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Acastella spinosa

Trilobita - Phacopida - Acastidae

Taxonomy
Phacops (Acaste) downingiae spinosus was named by Salter (1864) [Phacops (Acaste) Downingiae var δ spinosus].

It was recombined as Acaste (Acastella) spinosa by Richter and Richter (1954); it was recombined as Acastella spinosa by Shergold (1967).

Sister species lacking formal opinion data
A. crenulata, A. prima

Synonymy list
YearName and author
1864Phacops (Acaste) downingiae spinosus Salter p. 27 fig. 7
1954Acaste (Acastella) spinosa Richter and Richter pp. 73 - 75 figs. pl. 11. f. 4
1967Acastella spinosa Shergold pp. 173 - 184 figs. pl. 24 f. 1-8; pl. 25 f. 6-12

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderPhacopinaStruve 1959
superfamilyAcastoidea
familyAcastidaeDelo 1935
genusAcastellaReed 1925
speciesspinosa(Salter 1864)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Acastella spinosa Salter 1864
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivoresubo
Vision: well-developedf
Created: 2009-12-15 22:42:55
Modified: 2009-12-16 00:42:55
Source: f = family, subo = suborder, c = class
References: Fortey and Owens 1999, Whittington et al. 1997, Aberhan et al. 2004

Age range: base of the Ludfordian to the top of the Pragian or 425.60000 to 407.60000 Ma

Collections (13 total)


Time interval Ma Country or state Original ID and collection number
Ludlow427.4 - 423.0United Kingdom (England) Acastella spinosa (479)
Ludfordian425.6 - 423.0Poland (Lysogory Region) Acastella spinosa (229366)
Ludfordian - Pridoli425.6 - 419.2Poland Acastella spinosa (229386)
Pridoli423.0 - 419.2Poland Acastella spinosa (13883 23040)
Pridoli423.0 - 419.2Ukraine Acastella spinosa (13874)
Pridoli - Helderbergian423.0 - 393.3Morocco Acaste spinosa (27401 27403)
Pridoli - Helderbergian423.0 - 393.3Algeria Acaste spinosa (27210 27456)
Lochkovian419.2 - 410.8Algeria Acaste spinosa (27171 27473)
Pragian410.8 - 407.6Algeria Acaste spinosa (27172)