Fancy shells from Turner Beach, Captiva, on the Gulf Coast of Southwestern Florida

I have been in Sanibel, Florida, for two weeks now, and will be here another week. The weather has been very calm indeed, which is pleasant, but not great for shelling.

I have visited a number of the local beaches, both on-island and off-island.

Turner Beach, at the southern tip of the island of Captiva, across a small bridge from Sanibel, has aways been one of my favorites. I find it to be great for finding rarities, especially the smaller species.

Yesterday in a two-hour visit, I walked northwards along the beach, following a small, very narrow trail of washed-up shells. It looked not at all promising, but here is a list of the rare and overlooked species that I found. Sometimes I knelt down on elbows and knees to search through what looked to me like promising patches of very small shells.

Barbatia domingensis -- one valve

Divalinga quadrisulcata -- one valve

Callucina keenae -- four valves

Americardia keenae -- one valve

Basterotia quadrata -- one valve

I also found one valve of Arcopsis adamsi, but it somehow that valve did not make it home with me, and also, sad to say, I did not photograph it in situ.

And also I am listing two species that are more abundant (not rare) but which are usually overlooked:

Cavalinga trisulcata -- seven valves

Ervilia concentrica more than 25 valves

As a curiosity, I have added in an image of a small but cute colony of bryozoans, Discoporella umbellata.

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Publicado por susanhewitt susanhewitt, 14 de diciembre de 2021

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Almeja de Arca (Barbatia domingensis)

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susanhewitt

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Diciembre 13, 2021 03:09 PM EST

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susanhewitt

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Diciembre 13, 2021 03:23 PM EST

Descripción

I found maybe three valves of this species this beach a few years ago, before I started recording stuff on
iNat.

That discovery is recorded in the Sanibel Shell Museum Shell Guide and is credited to me.

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susanhewitt

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Diciembre 13, 2021 03:29 PM EST

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susanhewitt

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Diciembre 13, 2021 04:10 PM EST

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susanhewitt

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Diciembre 13, 2021 04:43 PM EST

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susanhewitt

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Diciembre 13, 2021 03:19 PM EST

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susanhewitt

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Diciembre 13, 2021 03:21 PM EST

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susanhewitt

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Diciembre 13, 2021 03:23 PM EST

Comentarios

On subsequent visits I was able to find several more valves (six I think) of Arcopsis adamsi.

Publicado por susanhewitt hace 5 meses (Marca)

And in subsequent visits I really found a lot more cool rare small shells, including two valves in very good condition of Basterotia elliptica .

Until now that species was represented in the Bailey Matthews National Shell Museum research collection only by one rather pathetic chipped valve that I found in December of 2017, also on Turner Beach.

Publicado por susanhewitt hace 5 meses (Marca)

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