Attribution of the taxon name Echinoidea to Schumacher, 1817

Stokes, Robert B.; Kroh, Andreas

doi:10.11646/zootaxa.5182.2.3

Cited by 5 publications

(2 citation statements)

References 4 publications

(4 reference statements)

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“…(following Kroh 2020; Stokes and Kroh 2022) Class Echinoidea Schumacher, 1817 Infraclass Carinacea Kroh and Smith 2010 Family Orthopsidae Duncan, 1889 Genus Orthopsis Cotteau, 1864 Orthopsis metliliae sp. nov.…”

Section: Systematic Palaeontology (Nils Schlüter)mentioning

confidence: 99%

Coniacian (Late Cretaceous) echinoids from the southern Tethyan shelf (NE Algeria) with remarks on their palaeobiology and palaeobiogeography

Schlüter,

Slami,

Benyoucef

et al. 2024

Preprint

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Thirteen echinoid taxa from Coniacian marl-limestone alternations in three sections south and east of Djebel Metlili, on the southwestern margin of the Aures Mountains in northeastern Algeria, are described: Rachiosoma rectilineatum, Phymosoma tamarinense, Phymosoma cf. mansour, Gomphechinus meslei, Coenholectypus serialis, Coenholectypus subcrassus, Parapygus coquandi, Petalobrissus trigonopygus, Petalobrissus rimula, Hemiaster sp., and Mecaster fourneli. Two taxa are newly described herein, Orthopsis metliliae sp. nov. and a new genus and species referred to the family Phymosomatoidae is erected here, Triboporus luluatus gen et sp. nov. A large amount of well-labeled material, comprising 579 specimens, was collected, with the fauna being dominated by the spatangoid Mecaster fourneli. The fauna exhibits typical characteristics of the Tethyan realm at the genus level; however, at the species level, most taxa are restricted to Algeria, with some also found in adjacent countries such as Tunisia and Egypt. The biostratigraphic framework relies on ammonites and inoceramids, indicating a lower to middle Coniacian age.

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Section: Systematic Palaeontology (Nils Schlüter)mentioning

confidence: 99%

Coniacian (Late Cretaceous) echinoids from the southern Tethyan shelf (NE Algeria) with remarks on their palaeobiology and palaeobiogeography

Schlüter,

Slami,

Benyoucef

et al. 2024

Preprint

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“…Classification follows Kroh (2020). Stokes and Kroh (2022) describe the changed attribution of Echinoidea to Schumacher (1817). As the morphological description of Evechinus australiae is based on juvenile specimens, and due to the fact that many echinoids show allometric growth (e.g.…”

Section: Systematicsmentioning

confidence: 99%

Hidden in plain sight: Tripneustes kermadecensis (Echinodermata: Echinoidea) is a junior synonym of the eastern Australian sea urchin Evechinus australiae described in 1878

McLaren,

Bronstein,

Kroh

et al. 2023

Invertebr. Syst.

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Accurate taxonomy and descriptions of species are key to understanding biodiversity. The echinoid genus Tripneustes is an ecologically and commercially important taxon that includes the tropical Tripneustes gratilla gratilla and the recently described T. kermadecensis from Australia and New Zealand. While examining the Australian Museum collections to clarify the distributions of these two species in eastern Australia we found potential senior type material for T. kermadecensis. These specimens from Sydney Harbour were originally described in 1878 as Evechinus australiae by Tenison-Woods but neither illustrated nor redescribed in any subsequent report. We undertook molecular and morphological analysis of these specimens to determine whether T. kermadecensis and E. australiae represent two distinct taxa or not. This included micro-computed tomography, quantification of test traits and molecular genetic analysis. The COI sequence and morphology of Evechinus australiae matched that of Tripneustes kermadecensis. As such, T. kermadecensis is a junior synonym of Evechinus australiae. The correct designation of this taxon is therefore Tripneustes australiae (Tenison-Woods, 1878).ZooBank: urn:lsid:zoobank.org:pub:9B9E685C‐9C1C‐4645‐A799‐D97969BAA033

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A paedomorphic dwarf species, Gauthieria pumilio sp. nov. (Echinoidea: Phymosomatidae), from the Campanian (Late Cretaceous) of Hannover, Germany

Schlüter

2024

PalZ

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A new phymosomatoid species, Gauthieria pumilio sp. nov., from lower Campanian (Late Cretaceous) deposits in the vicinity of Hannover, Germany, is described. This species is very close in its overall appearance (i.e. tuberculation and ambulacral plating pattern) to a few other species: Gauthieria radiata and the juvenile stages of the Santonian Gauthieria spatulifera and the Maastrichtian Gauthieria princeps, with which Gauthieria pumilio sp. nov. is accordingly closely related. However, it deviates from its relatives by a significantly smaller test diameter. Accordingly it is deviating from the general increase in size during the evolutionary lineage leading from the Turonian G. radiata via G. spatulifera to the Maastrichtian G. princeps. This lineage exemplified Cope's Rule through increasing test size. However, G. pumilio sp. nov. challenges this pattern with its dwarfing phenomenon, exhibiting a test diameter < 18 mm. It shares the ambulacral plating pattern with G. radiata and the juvenile stages of G. spatulifera and G. princeps, providing further insights into the genus's evolutionary history.

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Attribution of the taxon name Echinoidea to Schumacher, 1817

Cited by 5 publications

References 4 publications

Coniacian (Late Cretaceous) echinoids from the southern Tethyan shelf (NE Algeria) with remarks on their palaeobiology and palaeobiogeography

Coniacian (Late Cretaceous) echinoids from the southern Tethyan shelf (NE Algeria) with remarks on their palaeobiology and palaeobiogeography

Hidden in plain sight: Tripneustes kermadecensis (Echinodermata: Echinoidea) is a junior synonym of the eastern Australian sea urchin Evechinus australiae described in 1878

A paedomorphic dwarf species, Gauthieria pumilio sp. nov. (Echinoidea: Phymosomatidae), from the Campanian (Late Cretaceous) of Hannover, Germany

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