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Adkinsella

Wells, 1933, p. 39

Type Species

Adkinsella edwardsensis Wells, 1933, p. 39, pl. 1, figs 1-4, pl. 3, figs 9-11; Original Designation Wells, 1933

Type Specimen: Holotype; ; Verified; Dry Preserved

Type Locality: Upper Albian (Fredericksburg Group) of Texas, USA.

The holotype is housed under BEG-34090 at TMM, Austin, TX. An additional specimen of the original collection is the paratype UT-21343.

Classification

Synonyms

Diagnosis

Solitary, ?turbinate to subcylindrical; ?rootlets present; septa compact; one slightly longer septum present in juvenile stage, becoming less dominant in later ontogenetical stages; lateral flanks of septa smooth or have very fine granulae which sometimes appear to be aligned in wavy ridges that are longitudinal (distally) to horizontal (towards axial part of corallite); columella absent but trabecular extensions of axial edges of septa might form a pseudo-columella; lonsdaleoid septa and apophysal septa present, mainly occurring in lower part of corallum; large vesicular dissepiments sparse, mainly restricted to peripheral part of corallum; wall compact, shows similarities to marginotheca; epitheca s.l. present; developments of wall internally thickened by stereome irregularly present.

Comparisons

Material described from the Middle Jurassic of India (Patcham Fm, Jumara Dome) as Lophosmilia tenuicaulata (Gregory, 1900) (see Pandey and Fursich, 1993, pl. 6, figs. 2a-b, and 4a-5b) seems to show close affinities to the genus Adkinsella.

Remarks

The drawing of the holotype of the type species by Wells (1956) most likely does not correspond to the specimen regarding the growth form of its basal part but appears to show non-corallite debris attached to the corallum. As can be seen in what appears to be the juvenile part of the corallum on the backside of the type specimen (BEG-34090), there are neither visible rootlets (as assumed by Wells) nor does the corallum shape appear to be turbinate.----Also see Remarks under Hexasmiliopsis.

Distribution

  • Southern Europe; Early Cretaceous
  • North America; Early Cretaceous

This page has been in preparation since 07-Jul-2010 17:40

This version was contributed by Rosemarie Baron-Szabo on 10-Feb-2018 16:33.

Page authors are: Rosemarie Baron-Szabo. Please contact the editor if you would like to contribute to the diagnosis of this taxon.

The editor is: Rosemarie Baron-Szabo


Adkinsella edwardsensis Wells, 1933, holotype
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Adkinsella edwardsensis Wells, 1933, holotype
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Adkinsella edwardsensis Wells, 1933, juvenile part of holotype
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Adkinsella edwardsensis Wells, 1933, holotype
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