Phylogenetic and Biogeographic Analysis of Ordovician Homalonotid Trilobites

Congreve, Curtis R.; Lieberman, Bruce S.

doi:10.2174/1874425700801010024

Cited by 14 publications

(8 citation statements)

References 31 publications

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“…Over the last 60 years, several authors have improved our knowledge about the systematics of the homalonotid trilobites (Gill, 1948;Harrington et al, 1959;Pillet, 1961;Saul, 1965Saul, , 1967Tomczykowa, 1975b;Baldis et al, 1976;Thomas, 1977;Chlupáè, 1981;Henry, 1981;Arbizu, 1982;Cooper, 1982;Busch & Swartz, 1985;Wenndorf, 1990;Sandford, 2005;Congreve & Lieberman, 2008). However, despite this considerable body of knowledge, a number of issues mar the study of the Ghilardi, 2004 andBosetti, 2004).…”

Section: Homalonotid Systematicsmentioning

confidence: 99%

“…The paleoecology (e.g., Gill, 1948;Chlupáè, 1981;Busch & Swartz, 1985;Wenndorf, 1990;Whittington, 1993;Sandford, 2005), and stratigraphy/paleobiogeography (Tomczykowa, 1975a(Tomczykowa, , 1975bAlberti, 1979;Henry, 1981;Cooper, 1982;Wenndorf, 1990;Sandford, 2005;Congreve & Lieberman, 2008) of homalonotids is reasonable well known. The vertical distribution and the abundance of the studied homalonotids (Burmeisteria herscheli and B. noticus) is shown in the figure 2.…”

Section: Stratigraphical Distribution Taphonomy and Paleoecologymentioning

confidence: 99%

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Systematics, taphonomy, and paleoecology of homalonotid trilobites (Phacopida) from the Ponta Grossa Formation

Simões¹,

Leme²,

Soares³

2009

RBP

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Homalonotid trilobites (Phacopida) from the Ponta Grossa Formation (Lower Devonian), Paraná State are revised. A total of 156 specimens recovered from rocks that belong to the Jaguariaíva Member (or Sequence B), of the Ponta Grossa Formation cropping out at Ponta Grossa, Tibagi and Jaguariaíva counties, were examined. Data gathered indicate that at least two species are present (Burmeisteria noticus and B. herscheli). B. noticus is a conspicuous species of the Devonian rocks of South Africa (Bokkeveld Group), Argentina (Lipéon Formation), Bolivia (Icla and Bélen Formations), and Brazil (Pimenteiras and Ponta Grossa formations). B. herscheli is common in Devonian strata on the Falkland Islands (Fox Bay Formation), South Africa (Bokkeveld Group), and Bolivia (Icla and Tarija formations), and is a newly recognized member of the trilobite fauna of the Ponta Grossa Formation. Hence, the homalonotid fauna of the Ponta Grossa Formation is not monospecific, as previously assumed. Finally, homalonotids are not randomly distributed throughout the succession of the Ponta Grossa Formation. B. herscheli shows a more restricted bathymetric distribution, preferentially occurring in sandstones and siltstones deposited just at the storm wave base. B. noticus lived and/or were preserved in sedimentary deposits varying from sandy facies, generated just in and/or above the fair weather wave base, and in muddy facies deposited below storm wave base. Despite the differences in the distribution of both species, homalonotid remains are rather abundant in the shallow water facies, deposited jus at or above storm wave base, being potentially important paleoenvironmental (neritic facies) indicators.

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Section: Homalonotid Systematicsmentioning

confidence: 99%

Section: Stratigraphical Distribution Taphonomy and Paleoecologymentioning

confidence: 99%

Systematics, taphonomy, and paleoecology of homalonotid trilobites (Phacopida) from the Ponta Grossa Formation

Simões¹,

Leme²,

Soares³

2009

RBP

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“…The detailed phylogenetic data needed to test these hypotheses are currently limited to Ordovician trilobites. In particular, Congreve and Lieberman () generated a phylogenetic hypothesis (Fig. ) for Ordovician trilobites belonging to the Family Homalonotidae, which contains the Hirnantia taxon ‘ Brongniartella’ (Fig.…”

Section: Testing the Hypothesismentioning

confidence: 99%

“…Phylogeny of O rdovician homalonotid trilobites modified from Congreve and Lieberman (). This analysis resulted in only one most parsimonious tree of 54 steps with a CI of 0.5185 and an RI of 0.7615.…”

Section: Testing the Hypothesismentioning

confidence: 99%

“…The phylogeny of O rdovician homalonotid trilobites, after Congreve and Lieberman () with the taxa replaced with their hypothetical environmental tolerances. Taxa associated with the H irnantia F auna are labelled cold (and identified as H irnantian), while subsequent taxa are assigned cold or warm based upon whether they inhabit a high or low latitude.…”

Section: Testing the Hypothesismentioning

confidence: 99%

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Cladal Turnover: the end‐Ordovician as a large‐scale analogue of species turnover

Congreve

2013

Palaeontology

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Modern studies of individual populations have shown large cyclical shifts in phenotype/genotype that correlate with climatic variations. At the hierarchical level of the species, similar patterns can be observed in the climatically mediated turnover of species (i.e. Vrba's Relay Model). In turn, mass extinction events may have a similar analogous relationship with species turnover, while operating at the clade level. In this paper, such an analogous process is described and named 'the Cladal Turnover Model'. The endOrdovician mass extinction event is used as a test case to investigate the existence of such a phenomenon, with specific focus on the origin and extinction of the Hirnantia fauna. A test is outlined that can be applied to determine whether Cladal Turnover is occurring in the end-Ordovician. An example case study is then performed on the Hirnantia trilobite genus 'Brongniartella'. The results of this test suggest that while the taxon 'Brongniartella' is derived from putatively cold-water high-latitude stock (consistent with the classical definition of Hirnantia taxa), the group does not go extinct at the end-Ordovician event, but instead gives rise to warm-water low-latitude descendants. This result is consistent with the Cladal Turnover Model. The method proposed for testing the Cladal Turnover Model could be applied to look at other times of major evolutionary turnover preserved in the fossil record.

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Palaeobiogeography of the family Nisusiidae (Cambrian rhynchonelliform brachiopods) using the ‘area‐transition count’ method and systematic revision of Korean species

Lee

et al. 2022

Papers in Palaeontology

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Nisusiidae is a rhynchonelliform brachiopod family that was widely distributed in low‐latitude regions during the middle Cambrian (Stage 3 of Series 2 to the Drumian Stage of the Miaolingian Series). Cladistic analysis of 24 nisusiid species including two species from South Korea (Nisusia paucicostellata and Nisusiidae gen. et sp. indet.) demonstrates that the nisusiids consist of two sister clades (Clade 1 and 2) whose common ancestor was derived from a paraphyletic ‘basal’ group. Non‐spinose taxa are all included in Clade 1, while spinose Nisusia species are found throughout the three groups including Clade 1, indicating paraphyly of Nisusia. The optimized ancestral area(s) are assigned to internal nodes of the taxon area cladogram using both the Fitch algorithm and the DIVALIKE+J model of BioGeoBEARS, and then the relationship between cladogenetic area transition types and palaeogeographical areas is examined using the ‘area‐transition count’ method. Of 10 possible cladogenetic area transitions, which are combinations of range contraction (C), expansion (E), switch (S) and no range change (N), six (CC, CE, CN, EN, NN and NS) are observed in the two optimization results. It is proposed that the nisusiids originated in Laurentia as a strongly spinose form and dispersed into high‐latitude peri‐Gondwana during Stage 3 and then strongly diversified into other areas during Stage 4, and that non‐spinose forms evolved later, mainly in Laurentia. The nisusiid palaeobiogeographical pattern is interpreted to reflect distributional range changes that were probably caused by palaeo‐oceanic currents with the aid of island arcs as stepping stones, and pumice, produced by volcanic activity, as the means of dispersal.

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Phylogenetic and Biogeographic Analysis of Ordovician Homalonotid Trilobites

Cited by 14 publications

References 31 publications

Systematics, taphonomy, and paleoecology of homalonotid trilobites (Phacopida) from the Ponta Grossa Formation

Systematics, taphonomy, and paleoecology of homalonotid trilobites (Phacopida) from the Ponta Grossa Formation

Cladal Turnover: the end‐Ordovician as a large‐scale analogue of species turnover

Palaeobiogeography of the family Nisusiidae (Cambrian rhynchonelliform brachiopods) using the ‘area‐transition count’ method and systematic revision of Korean species

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