Microgobius crocatus Birdsong, 1968
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publication ID |
https://doi.org/10.1186/s13358-023-00302-5 |
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persistent identifier |
https://treatment.plazi.org/id/492D87AA-FF96-FFD9-018C-FEF063E3FBD8 |
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treatment provided by |
Felipe |
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scientific name |
Microgobius crocatus Birdsong, 1968 |
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Microgobius crocatus Birdsong, 1968 View in CoL
Figure 28j–o View Fig
Material 20 specimens Tortonian, Pacific Panama, Darien : 17 specimens Tuira FM, PPP 1137 (figured specimens NMB P15668-70 View Materials ) ; 3 specimens Yaviza FM , 1 specimen PPP 1609 , 2 specimens PPP 1528 .
Discussion Te otoliths of M. crocatus are relatively unremarkable and are best recognized by the regularly curved, high, and evenly crenulated or undulating dorsal rim that distinguishes them from otoliths of M. carri and M. chocorum . Microgobius crocatus occurs today in mangrove environments in the tropical East Pacific (Birsdong, 1981). Its fossil occurrence is rare, concentrated in a single location in the Tortonian of Darien, Río Tuquesa (PPP 1137), which has been described as “clayey siltstone and bioclastic and lithic sandstone, rich in bivalves, especially Pecten ” ( Coates et al., 2004). Pecten clams are not specific or even common in mangrove environments, and the cause for the singular abundance of M. crocatus in that location is therefore unknown. Moreover, M. crocatus represents the earliest extant goby species identified by otoliths in tropical America.
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Department of Nature, Fujian Province Museum |
| NMB |
Naturhistorishes Museum |
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