Graptolithina

Tetragraptus headi (Hall, 1858)

Synonymy list
1858     Graptolithus headi — Hall, pp. 161
1865     Graptolithus headi — Billings, pp. 228, fig. 236
1865     Graptolithus headi — Hall, pp. 8, fig. 6:8
1868     Graptolithus (Loganograptus) headi — Hall, pp. 174, fig. 4
1868     Tetragraptus headi — Nicholson, pp. 131
1872     Tetragrapsus headi — Nicholson, pp. 66, fig. 36
1898     Tetragraptus headi — Elles, pp. 486, fig. 11
1902     Tetragraptus headi — Elles et Wood, pp. 59, fig. 5:3a-b
1912     Tetragraptus cf. headi — Hoek, pp. 226, fig. 12:6
1947     Tetragraptus headi (Hall) — Ruedemann, pp. 301, fig. 51:33
Selection of related publications
Obut, A. M. 1960. Correlation of some parts of Estonian Ordovician and Silurian deposits according to graptolites. ENSV TA Geoloogia Instituudi uurimused V, 143-157. Eesti NSV Teaduste Akadeemia Geoloogia Instituudi Uurimused V, pp. 143-157.
References based on distribution