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Synonymy list
YearName and author
2011Osteostracomorphii Long p. 241

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phylumChordataHaeckel 1847

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.

No diagnoses are available
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilep
Created: 2017-04-17 15:11:50
Modified: 2017-04-17 15:11:50
Source: subp = subphylum, p = phylum
References: Kiessling 2004, Carroll 1988

Age range: base of the Homerian to the top of the Pragian or 430.50000 to 407.60000 Ma

Collections (20 total)

Time interval Ma Country or state Original ID and collection number
Llandovery - Wenlock443.4 - 427.4United Kingdom (Scotland) Birkenia sp. (26889)
Wenlock - Ludlow433.4 - 423.0United Kingdom (Scotland) Birkenia sp., Lasanius sp. (26906)
Homerian430.5 - 427.4Sweden Oeselaspis pustulata, Saaremaaspis mickwitzi (179988 179989) Saaremaaspis mickwitzi (179987)
Homerian - Gorstian430.5 - 425.6United Kingdom (Scotland) Hemicyclaspis sp. (26907)
Ludlow427.4 - 423.0United Kingdom (Scotland) Birkenia sp., Lasanius sp. (26896)
Rootsikula426.2 - 422.9Estonia Cephalaspidoformes indet. (26922) Oeselaspis pustulata, Saaremaaspis mickwitzi, Witaaspis schrenckii (13824) Saaremaaspis mickwitzi, Witaaspis schrenckii (13823)
Pridoli423.0 - 419.2Canada (Nunavut) Hemicyclaspis murchisoni (90324)
Pridoli423.0 - 419.2United Kingdom (England) Hemicyclaspis sp. (26915) Thyestes sp., Hemicyclaspis sp. (26917)
Pridoli - Helderberg423.0 - 391.9Russian Federation Tannuaspis levenkoi (24785)
Paadla422.9 - 419.2Estonia Cephalaspidoformes indet. (26925) Oeselaspis pustulata, Procephalaspis oeselensis, Witaaspis schrenckii (13826)
Paadla422.9 - 419.2Estonia (Saaremaa) Oeselaspis pustulata, Procephalaspis oeselensis, Witaaspis schrenkii (195601)
Lochkovian419.2 - 410.8United Kingdom (England) Benneviaspis salopiensis, Kiaeraspis sp. (90352)
Lochkovian - Pragian419.2 - 407.6Ukraine Cephalaspis kozlowskii (23447)
Pragian410.8 - 407.6Ukraine Cephalaspis bucovinensis (90348)