15892-3.
  42. Lefebre, B. et al. Ordovician echinoderms from the Tabas and Damghan regions, Iran: palaeobiogeographical implications. In: Bull. Soc. Géol. Fr., 2005, t. 176, n o 3, pp. 231-242. S. 236
  43. Lehmann, Ulrich (2014). Paläontologisches Wörterbuch. Springer-Verlag. p. 271. ISBN   978-3-662-45606-4.
  44. K.S.W Campbell; M.F. Day (2020) [1987]. Rates of Evolution. Routledge. pp. 75–77. ISBN   978-1-00-005387-6.
  45. T.W. Broadhead, J.A. Waters (eds.) , Echinoderms, notes for a short course. University of Tenn- essee Studies in Geology 3. 1980. S. 126
  46. Guensburg, T., Sprinkle, J., Mooi, R., & Lefebvre, B. (2021). Evolutionary significance of the blastozoan Eumorphocystis and its pseudo-arms. Journal of Paleontology, 95(2), 327-343. doi:10.1017/jpa.2020.84
  47. Kammer TW, Sumrall CD, Zamora S, Ausich WI, Deline B. Oral region homologies in paleozoic crinoids and other plesiomorphic pentaradial echinoderms. PLoS One. 2013 Nov 11;8(11):e77989. doi: 10.1371/journal.pone.0077989. PMID: 24244284; PMCID: PMC3823914.
  48. Makhlouf, Yamouna & B., Lefebvre & Nardin, Elise & Nedjari, A. & Régnault, Serge & Ferhi, Mohamed. (2014). Stratigraphic and Palaeogeographical Distribution of the Ordovician Eocrinoid Ascocystites Barrande 1887 (Echinodermata, Blastozoa). 10.1007/978-3-319-04364-7_199.
  49. A.W. Hunter; J.J. Álvaro; Lefebvre, B.; Roy, P. Van; Zamora, S. (2022). The Great Ordovician Biodiversification Event: Insights from the Tafilalt Biota, Morocco. Geological Society of London. p. 387. ISBN   978-1-78620-407-3.