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Protophites christoli

Order

Suborder

Superfamily

Family

Subfamily

Genus

Ammonoidea

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[Beta] View Protophites sp. occurences on the world map.

Stage

Zone

Subzone

Horizon

Oxfordian

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Continent

Country

County

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The whole specimen is 19 mm long including the rostrum.

Protophites is a dwarf genus.
Small involute species. The last whorl shows two elbows (a round one followed by a pinched one) and narrow flanks. The thin ribs start above a flat periumbilical zone and they generally divide into two ribs at mid-flank. The umbilicus has a rectangular shape with rounded angles. The rostrum is preceded by a large flat constriction.

This particular specimen shows the typical rostrum, and a less commonly seen complete aperture (photo n°3). On one side there is what resembles to a small lappet (photo n°2). There is the imprint of its symmetrical on the other side of the aperture.

2009 . BERT D.

Discussion, evolution and new interpretation of the Tornquistes LEMOINE, 1910 (Pachyceratidae, Ammonitina) with the exemple of the Vertebrale Subzone sample (Middle oxfordian) of southeastern France - Revue de Paléobiologie, Genève (décembre 2009) 28 (2) : 471-489

p. 483, see 'IV. Is Protophites EBRAY, 1860 a Pachyceratidae?'

2003 . BERT D.

Etude de Protophites vannii sp.nov. (Ammonoidea), Sous-zone à Cardioceras vertebrale, Oxfordien moyen, et évolution du genre Protophites EBRAY, 1860 - Riviéra Scientifique, 87, 69-84

pl. 2, fig. 3a-b, 4a-b and 5

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Created by Guillaume on 28/12/2016 - 21:30:13
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