ScholarLens Back to search
2013•Unpublished venueRequires access

The trilobite 'Cirriticeps gen.' nov. (Proetida, Tropidocoryphidae) from the Silurian of New South Wales

David J. Holloway

Open publisher page 2 citations

Abstract

The new tropidocoryphid genus Cirriticeps is represented in the Silurian of New South Wales by two species - C. auranticum sp. nov., the type species, from the Wenlock to Ludlow of the Orange district, and C. rattei (Etheridge and Mitchell, 1891) from the upper Ludlow of the Yass Basin. The genus probably arose from a species of Decoroproetus and was ancestral to Tropidocoryphe, which is known from the Lower and Middle Devonian of Europe and North Africa. In both Cirriticeps and Tropidocoryphe the anterior and lateral cephalic borders are very broad, poorly differentiated from the genal field, and carry an epiborder furrow The structure of the borders has been misinterpreted previously in Tropidocoryphe, the epiborder furrow having been regarded as the border furrow, and the inner part of the border as part of the genal field.

About this research paper

What this paper is about

The new tropidocoryphid genus Cirriticeps is represented in the Silurian of New South Wales by two species - C. auranticum sp. nov., the type species, from the Wenlock to Ludlow of the Orange district, and C. rattei (Etheridge and Mitchell, 1891) from the upper Ludlow of the Yass Basin. The genus probably arose from a species of Decoroproetus and was ancestral to Tropidocoryphe, which is known from the Lower and Middle Devonian of Europe and North Africa. In both Cirriticeps and Tropidocoryphe the anterior and lateral cephalic borders are very broad, poorly differentiated from the genal field, and carry an epiborder furrow The structure of the borders has been misinterpreted previously in Tropidocoryphe, the epiborder furrow having been regarded as the border furrow, and the inner part of the border as part of the genal field.

Why it matters

OpenAlex reports 2 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

The new tropidocoryphid genus Cirriticeps is represented in the Silurian of New South Wales by two species - C. auranticum sp. nov., the type species, from the Wenlock to Ludlow of the Orange district, and C. rattei (Etheridge and Mitchell, 1891) from the upper Ludlow of the Yass Basin. The genus probably arose from a species of Decoroproetus and was ancestral to Tropidocoryphe, which is known from the Lower and Middle Devonian of Europe and North Africa. In both Cirriticeps and Tropidocoryphe the anterior and lateral cephalic borders are very broad, poorly differentiated from the genal field, and carry an epiborder furrow The structure of the borders has been misinterpreted previously in Tropidocoryphe, the epiborder furrow having been regarded as the border furrow, and the inner part of the border as part of the genal field.

Key concepts: Trilobite, Paleontology, Devonian, Genus, Type species, Structural basin, Geology, Taxonomy (biology)

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
The trilobite 'Cirriticeps gen.' nov. (Proetida, Tropidocoryphidae) from the Silurian of New South Wales — Research Paper | ScholarLens