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Geological Society, London, Special Publications; 1967; v. 2; p. 601-611;
DOI: 10.1144/GSL.SP.1967.002.01.41
© 1967 Geological Society of London

Invertebrata

Chapter 23 Chordata: Hemichordata (including Graptolithina), Pogonophora, Urochordata and Cephalochordata

C. H. Holland, PH.D. F.G.S., R. B. Rickards, PH.D. F.G.S., D. Skevington, PH.D., I. Strachan, PH.D. F.G.S. & L. B. H. Tarlo, D.SC. PH.D. F.L.S. F.A.Z. F.G.S.

Department of Geology, Trinity College, Dublin 2, Ireland
Department of Geology, Trinity College, Dublin 2, Ireland
Department of Geology, University College, Gower Street, London W 1
Department of Geology, The University, Birmingham 15
Department of Geology, The University, Reading, Berkshire

Introduction. The classification of the Chordata is that employed by Tarlo (1960). The reasons for including the Hemichordata and Pogonophora within the Chordata, rather than giving them the rank of independent phyla as in the Zoological Record, are discussed in detail in a more recent account (Tarlo 1967).

[L.B.H.T.]

Phylum CHORDATA

Subphylum HEMICHORDATA

Class PTEROBRANCHIA Lankester 1878

Order RHABDOPLEURIDA Fowler 1892

First, Ord Llvirn: Rhabdopleuroides expectatus Kozlowski, Vaginoceras Lst, Poznan, Poland (Kozlowski 1961).

Extant.

Order CEPHALODISCIDA Fowler 1892

First, Ord Tremad: Eocephalodiscus polonicus Kozlowski, Glauconitic Sst, Wysoczki, S. Poland (Kozlowski 1949).

Extant. [L.B.H.T.]

Class GRAPTOLITHINA Bronn 1846

Order DENDROIDEA Nicholson 1872

Family DENDROGRAPTIDAE Roemer in Frech 1897

First, Camb U. Camb: Callograptus antiquus Ruedemann, Dendrograptus edwardsi major Ruedemann, and D. hallianus moneymakeri Ruedemann, Nolichucky Sh, Tennessee (Ruedemann 1947); other approximately coeval species of Dictyonema, Callograptus, Dendrograptus and Aspidograptus from: U. Wilberns Fm, Texas (Decker 1945); Deadwood Fm, S. Dakota; Trempeleau Fm, Gaspé (Eau Claire) Quebec (Ruedemann 1933, 1947); and Potsdam Fm, New York (Hall 1865). A dendroid graptolite, undescribed, but possibly Dendrograptus, has been obtained from the M.Camb, P. davidis Z, Comley, England.

Last, Carb Namur Dictyonema sp. (undescribed, mentioned Bulman 1955 in Treatise V p. 18) Eumorphoceras Z (E1) Yorkshire, England.

Constituent genera: As in Treatise V but excluding reticulograptus Wiman which is a tuboid.

Family ANISOGRAPTIDAE Bulman 1950

First, Ord Tremad; undescribed forms referable to Bryograptus mentioned Tjernvik (1958), D. flabelliforme desmograptoides Z., Flagabro, Scania.

Last, Ord Lldeil-Carad (L): Calyxdendrum graptoloides Kozlowski, Poznan and Warsaw, Poland (Kozlowski 1960).

Constituent genera: Anisograptus Ruedemann, Adelograptus Bulman, Byrograptus Lapworth, Clonograptus Hall and Nicholson, Radiograptus Bulman, Staurograptus Emmons, Triograptus Monsen, Kiaerograptus Spjeldnaes 1963, Calyxdendrum Kozlowski 1960.

Family INOCAULIDAE Reudemann 1947

...

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